{"id":3630,"date":"2022-11-05T23:15:00","date_gmt":"2022-11-05T23:15:00","guid":{"rendered":"https:\/\/open-boat-projects.org\/?page_id=3630"},"modified":"2023-03-25T11:08:22","modified_gmt":"2023-03-25T11:08:22","slug":"hardwarebasis-avnav-openplotter","status":"publish","type":"page","link":"https:\/\/open-boat-projects.org\/en\/hardwarebasis-avnav-openplotter\/","title":{"rendered":"Hardware basis for AVnav and OpenPlotter"},"content":{"rendered":"<p><a href=\"https:\/\/open-boat-projects.org\/en\/wichtige-hinweise\/\" target=\"_blank\" rel=\"noopener\"><em><strong>First of all, a few important notes that you should definitely pay attention to.<\/strong><\/em><\/a><\/p>\n<h2>Raspberry Pi<\/h2>\n<p>The main hardware base for AVnav and OpenPlotter is the <a href=\"https:\/\/www.raspberrypi.com\/products\/raspberry-pi-4-model-b\/\" target=\"_blank\" rel=\"noopener\">Raspberry Pi<\/a>. It is a small computer in credit card format. It is available in several variants, although we are only concentrating on the Raspberry Pi 4B here. Of the older models, only the Raspberry Pi 3B is still interesting. Older models should no longer be used.<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone wp-image-2609 size-full\" src=\"https:\/\/open-boat-projects.org\/wp-content\/uploads\/2022\/01\/raspberry-pi-4b.png\" alt=\"\" width=\"583\" height=\"340\" srcset=\"https:\/\/open-boat-projects.org\/wp-content\/uploads\/2022\/01\/raspberry-pi-4b.png 583w, https:\/\/open-boat-projects.org\/wp-content\/uploads\/2022\/01\/raspberry-pi-4b-300x175.png 300w, https:\/\/open-boat-projects.org\/wp-content\/uploads\/2022\/01\/raspberry-pi-4b-18x10.png 18w\" sizes=\"auto, (max-width: 583px) 100vw, 583px\" \/><\/p>\n<p>Fig. Raspberry Pi 4B (Raspberry Fondation) 5\u20267W<\/p>\n<h3>CPU and memory<\/h3>\n<ul>\n<li>Raspberry Pi 4B, 4GB, Quad Core 1.3GHz<\/li>\n<li>SD card up to 32GB (Linux with server application and additional programs)<\/li>\n<\/ul>\n<h3>interfaces<\/h3>\n<p>The Raspi 4B serves as a central processing unit and provides a variety of interfaces to the outside world:<\/p>\n<ul>\n<li>SD card slot (for operating system and applications)<\/li>\n<li>RJ45 Ethernet 1Gbit\/s<\/li>\n<li>2 x USB 2.0<\/li>\n<li>2 x USB 3.0<\/li>\n<li>WiFi 802.11 bgn 2.4GHz \/ 5GHz<\/li>\n<li>Bluetooth 4.1<\/li>\n<li>2x HDMI<\/li>\n<li>1x audio output<\/li>\n<li>1x camera connection (via ribbon cable)<\/li>\n<li>1x display connection (via ribbon cable)<\/li>\n<li>40 pin GPIO header (for hardware extensions and sensors)<\/li>\n<\/ul>\n<p>With 4 processors and 4 or 8 GB RAM, the Raspi is fast enough for server applications and has enough power reserves. In addition, depending on the load, the Raspi consumes between 5...7W of electrical power and is therefore very frugal. The processor can be passively cooled and is therefore silent. The Raspi is supplied with 5V via a USB-C cable with a corresponding power supply unit. Special DC\/DC converters that convert the 12V into 5V are suitable for boat operation. You should make sure that the power pack can deliver enough current of approx. 3.5A, since a lot of current is required in short-term load peaks.<\/p>\n<h2>Hardware base extensions for the Raspberry Pi<\/h2>\n<p>Various components can be used as hardware base extensions that add further functionality to the Raspberry Pi. These include ports for various marine bus systems as well as bus systems for sensor extensions. Depending on the requirements, you can choose between different hardware extensions and thus implement different tasks. The table below shows sensible hardware combinations on which AVnav or OpenPlotter can be used.<\/p>\n<table style=\"border-collapse: collapse; width: 100%; height: 240px;\">\n<tbody>\n<tr style=\"height: 24px; background-color: #aaaaaa;\">\n<td style=\"width: 15.0073%; height: 24px;\"><span style=\"font-size: 10pt;\"><strong>computer system<\/strong><\/span><\/td>\n<td style=\"width: 11.2821%; text-align: center; height: 24px;\"><span style=\"font-size: 10pt;\"><strong>extension<\/strong><\/span><\/td>\n<td style=\"width: 7.1275%; text-align: center; height: 24px;\"><span style=\"font-size: 10pt;\"><strong>NMEA2000 port<\/strong><\/span><\/td>\n<td style=\"width: 7.34237%; text-align: center; height: 24px;\"><span style=\"font-size: 10pt;\"><strong>NMEA0183 port<\/strong><\/span><\/td>\n<td style=\"width: 8.05875%; text-align: center; height: 24px;\"><span style=\"font-size: 10pt;\"><strong>I2C port<\/strong><\/span><\/td>\n<td style=\"width: 7.98706%; text-align: center; height: 24px;\"><span style=\"font-size: 10pt;\"><strong>1Wire port<\/strong><\/span><\/td>\n<td style=\"width: 4.48602%; text-align: center; height: 24px;\"><span style=\"font-size: 10pt;\"><strong>Power supply<\/strong><\/span><\/td>\n<td style=\"width: 4.48602%; text-align: center;\"><span style=\"font-size: 10pt;\"><strong>documentation<br \/>\n<\/strong><\/span><\/td>\n<td style=\"width: 19.3052%; text-align: center; height: 24px;\"><span style=\"font-size: 10pt;\"><strong>comment<\/strong><\/span><\/td>\n<\/tr>\n<tr>\n<td style=\"width: 15.0073%;\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone wp-image-4557\" src=\"https:\/\/open-boat-projects.org\/wp-content\/uploads\/2023\/03\/Waveshare_Mini_Base_Board_C_2-300x216.png\" alt=\"\" width=\"170\" height=\"122\" srcset=\"https:\/\/open-boat-projects.org\/wp-content\/uploads\/2023\/03\/Waveshare_Mini_Base_Board_C_2-300x216.png 300w, https:\/\/open-boat-projects.org\/wp-content\/uploads\/2023\/03\/Waveshare_Mini_Base_Board_C_2-18x12.png 18w, https:\/\/open-boat-projects.org\/wp-content\/uploads\/2023\/03\/Waveshare_Mini_Base_Board_C_2.png 744w\" sizes=\"auto, (max-width: 170px) 100vw, 170px\" \/><\/p>\n<p><span style=\"font-size: 10pt;\"><a href=\"https:\/\/www.waveshare.com\/product\/raspberry-pi\/boards-kits\/compute-module-4-cat\/cm4-io-base-c.htm\" target=\"_blank\" rel=\"noopener\">Waveshare Mini Base Board (C)<\/a> for Raspberry PI CM4 module<br \/>\n<\/span><\/td>\n<td style=\"width: 11.2821%; text-align: center;\"><span style=\"font-size: 10pt;\">without<\/span><\/td>\n<td style=\"width: 7.1275%; text-align: center;\"><span style=\"font-size: 10pt;\">\u2013<br \/>\n<\/span><\/td>\n<td style=\"width: 7.34237%; text-align: center;\"><span style=\"font-size: 10pt;\">\u2013<br \/>\n<\/span><\/td>\n<td style=\"width: 8.05875%; text-align: center;\"><span style=\"font-size: 10pt;\">1x<br \/>\n<\/span><\/td>\n<td style=\"width: 7.98706%; text-align: center;\"><span style=\"font-size: 10pt;\">1x<br \/>\n<\/span><\/td>\n<td style=\"width: 4.48602%; text-align: center;\"><span style=\"font-size: 10pt;\">5V charger USB-C<br \/>\n<\/span><\/td>\n<td style=\"width: 4.48602%; text-align: center;\"><\/td>\n<td style=\"width: 19.3052%;\"><span style=\"font-size: 10pt;\">Alternative to the Raspberry Pi 4B, <\/span><span style=\"font-size: 10pt;\">SSD M.2 card, <\/span><span style=\"font-size: 10pt;\">Real-time clock on board, connections placed differently<br \/>\n<\/span><\/td>\n<\/tr>\n<tr style=\"height: 24px;\">\n<td style=\"width: 15.0073%; height: 24px;\"><span style=\"font-size: 10pt;\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone wp-image-3637\" src=\"https:\/\/open-boat-projects.org\/wp-content\/uploads\/2022\/11\/raspberry-pi-4-b-8gb-ram-300x196.jpg\" alt=\"\" width=\"170\" height=\"111\" srcset=\"https:\/\/open-boat-projects.org\/wp-content\/uploads\/2022\/11\/raspberry-pi-4-b-8gb-ram-300x196.jpg 300w, https:\/\/open-boat-projects.org\/wp-content\/uploads\/2022\/11\/raspberry-pi-4-b-8gb-ram-18x12.jpg 18w, https:\/\/open-boat-projects.org\/wp-content\/uploads\/2022\/11\/raspberry-pi-4-b-8gb-ram.jpg 600w\" sizes=\"auto, (max-width: 170px) 100vw, 170px\" \/><\/span><\/p>\n<p><span style=\"font-size: 10pt;\">Raspberry Pi 4B<\/span><\/td>\n<td style=\"width: 11.2821%; text-align: center; height: 24px;\"><span style=\"font-size: 10pt;\">without<\/span><\/td>\n<td style=\"width: 7.1275%; text-align: center; height: 24px;\"><span style=\"font-size: 10pt;\">\u2013<\/span><\/td>\n<td style=\"width: 7.34237%; text-align: center; height: 24px;\"><span style=\"font-size: 10pt;\">\u2013<\/span><\/td>\n<td style=\"width: 8.05875%; text-align: center; height: 24px;\"><span style=\"font-size: 10pt;\">1x<\/span><\/td>\n<td style=\"width: 7.98706%; text-align: center; height: 24px;\"><span style=\"font-size: 10pt;\">1x<\/span><\/td>\n<td style=\"width: 4.48602%; text-align: center; height: 24px;\"><span style=\"font-size: 10pt;\">5V power supply<\/span><\/td>\n<td style=\"width: 4.48602%; text-align: center;\"><\/td>\n<td style=\"width: 19.3052%; height: 24px;\"><span style=\"font-size: 10pt;\">Well usable as an entry-level solution with USB extensions<\/span><\/td>\n<\/tr>\n<tr style=\"height: 24px;\">\n<td style=\"width: 15.0073%; height: 24px;\"><span style=\"font-size: 10pt;\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone wp-image-3637\" src=\"https:\/\/open-boat-projects.org\/wp-content\/uploads\/2022\/11\/raspberry-pi-4-b-8gb-ram-300x196.jpg\" alt=\"\" width=\"170\" height=\"111\" srcset=\"https:\/\/open-boat-projects.org\/wp-content\/uploads\/2022\/11\/raspberry-pi-4-b-8gb-ram-300x196.jpg 300w, https:\/\/open-boat-projects.org\/wp-content\/uploads\/2022\/11\/raspberry-pi-4-b-8gb-ram-18x12.jpg 18w, https:\/\/open-boat-projects.org\/wp-content\/uploads\/2022\/11\/raspberry-pi-4-b-8gb-ram.jpg 600w\" sizes=\"auto, (max-width: 170px) 100vw, 170px\" \/><\/span><\/p>\n<p><span style=\"font-size: 10pt;\">Raspberry Pi 4B<\/span><\/td>\n<td style=\"width: 11.2821%; text-align: center; height: 24px;\"><span style=\"font-size: 10pt;\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone wp-image-3639\" src=\"https:\/\/open-boat-projects.org\/wp-content\/uploads\/2022\/11\/Waveshare_RS485_CAN-300x149.jpg\" alt=\"\" width=\"127\" height=\"63\" srcset=\"https:\/\/open-boat-projects.org\/wp-content\/uploads\/2022\/11\/Waveshare_RS485_CAN-300x149.jpg 300w, https:\/\/open-boat-projects.org\/wp-content\/uploads\/2022\/11\/Waveshare_RS485_CAN-768x381.jpg 768w, https:\/\/open-boat-projects.org\/wp-content\/uploads\/2022\/11\/Waveshare_RS485_CAN-18x9.jpg 18w, https:\/\/open-boat-projects.org\/wp-content\/uploads\/2022\/11\/Waveshare_RS485_CAN-760x380.jpg 760w, https:\/\/open-boat-projects.org\/wp-content\/uploads\/2022\/11\/Waveshare_RS485_CAN.jpg 906w\" sizes=\"auto, (max-width: 127px) 100vw, 127px\" \/><\/span><\/p>\n<p><a href=\"https:\/\/www.waveshare.com\/wiki\/RS485_CAN_HAT\" target=\"_blank\" rel=\"noopener\"><span style=\"font-size: 10pt;\">Wavershare RS485 CAN<\/span><\/a><\/td>\n<td style=\"width: 7.1275%; text-align: center; height: 24px;\"><span style=\"font-size: 10pt;\">1x<\/span><\/td>\n<td style=\"width: 7.34237%; text-align: center; height: 24px;\"><span style=\"font-size: 10pt;\">1 x RS485<\/span><\/td>\n<td style=\"width: 8.05875%; text-align: center; height: 24px;\"><span style=\"font-size: 10pt;\">1x<\/span><\/td>\n<td style=\"width: 7.98706%; text-align: center; height: 24px;\"><span style=\"font-size: 10pt;\">1x<\/span><\/td>\n<td style=\"width: 4.48602%; text-align: center; height: 24px;\"><span style=\"font-size: 10pt;\">5V power supply<\/span><\/td>\n<td style=\"width: 4.48602%; text-align: center;\"><\/td>\n<td style=\"width: 19.3052%; height: 24px;\"><span style=\"font-size: 10pt;\">Low-cost minimal solution for NMEA2000 and NMEA0183<\/span><\/td>\n<\/tr>\n<tr style=\"height: 24px;\">\n<td style=\"width: 15.0073%; height: 24px;\"><span style=\"font-size: 10pt;\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone wp-image-3637\" src=\"https:\/\/open-boat-projects.org\/wp-content\/uploads\/2022\/11\/raspberry-pi-4-b-8gb-ram-300x196.jpg\" alt=\"\" width=\"170\" height=\"111\" srcset=\"https:\/\/open-boat-projects.org\/wp-content\/uploads\/2022\/11\/raspberry-pi-4-b-8gb-ram-300x196.jpg 300w, https:\/\/open-boat-projects.org\/wp-content\/uploads\/2022\/11\/raspberry-pi-4-b-8gb-ram-18x12.jpg 18w, https:\/\/open-boat-projects.org\/wp-content\/uploads\/2022\/11\/raspberry-pi-4-b-8gb-ram.jpg 600w\" sizes=\"auto, (max-width: 170px) 100vw, 170px\" \/><\/span><\/p>\n<p><span style=\"font-size: 10pt;\">Raspberry Pi 4B<\/span><\/td>\n<td style=\"width: 11.2821%; text-align: center; height: 24px;\"><span style=\"font-size: 10pt;\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-3640\" src=\"https:\/\/open-boat-projects.org\/wp-content\/uploads\/2022\/11\/Waveshare_RS485_CAN_B.jpg\" alt=\"\" width=\"300\" height=\"225\" srcset=\"https:\/\/open-boat-projects.org\/wp-content\/uploads\/2022\/11\/Waveshare_RS485_CAN_B.jpg 300w, https:\/\/open-boat-projects.org\/wp-content\/uploads\/2022\/11\/Waveshare_RS485_CAN_B-16x12.jpg 16w\" sizes=\"auto, (max-width: 300px) 100vw, 300px\" \/><\/span><\/p>\n<p><a href=\"https:\/\/www.waveshare.com\/wiki\/RS485_CAN_HAT_(B)\" target=\"_blank\" rel=\"noopener\"><span style=\"font-size: 10pt;\">Waveshare RS485 CAN B<\/span><\/a><\/td>\n<td style=\"width: 7.1275%; text-align: center; height: 24px;\"><span style=\"font-size: 10pt;\">1x<\/span><\/td>\n<td style=\"width: 7.34237%; text-align: center; height: 24px;\"><span style=\"font-size: 10pt;\">2x RS485<\/span><\/td>\n<td style=\"width: 8.05875%; text-align: center; height: 24px;\"><span style=\"font-size: 10pt;\">1x<\/span><\/td>\n<td style=\"width: 7.98706%; text-align: center; height: 24px;\"><span style=\"font-size: 10pt;\">1x<\/span><\/td>\n<td style=\"width: 4.48602%; text-align: center; height: 24px;\"><span style=\"font-size: 10pt;\">12V input<\/span><\/td>\n<td style=\"width: 4.48602%; text-align: center;\"><\/td>\n<td style=\"width: 19.3052%; height: 24px;\"><span style=\"font-size: 10pt;\">Supply also possible via NMEA2000<\/span><\/p>\n<p><span style=\"font-size: 10pt;\">NMEA2000 and NMEA0183 ports isolated<\/span><\/p>\n<p><span style=\"font-size: 10pt;\">Can be expanded with another module<\/span><\/td>\n<\/tr>\n<tr>\n<td style=\"width: 15.0073%;\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone wp-image-3637\" src=\"https:\/\/open-boat-projects.org\/wp-content\/uploads\/2022\/11\/raspberry-pi-4-b-8gb-ram-300x196.jpg\" alt=\"\" width=\"170\" height=\"111\" srcset=\"https:\/\/open-boat-projects.org\/wp-content\/uploads\/2022\/11\/raspberry-pi-4-b-8gb-ram-300x196.jpg 300w, https:\/\/open-boat-projects.org\/wp-content\/uploads\/2022\/11\/raspberry-pi-4-b-8gb-ram-18x12.jpg 18w, https:\/\/open-boat-projects.org\/wp-content\/uploads\/2022\/11\/raspberry-pi-4-b-8gb-ram.jpg 600w\" sizes=\"auto, (max-width: 170px) 100vw, 170px\" \/><\/p>\n<p><span style=\"font-size: 10pt;\">Raspberry Pi 4B<\/span><\/p>\n<p><span style=\"font-size: 10pt;\">\u00a0<\/span><\/td>\n<td style=\"width: 11.2821%; text-align: center;\"><a href=\"https:\/\/www.waveshare.com\/wiki\/RS485_CAN_HAT_(B)\" target=\"_blank\" rel=\"noopener\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone wp-image-3694\" src=\"https:\/\/open-boat-projects.org\/wp-content\/uploads\/2022\/11\/Wafeshare_2x_CAN-300x255.png\" alt=\"\" width=\"128\" height=\"109\" srcset=\"https:\/\/open-boat-projects.org\/wp-content\/uploads\/2022\/11\/Wafeshare_2x_CAN-300x255.png 300w, https:\/\/open-boat-projects.org\/wp-content\/uploads\/2022\/11\/Wafeshare_2x_CAN-14x12.png 14w, https:\/\/open-boat-projects.org\/wp-content\/uploads\/2022\/11\/Wafeshare_2x_CAN.png 634w\" sizes=\"auto, (max-width: 128px) 100vw, 128px\" \/><\/a><\/p>\n<p><span style=\"font-size: 10pt;\"><a href=\"https:\/\/www.waveshare.com\/wiki\/2-CH_CAN_HAT\" target=\"_blank\" rel=\"noopener\">Waveshare 2x CAN<\/a><br \/>\n<\/span><\/td>\n<td style=\"width: 7.1275%; text-align: center;\"><span style=\"font-size: 10pt;\">2x<br \/>\n<\/span><\/td>\n<td style=\"width: 7.34237%; text-align: center;\"><span style=\"font-size: 10pt;\">\u2013<br \/>\n<\/span><\/td>\n<td style=\"width: 8.05875%; text-align: center;\"><span style=\"font-size: 10pt;\">1x<br \/>\n<\/span><\/td>\n<td style=\"width: 7.98706%; text-align: center;\"><span style=\"font-size: 10pt;\">1x<br \/>\n<\/span><\/td>\n<td style=\"width: 4.48602%; text-align: center;\"><span style=\"font-size: 10pt;\">5V power supply<br \/>\n<\/span><\/td>\n<td style=\"width: 4.48602%; text-align: center;\"><\/td>\n<td style=\"width: 19.3052%;\"><span style=\"font-size: 10pt;\">Can be used for two separate NMEA2000 buses<\/span><\/p>\n<p><span style=\"font-size: 10pt;\">Second bus can also be used for engine data J1939<\/span><\/p>\n<p><span style=\"font-size: 10pt;\">2x isolated CAN outputs<br \/>\n<\/span><\/td>\n<\/tr>\n<tr style=\"height: 24px;\">\n<td style=\"width: 15.0073%; height: 24px;\"><span style=\"font-size: 10pt;\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone wp-image-3637\" src=\"https:\/\/open-boat-projects.org\/wp-content\/uploads\/2022\/11\/raspberry-pi-4-b-8gb-ram-300x196.jpg\" alt=\"\" width=\"170\" height=\"111\" srcset=\"https:\/\/open-boat-projects.org\/wp-content\/uploads\/2022\/11\/raspberry-pi-4-b-8gb-ram-300x196.jpg 300w, https:\/\/open-boat-projects.org\/wp-content\/uploads\/2022\/11\/raspberry-pi-4-b-8gb-ram-18x12.jpg 18w, https:\/\/open-boat-projects.org\/wp-content\/uploads\/2022\/11\/raspberry-pi-4-b-8gb-ram.jpg 600w\" sizes=\"auto, (max-width: 170px) 100vw, 170px\" \/><\/span><\/p>\n<p><span style=\"font-size: 10pt;\">Raspberry Pi 4B<\/span><\/td>\n<td style=\"width: 11.2821%; text-align: center; height: 24px;\"><span style=\"font-size: 10pt;\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-medium wp-image-3380\" src=\"https:\/\/open-boat-projects.org\/wp-content\/uploads\/2022\/09\/PiCAN-M_SMPS-300x300.webp\" alt=\"\" width=\"300\" height=\"300\" srcset=\"https:\/\/open-boat-projects.org\/wp-content\/uploads\/2022\/09\/PiCAN-M_SMPS-300x300.webp 300w, https:\/\/open-boat-projects.org\/wp-content\/uploads\/2022\/09\/PiCAN-M_SMPS-150x150.webp 150w, https:\/\/open-boat-projects.org\/wp-content\/uploads\/2022\/09\/PiCAN-M_SMPS-12x12.webp 12w, https:\/\/open-boat-projects.org\/wp-content\/uploads\/2022\/09\/PiCAN-M_SMPS.webp 615w\" sizes=\"auto, (max-width: 300px) 100vw, 300px\" \/><\/span><\/p>\n<p><a href=\"https:\/\/open-boat-projects.org\/en\/pican-m-mit-signalk-und-openplotter\/\"><span style=\"font-size: 10pt;\">PiCAN M<\/span><\/a><\/td>\n<td style=\"width: 7.1275%; text-align: center; height: 24px;\"><span style=\"font-size: 10pt;\">1x<\/span><\/td>\n<td style=\"width: 7.34237%; text-align: center; height: 24px;\"><span style=\"font-size: 10pt;\">1 x RS422<\/span><\/td>\n<td style=\"width: 8.05875%; text-align: center; height: 24px;\"><span style=\"font-size: 10pt;\">1x<\/span><\/td>\n<td style=\"width: 7.98706%; text-align: center; height: 24px;\"><span style=\"font-size: 10pt;\">1x<\/span><\/td>\n<td style=\"width: 4.48602%; text-align: center; height: 24px;\"><span style=\"font-size: 10pt;\">12V input<\/span><\/td>\n<td style=\"width: 4.48602%; text-align: center;\"><\/td>\n<td style=\"width: 19.3052%; height: 24px;\"><span style=\"font-size: 10pt;\">Supply also possible via NMEA2000<\/span><\/p>\n<p><span style=\"font-size: 10pt;\">NMEA2000 via M12 connector<\/span><\/p>\n<p><span style=\"font-size: 10pt;\">Only supports RS422<\/span><\/p>\n<p><span style=\"font-size: 10pt;\">I2C with 3.3V levels<\/span><\/p>\n<p><span style=\"font-size: 10pt;\">Matching housing available<\/span><\/td>\n<\/tr>\n<tr>\n<td style=\"width: 15.0073%;\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone wp-image-3637\" src=\"https:\/\/open-boat-projects.org\/wp-content\/uploads\/2022\/11\/raspberry-pi-4-b-8gb-ram-300x196.jpg\" alt=\"\" width=\"170\" height=\"111\" srcset=\"https:\/\/open-boat-projects.org\/wp-content\/uploads\/2022\/11\/raspberry-pi-4-b-8gb-ram-300x196.jpg 300w, https:\/\/open-boat-projects.org\/wp-content\/uploads\/2022\/11\/raspberry-pi-4-b-8gb-ram-18x12.jpg 18w, https:\/\/open-boat-projects.org\/wp-content\/uploads\/2022\/11\/raspberry-pi-4-b-8gb-ram.jpg 600w\" sizes=\"auto, (max-width: 170px) 100vw, 170px\" \/><\/p>\n<p><span style=\"font-size: 10pt;\">Raspberry Pi 4B<\/span><\/p>\n<p><span style=\"font-size: 10pt;\">\u00a0<\/span><\/td>\n<td style=\"width: 11.2821%; text-align: center;\"><span style=\"font-size: 10pt;\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-medium wp-image-3691\" src=\"https:\/\/open-boat-projects.org\/wp-content\/uploads\/2022\/11\/PiCAN2-300x300.webp\" alt=\"\" width=\"300\" height=\"300\" srcset=\"https:\/\/open-boat-projects.org\/wp-content\/uploads\/2022\/11\/PiCAN2-300x300.webp 300w, https:\/\/open-boat-projects.org\/wp-content\/uploads\/2022\/11\/PiCAN2-150x150.webp 150w, https:\/\/open-boat-projects.org\/wp-content\/uploads\/2022\/11\/PiCAN2-12x12.webp 12w, https:\/\/open-boat-projects.org\/wp-content\/uploads\/2022\/11\/PiCAN2.webp 473w\" sizes=\"auto, (max-width: 300px) 100vw, 300px\" \/><\/span><\/p>\n<p><a href=\"https:\/\/www.skpang.co.uk\/collections\/hats\/products\/pican2-can-bus-board-for-raspberry-pi-2-3\"><span style=\"font-size: 10pt;\">PiCAN2<\/span><\/a><\/td>\n<td style=\"width: 7.1275%; text-align: center;\"><span style=\"font-size: 10pt;\">1x<br \/>\n<\/span><\/td>\n<td style=\"width: 7.34237%; text-align: center;\"><span style=\"font-size: 10pt;\">\u2013<br \/>\n<\/span><\/td>\n<td style=\"width: 8.05875%; text-align: center;\"><span style=\"font-size: 10pt;\">\u00a01x<\/span><\/td>\n<td style=\"width: 7.98706%; text-align: center;\"><span style=\"font-size: 10pt;\">\u00a01x<\/span><\/td>\n<td style=\"width: 4.48602%; text-align: center;\"><span style=\"font-size: 10pt;\">5V power supply<br \/>\n<\/span><\/td>\n<td style=\"width: 4.48602%; text-align: center;\"><\/td>\n<td style=\"width: 19.3052%;\"><span style=\"font-size: 10pt;\">Inexpensive alternative to PiCAN-M if only NMEA2000 is required<\/span><\/p>\n<p><span style=\"font-size: 10pt;\">NMEA2000 via DB9 or screw connections<br \/>\n<\/span><\/td>\n<\/tr>\n<tr style=\"height: 24px;\">\n<td style=\"width: 15.0073%; height: 24px;\"><span style=\"font-size: 10pt;\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone wp-image-3637\" src=\"https:\/\/open-boat-projects.org\/wp-content\/uploads\/2022\/11\/raspberry-pi-4-b-8gb-ram-300x196.jpg\" alt=\"\" width=\"170\" height=\"111\" srcset=\"https:\/\/open-boat-projects.org\/wp-content\/uploads\/2022\/11\/raspberry-pi-4-b-8gb-ram-300x196.jpg 300w, https:\/\/open-boat-projects.org\/wp-content\/uploads\/2022\/11\/raspberry-pi-4-b-8gb-ram-18x12.jpg 18w, https:\/\/open-boat-projects.org\/wp-content\/uploads\/2022\/11\/raspberry-pi-4-b-8gb-ram.jpg 600w\" sizes=\"auto, (max-width: 170px) 100vw, 170px\" \/><\/span><\/p>\n<p><span style=\"font-size: 10pt;\">Raspberry Pi 4B<\/span><\/td>\n<td style=\"width: 11.2821%; text-align: center; height: 24px;\"><span style=\"font-size: 10pt;\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-3642\" src=\"https:\/\/open-boat-projects.org\/wp-content\/uploads\/2022\/11\/MCS.png\" alt=\"\" width=\"222\" height=\"138\" srcset=\"https:\/\/open-boat-projects.org\/wp-content\/uploads\/2022\/11\/MCS.png 222w, https:\/\/open-boat-projects.org\/wp-content\/uploads\/2022\/11\/MCS-18x12.png 18w\" sizes=\"auto, (max-width: 222px) 100vw, 222px\" \/><\/span><\/p>\n<p><a href=\"https:\/\/open-boat-projects.org\/en\/marine-control-server\/\"><span style=\"font-size: 10pt;\">Marine Control Server<\/span><\/a><\/td>\n<td style=\"width: 7.1275%; text-align: center; height: 24px;\"><span style=\"font-size: 10pt;\">1x<\/span><\/td>\n<td style=\"width: 7.34237%; text-align: center; height: 24px;\"><span style=\"font-size: 10pt;\">6x RS485<\/span><\/td>\n<td style=\"width: 8.05875%; text-align: center; height: 24px;\"><span style=\"font-size: 10pt;\">1x<\/span><\/td>\n<td style=\"width: 7.98706%; text-align: center; height: 24px;\"><span style=\"font-size: 10pt;\">1x<\/span><\/td>\n<td style=\"width: 4.48602%; text-align: center; height: 24px;\"><span style=\"font-size: 10pt;\">12V input<\/span><\/td>\n<td style=\"width: 4.48602%; text-align: center;\"><\/td>\n<td style=\"width: 19.3052%; height: 24px;\"><span style=\"font-size: 10pt;\">Supply also possible via NMEA2000<\/span><\/p>\n<p><span style=\"font-size: 10pt;\">Shutdown circuit for power off<\/span><\/p>\n<p><span style=\"font-size: 10pt;\">I2C with 5V levels<\/span><\/p>\n<p><span style=\"font-size: 10pt;\">Matching housing available<\/span><\/p>\n<p><span style=\"font-size: 10pt;\">Analog and digital extensions available over I2C<\/span><\/td>\n<\/tr>\n<tr>\n<td style=\"width: 15.0073%;\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone wp-image-3637\" src=\"https:\/\/open-boat-projects.org\/wp-content\/uploads\/2022\/11\/raspberry-pi-4-b-8gb-ram-300x196.jpg\" alt=\"\" width=\"170\" height=\"111\" srcset=\"https:\/\/open-boat-projects.org\/wp-content\/uploads\/2022\/11\/raspberry-pi-4-b-8gb-ram-300x196.jpg 300w, https:\/\/open-boat-projects.org\/wp-content\/uploads\/2022\/11\/raspberry-pi-4-b-8gb-ram-18x12.jpg 18w, https:\/\/open-boat-projects.org\/wp-content\/uploads\/2022\/11\/raspberry-pi-4-b-8gb-ram.jpg 600w\" sizes=\"auto, (max-width: 170px) 100vw, 170px\" \/><\/p>\n<p><span style=\"font-size: 10pt;\">Raspberry Pi 4B<\/span><\/p>\n<p><span style=\"font-size: 10pt;\">\u00a0<\/span><\/td>\n<td style=\"width: 11.2821%; text-align: center;\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone wp-image-4563\" src=\"https:\/\/open-boat-projects.org\/wp-content\/uploads\/2023\/03\/MCS3-300x238.png\" alt=\"\" width=\"126\" height=\"100\" srcset=\"https:\/\/open-boat-projects.org\/wp-content\/uploads\/2023\/03\/MCS3-300x238.png 300w, https:\/\/open-boat-projects.org\/wp-content\/uploads\/2023\/03\/MCS3-15x12.png 15w, https:\/\/open-boat-projects.org\/wp-content\/uploads\/2023\/03\/MCS3.png 336w\" sizes=\"auto, (max-width: 126px) 100vw, 126px\" \/><\/p>\n<p><span style=\"font-size: 10pt;\"><a href=\"https:\/\/open-boat-projects.org\/en\/marine-control-server\/\">Naval Control Server 2<\/a><\/span><\/p>\n<p><span style=\"font-size: 10pt;\">\u00a0<\/span><\/td>\n<td style=\"width: 7.1275%; text-align: center;\"><span style=\"font-size: 10pt;\">1x<br \/>\n<\/span><\/td>\n<td style=\"width: 7.34237%; text-align: center;\"><span style=\"font-size: 10pt;\">4x RS485<br \/>\n<\/span><\/td>\n<td style=\"width: 8.05875%; text-align: center;\"><span style=\"font-size: 10pt;\">1x<br \/>\n<\/span><\/td>\n<td style=\"width: 7.98706%; text-align: center;\"><span style=\"font-size: 10pt;\">1x<br \/>\n<\/span><\/td>\n<td style=\"width: 4.48602%; text-align: center;\"><span style=\"font-size: 10pt;\">12V input<br \/>\n<\/span><\/td>\n<td style=\"width: 4.48602%; text-align: center;\"><\/td>\n<td style=\"width: 19.3052%;\"><span style=\"font-size: 10pt;\">Supply also possible via NMEA2000<\/span><\/p>\n<p><span style=\"font-size: 10pt;\">Shutdown circuit for power off<\/span><\/p>\n<p><span style=\"font-size: 10pt;\">I2C with 5V levels<\/span><\/p>\n<p><span style=\"font-size: 10pt;\">Matching housing available<\/span><\/p>\n<p><span style=\"font-size: 10pt;\">Analog and digital extensions available over I2C<\/span><\/td>\n<\/tr>\n<tr>\n<td style=\"width: 15.0073%;\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone wp-image-3637\" src=\"https:\/\/open-boat-projects.org\/wp-content\/uploads\/2022\/11\/raspberry-pi-4-b-8gb-ram-300x196.jpg\" alt=\"\" width=\"170\" height=\"111\" srcset=\"https:\/\/open-boat-projects.org\/wp-content\/uploads\/2022\/11\/raspberry-pi-4-b-8gb-ram-300x196.jpg 300w, https:\/\/open-boat-projects.org\/wp-content\/uploads\/2022\/11\/raspberry-pi-4-b-8gb-ram-18x12.jpg 18w, https:\/\/open-boat-projects.org\/wp-content\/uploads\/2022\/11\/raspberry-pi-4-b-8gb-ram.jpg 600w\" sizes=\"auto, (max-width: 170px) 100vw, 170px\" \/><\/p>\n<p><span style=\"font-size: 10pt;\">Raspberry Pi 4B<\/span><\/td>\n<td style=\"width: 11.2821%; text-align: center;\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone wp-image-4783\" src=\"https:\/\/open-boat-projects.org\/wp-content\/uploads\/2023\/03\/mcarthur-300x200.png\" alt=\"\" width=\"200\" height=\"133\" srcset=\"https:\/\/open-boat-projects.org\/wp-content\/uploads\/2023\/03\/mcarthur-300x200.png 300w, https:\/\/open-boat-projects.org\/wp-content\/uploads\/2023\/03\/mcarthur-18x12.png 18w, https:\/\/open-boat-projects.org\/wp-content\/uploads\/2023\/03\/mcarthur.png 645w\" sizes=\"auto, (max-width: 200px) 100vw, 200px\" \/><\/p>\n<p><a href=\"https:\/\/github.com\/OpenMarine\/MacArthur-HAT\" target=\"_blank\" rel=\"noopener\"><span style=\"font-size: 10pt;\">McArthur<\/span><\/a><\/td>\n<td style=\"width: 7.1275%; text-align: center;\"><span style=\"font-size: 10pt;\">1x<br \/>\n<\/span><\/td>\n<td style=\"width: 7.34237%; text-align: center;\"><span style=\"font-size: 10pt;\">4xRS485<br \/>\n<\/span><\/td>\n<td style=\"width: 8.05875%; text-align: center;\"><span style=\"font-size: 10pt;\">1x<br \/>\n<\/span><\/td>\n<td style=\"width: 7.98706%; text-align: center;\"><span style=\"font-size: 10pt;\">1x<br \/>\n<\/span><\/td>\n<td style=\"width: 4.48602%; text-align: center;\"><span style=\"font-size: 10pt;\">12V input<br \/>\n<\/span><\/td>\n<td style=\"width: 4.48602%; text-align: center;\"><\/td>\n<td style=\"width: 19.3052%;\"><span style=\"font-size: 10pt;\">1x SeaTalk (RX)<br \/>\n<\/span><span style=\"font-size: 10pt;\">Supply also possible via NMEA2000 and SeaTalk<\/span><\/p>\n<p><span style=\"font-size: 10pt;\">Shutdown circuit for power off<\/span><\/p>\n<p><span style=\"font-size: 10pt;\">\u00a0<\/span><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h2>Useful Raspi extensions<\/h2>\n<p>In addition to the Raspberry extensions listed above, there are other useful extensions that can be added.<\/p>\n<table style=\"border-collapse: collapse; width: 57.9513%; height: 529px;\">\n<tbody>\n<tr style=\"background-color: #aaaaaa;\">\n<td style=\"width: 17.9322%; height: 24px;\"><span style=\"font-size: 10pt;\"><strong>extension<\/strong><\/span><\/td>\n<td style=\"width: 18.2903%; height: 24px;\"><span style=\"font-size: 10pt;\"><strong>function<\/strong><\/span><\/td>\n<td style=\"width: 21.7287%; height: 24px;\"><span style=\"font-size: 10pt;\"><strong>comment<\/strong><\/span><\/td>\n<\/tr>\n<tr style=\"height: 199px;\">\n<td style=\"width: 17.9322%; height: 199px;\"><span style=\"font-size: 10pt;\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone wp-image-3673\" src=\"https:\/\/open-boat-projects.org\/wp-content\/uploads\/2022\/11\/dAISy_HAT-300x200.webp\" alt=\"\" width=\"182\" height=\"121\" srcset=\"https:\/\/open-boat-projects.org\/wp-content\/uploads\/2022\/11\/dAISy_HAT-300x200.webp 300w, https:\/\/open-boat-projects.org\/wp-content\/uploads\/2022\/11\/dAISy_HAT-18x12.webp 18w, https:\/\/open-boat-projects.org\/wp-content\/uploads\/2022\/11\/dAISy_HAT.webp 470w\" sizes=\"auto, (max-width: 182px) 100vw, 182px\" \/><\/span><\/p>\n<p><span style=\"font-size: 10pt;\"><a href=\"https:\/\/shop.wegmatt.com\/products\/daisy-hat-ais-receiver\">dAISY HAT<\/a><\/span><\/td>\n<td style=\"width: 18.2903%; height: 199px;\"><span style=\"font-size: 10pt;\">2-channel AIS receiver<\/span><\/td>\n<td style=\"width: 21.7287%; height: 199px;\"><\/td>\n<\/tr>\n<tr style=\"height: 234px;\">\n<td style=\"width: 17.9322%; height: 234px;\"><span style=\"font-size: 10pt;\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone wp-image-3674\" src=\"https:\/\/open-boat-projects.org\/wp-content\/uploads\/2022\/11\/strompi-300x300.jpg\" alt=\"\" width=\"156\" height=\"156\" srcset=\"https:\/\/open-boat-projects.org\/wp-content\/uploads\/2022\/11\/strompi-300x300.jpg 300w, https:\/\/open-boat-projects.org\/wp-content\/uploads\/2022\/11\/strompi-1024x1024.jpg 1024w, https:\/\/open-boat-projects.org\/wp-content\/uploads\/2022\/11\/strompi-150x150.jpg 150w, https:\/\/open-boat-projects.org\/wp-content\/uploads\/2022\/11\/strompi-768x768.jpg 768w, https:\/\/open-boat-projects.org\/wp-content\/uploads\/2022\/11\/strompi-12x12.jpg 12w, https:\/\/open-boat-projects.org\/wp-content\/uploads\/2022\/11\/strompi.jpg 1280w\" sizes=\"auto, (max-width: 156px) 100vw, 156px\" \/><\/span><\/p>\n<p><span style=\"font-size: 10pt;\"><a href=\"https:\/\/strompi.joy-it.net\/de\/strompi-family\">StromPi 3\/4 HAT<\/a><\/span><\/td>\n<td style=\"width: 18.2903%; height: 234px;\"><span style=\"font-size: 10pt;\">12V power supply with UPS function<\/span><\/td>\n<td style=\"width: 21.7287%; height: 234px;\"><span style=\"font-size: 10pt;\">StromPi 3 has problems with Raspi 4B due to excessive power consumption<\/span><\/p>\n<p><span style=\"font-size: 10pt;\">Causes AIS reception interference on the Montessier HAT<\/span><\/td>\n<\/tr>\n<tr style=\"height: 24px;\">\n<td style=\"width: 17.9322%; height: 24px;\"><span style=\"font-size: 10pt;\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone wp-image-3675\" src=\"https:\/\/open-boat-projects.org\/wp-content\/uploads\/2022\/11\/moitessier_v2.5-300x209.png\" alt=\"\" width=\"205\" height=\"143\" srcset=\"https:\/\/open-boat-projects.org\/wp-content\/uploads\/2022\/11\/moitessier_v2.5-300x209.png 300w, https:\/\/open-boat-projects.org\/wp-content\/uploads\/2022\/11\/moitessier_v2.5-1024x715.png 1024w, https:\/\/open-boat-projects.org\/wp-content\/uploads\/2022\/11\/moitessier_v2.5-768x536.png 768w, https:\/\/open-boat-projects.org\/wp-content\/uploads\/2022\/11\/moitessier_v2.5-1536x1072.png 1536w, https:\/\/open-boat-projects.org\/wp-content\/uploads\/2022\/11\/moitessier_v2.5-18x12.png 18w, https:\/\/open-boat-projects.org\/wp-content\/uploads\/2022\/11\/moitessier_v2.5.png 1920w\" sizes=\"auto, (max-width: 205px) 100vw, 205px\" \/><\/span><\/p>\n<p><span style=\"font-size: 10pt;\"><a href=\"https:\/\/www.rooco.eu\/products\/moitessier-hat-2-raspberry-pi-openplotter-ais-receiver\/\">Montessier 2.0 HAT<\/a><\/span><\/td>\n<td style=\"width: 18.2903%; height: 24px;\"><span style=\"font-size: 10pt;\">AIS and GPS receiver with 9-axis sensor<\/span><\/td>\n<td style=\"width: 21.7287%; height: 24px;\"><\/td>\n<\/tr>\n<tr style=\"height: 24px;\">\n<td style=\"width: 17.9322%; height: 24px;\"><span style=\"font-size: 10pt;\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone wp-image-2792\" src=\"https:\/\/open-boat-projects.org\/wp-content\/uploads\/2022\/02\/Arctic-300x300.jpg\" alt=\"\" width=\"174\" height=\"174\" srcset=\"https:\/\/open-boat-projects.org\/wp-content\/uploads\/2022\/02\/Arctic-300x300.jpg 300w, https:\/\/open-boat-projects.org\/wp-content\/uploads\/2022\/02\/Arctic-150x150.jpg 150w, https:\/\/open-boat-projects.org\/wp-content\/uploads\/2022\/02\/Arctic-768x768.jpg 768w, https:\/\/open-boat-projects.org\/wp-content\/uploads\/2022\/02\/Arctic-12x12.jpg 12w, https:\/\/open-boat-projects.org\/wp-content\/uploads\/2022\/02\/Arctic.jpg 1000w\" sizes=\"auto, (max-width: 174px) 100vw, 174px\" \/><\/span><\/p>\n<p><span style=\"font-size: 10pt;\"><a href=\"https:\/\/www.rasppishop.de\/Argon-Fan-HAT-RPi-Modul\">Argon Fun HAT<\/a><\/span><\/td>\n<td style=\"width: 18.2903%; height: 24px;\"><span style=\"font-size: 10pt;\">Regulated fan<\/span><\/td>\n<td style=\"width: 21.7287%; height: 24px;\"><\/td>\n<\/tr>\n<tr style=\"height: 24px;\">\n<td style=\"width: 17.9322%; height: 24px;\"><\/td>\n<td style=\"width: 18.2903%; height: 24px;\"><\/td>\n<td style=\"width: 21.7287%; height: 24px;\"><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h2>bus systems<\/h2>\n<p>The bus systems in the boat can be connected in various ways:<\/p>\n<ul>\n<li><strong>USB for bus systems<\/strong>\n<ul>\n<li><a href=\"https:\/\/de.wikipedia.org\/wiki\/NMEA_0183\" target=\"_blank\" rel=\"noopener\">NMEA0183<\/a> via USB<a href=\"https:\/\/de.wikipedia.org\/wiki\/EIA-485\" target=\"_blank\" rel=\"noopener\">RS485<\/a>\/<a href=\"https:\/\/de.wikipedia.org\/wiki\/EIA-422\">RS422\/<\/a><a href=\"https:\/\/de.wikipedia.org\/wiki\/RS-232\">RS232<\/a> converter<\/li>\n<li><a href=\"https:\/\/actisense.com\/products\/ngt-1-nmea-2000-to-pc-interface\/\" target=\"_blank\" rel=\"noopener\">Actisense NGT1<\/a> USB <a href=\"https:\/\/de.wikipedia.org\/wiki\/NMEA_2000\" target=\"_blank\" rel=\"noopener\">NMEA2000<\/a> to PC gateway 300172 1x NMEA2000<\/li>\n<li>M5Stack Atom CAN BUS Kit 1x NMEA0183 and 1x NMEA2000<\/li>\n<\/ul>\n<\/li>\n<li><strong>USB for devices<\/strong>\n<ul>\n<li>GPS dongle for position data NMEA0183<\/li>\n<li>DVBT stick for TV, radio, AIS<\/li>\n<li><a href=\"https:\/\/shop.wegmatt.com\/products\/daisy-ais-receiver\" target=\"_blank\" rel=\"noopener\">dAISy<\/a>, Boat traffic via AIS NMEA0183<\/li>\n<li>Memory stick as map storage and for backups<\/li>\n<li>USB dongle as copy protection for O-Charts maps<\/li>\n<li>USB WiFi stick for a second wireless LAN<\/li>\n<\/ul>\n<\/li>\n<li><strong>ethernet<\/strong>\n<ul>\n<li>TCP\/UDP port NMEA0183, <a href=\"http:\/\/www.seasmart.net\/marine-wireless-networking-wifi.html\" target=\"_blank\" rel=\"noopener\">SeaSmart<\/a> (NMEA2000)<\/li>\n<\/ul>\n<\/li>\n<li><strong>WiFi<\/strong>\n<ul>\n<li>TCP\/UDP port NMEA0183, SeaSmart (NMEA2000)<\/li>\n<\/ul>\n<\/li>\n<li><strong>GPIO connector<\/strong>\n<ul>\n<li>Marine Control Server MCS (1x NMEA2000, 6x NMEA0183)<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<h2>USB hardware extensions<\/h2>\n<p>The simplest way of connecting to bus systems would be via USB, which can be implemented with a cheap USB-RS485\/422 converter for NMEA0183. There are various versions of these converters on the Internet. One should be careful to buy converters that are supported by Linux, eg equipped with chips from FTDI, HC340 or PL2303. There are so-called combination converters that support both RS422 and RS485. But there are also converters that only support RS485. With a combination adapter you have the best choice and can later decide how you want to use the converter and encounter fewer connection problems due to incorrect signal matching.<\/p>\n<p>NMEA2000 can also be connected to the Raspi via USB. Either about that <a href=\"https:\/\/actisense.com\/products\/ngt-1-nmea-2000-to-pc-interface\/\" target=\"_blank\" rel=\"noopener\">Actisense Gateway NGT1<\/a> or via the open source\/open hardware M5Stack Atom CAN BUS Kit. The project <a href=\"https:\/\/open-boat-projects.org\/en\/nmea2000-gateway-mit-m5stack-atom\/\">NMEA2000 gateway with M5Stack Atom<\/a> describes how similar functionalities can be implemented as with the Actisense Gateway NGT1 by installing a gateway firmware.<\/p>\n<p>Below are some examples of useful USB hardware extensions.<\/p>\n<table style=\"border-collapse: collapse; width: 74.6418%; height: 492px;\">\n<tbody>\n<tr style=\"height: 24px; background-color: #aaaaaa;\">\n<td style=\"width: 19.341%; height: 24px;\"><span style=\"font-size: 10pt;\"><strong>extension<\/strong><\/span><\/td>\n<td style=\"width: 16.404%; height: 24px;\"><span style=\"font-size: 10pt;\"><strong>functionality<\/strong><\/span><\/td>\n<td style=\"width: 16.9771%; height: 24px;\"><span style=\"font-size: 10pt;\"><strong>Data rate<\/strong><\/span><\/td>\n<td style=\"width: 21.9197%; height: 24px;\"><span style=\"font-size: 10pt;\"><strong>Remarks<\/strong><\/span><\/td>\n<\/tr>\n<tr style=\"height: 228px;\">\n<td style=\"width: 19.341%; height: 228px;\"><span style=\"font-size: 10pt;\"><a href=\"https:\/\/open-boat-projects.org\/wp-content\/uploads\/2022\/02\/USB_RS422_Adapter2.jpg\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone wp-image-2769\" src=\"https:\/\/open-boat-projects.org\/wp-content\/uploads\/2022\/02\/USB_RS422_Adapter2-300x300.jpg\" alt=\"\" width=\"150\" height=\"150\" srcset=\"https:\/\/open-boat-projects.org\/wp-content\/uploads\/2022\/02\/USB_RS422_Adapter2-300x300.jpg 300w, https:\/\/open-boat-projects.org\/wp-content\/uploads\/2022\/02\/USB_RS422_Adapter2-150x150.jpg 150w, https:\/\/open-boat-projects.org\/wp-content\/uploads\/2022\/02\/USB_RS422_Adapter2-768x768.jpg 768w, https:\/\/open-boat-projects.org\/wp-content\/uploads\/2022\/02\/USB_RS422_Adapter2-12x12.jpg 12w, https:\/\/open-boat-projects.org\/wp-content\/uploads\/2022\/02\/USB_RS422_Adapter2.jpg 1000w\" sizes=\"auto, (max-width: 150px) 100vw, 150px\" \/><\/a><\/span><\/p>\n<p><span style=\"font-size: 10pt;\">USB-RS422\/RS485 converter<\/span><\/td>\n<td style=\"width: 16.404%; height: 228px;\"><span style=\"font-size: 10pt;\">RS422:<\/span><\/p>\n<ul>\n<li><span style=\"font-size: 10pt;\">T+, T-, R+, R-, GND<\/span><\/li>\n<\/ul>\n<p><span style=\"font-size: 10pt;\">RS485:<\/span><\/p>\n<ul>\n<li><span style=\"font-size: 10pt;\">A, B, GND<\/span><\/li>\n<\/ul>\n<\/td>\n<td style=\"width: 16.9771%; height: 228px;\"><span style=\"font-size: 10pt;\">1200\u2026115200 baud<\/span><\/td>\n<td style=\"width: 21.9197%; height: 228px;\"><span style=\"font-size: 10pt;\">Practical, universal converter with screw connections for remote mounting<\/span><\/td>\n<\/tr>\n<tr style=\"height: 24px;\">\n<td style=\"width: 19.341%; height: 24px;\"><span style=\"font-size: 10pt;\"><a href=\"https:\/\/open-boat-projects.org\/wp-content\/uploads\/2022\/11\/usb-rs485_2.jpg\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone wp-image-3648\" src=\"https:\/\/open-boat-projects.org\/wp-content\/uploads\/2022\/11\/usb-rs485_2.jpg\" alt=\"\" width=\"157\" height=\"157\" srcset=\"https:\/\/open-boat-projects.org\/wp-content\/uploads\/2022\/11\/usb-rs485_2.jpg 225w, https:\/\/open-boat-projects.org\/wp-content\/uploads\/2022\/11\/usb-rs485_2-150x150.jpg 150w, https:\/\/open-boat-projects.org\/wp-content\/uploads\/2022\/11\/usb-rs485_2-12x12.jpg 12w\" sizes=\"auto, (max-width: 157px) 100vw, 157px\" \/><\/a><\/span><\/p>\n<p><span style=\"font-size: 10pt;\">USB-RS422\/RS485 converter<\/span><\/td>\n<td style=\"width: 16.404%; height: 24px;\"><span style=\"font-size: 10pt;\">RS422:<\/span><\/p>\n<ul>\n<li><span style=\"font-size: 10pt;\">T+, T-, R+, R-, GND<\/span><\/li>\n<\/ul>\n<p><span style=\"font-size: 10pt;\">RS485:<\/span><\/p>\n<ul>\n<li><span style=\"font-size: 10pt;\">A, B, GND<\/span><\/li>\n<\/ul>\n<\/td>\n<td style=\"width: 16.9771%; height: 24px;\"><span style=\"font-size: 10pt;\">1200\u2026115200 baud<br \/>\n<\/span><\/td>\n<td style=\"width: 21.9197%; height: 24px;\"><span style=\"font-size: 10pt;\">Practical screw connections<\/span><\/td>\n<\/tr>\n<tr style=\"height: 24px;\">\n<td style=\"width: 19.341%; height: 24px;\"><span style=\"font-size: 10pt;\"><a href=\"https:\/\/open-boat-projects.org\/wp-content\/uploads\/2022\/02\/RS422_RS485_1.png\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone wp-image-2772\" src=\"https:\/\/open-boat-projects.org\/wp-content\/uploads\/2022\/02\/RS422_RS485_1-300x288.png\" alt=\"\" width=\"181\" height=\"174\" srcset=\"https:\/\/open-boat-projects.org\/wp-content\/uploads\/2022\/02\/RS422_RS485_1-300x288.png 300w, https:\/\/open-boat-projects.org\/wp-content\/uploads\/2022\/02\/RS422_RS485_1-12x12.png 12w, https:\/\/open-boat-projects.org\/wp-content\/uploads\/2022\/02\/RS422_RS485_1.png 465w\" sizes=\"auto, (max-width: 181px) 100vw, 181px\" \/><\/a><\/span><\/td>\n<td style=\"width: 16.404%; height: 24px;\"><span style=\"font-size: 10pt;\">RS422:<\/span><\/p>\n<ul>\n<li><span style=\"font-size: 10pt;\">T+, T-, R+, R-, GND<\/span><\/li>\n<\/ul>\n<p><span style=\"font-size: 10pt;\">RS485:<\/span><\/p>\n<ul>\n<li><span style=\"font-size: 10pt;\">A, B, GND<\/span><\/li>\n<\/ul>\n<\/td>\n<td style=\"width: 16.9771%; height: 24px;\"><span style=\"font-size: 10pt;\">1200\u2026115200 baud<br \/>\n<\/span><\/td>\n<td style=\"width: 21.9197%; height: 24px;\"><span style=\"font-size: 10pt;\">Blocks neighboring USB ports on the Raspi<\/span><\/td>\n<\/tr>\n<tr style=\"height: 24px;\">\n<td style=\"width: 19.341%; height: 24px;\"><span style=\"font-size: 10pt;\"><a href=\"https:\/\/open-boat-projects.org\/wp-content\/uploads\/2022\/02\/RS485_1.jpg\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone wp-image-2771\" src=\"https:\/\/open-boat-projects.org\/wp-content\/uploads\/2022\/02\/RS485_1-300x300.jpg\" alt=\"\" width=\"136\" height=\"136\" srcset=\"https:\/\/open-boat-projects.org\/wp-content\/uploads\/2022\/02\/RS485_1-300x300.jpg 300w, https:\/\/open-boat-projects.org\/wp-content\/uploads\/2022\/02\/RS485_1-150x150.jpg 150w, https:\/\/open-boat-projects.org\/wp-content\/uploads\/2022\/02\/RS485_1-768x768.jpg 768w, https:\/\/open-boat-projects.org\/wp-content\/uploads\/2022\/02\/RS485_1-12x12.jpg 12w, https:\/\/open-boat-projects.org\/wp-content\/uploads\/2022\/02\/RS485_1.jpg 1000w\" sizes=\"auto, (max-width: 136px) 100vw, 136px\" \/><\/a><\/span><\/p>\n<p><span style=\"font-size: 10pt;\">RS485<\/span><\/td>\n<td style=\"width: 16.404%; height: 24px;\"><span style=\"font-size: 10pt;\">RS485:<\/span><\/p>\n<ul>\n<li><span style=\"font-size: 10pt;\">AWAY<\/span><\/li>\n<\/ul>\n<\/td>\n<td style=\"width: 16.9771%; height: 24px;\"><span style=\"font-size: 10pt;\">1200\u2026115200 baud<br \/>\n<\/span><\/td>\n<td style=\"width: 21.9197%; height: 24px;\"><span style=\"font-size: 10pt;\">RS485 only for simple applications<\/span><\/td>\n<\/tr>\n<tr style=\"height: 24px;\">\n<td style=\"width: 19.341%; height: 24px;\"><span style=\"font-size: 10pt;\"><a href=\"https:\/\/open-boat-projects.org\/wp-content\/uploads\/2022\/11\/USB_RS232.jpg\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone wp-image-3649\" src=\"https:\/\/open-boat-projects.org\/wp-content\/uploads\/2022\/11\/USB_RS232-300x300.jpg\" alt=\"\" width=\"173\" height=\"173\" srcset=\"https:\/\/open-boat-projects.org\/wp-content\/uploads\/2022\/11\/USB_RS232-300x300.jpg 300w, https:\/\/open-boat-projects.org\/wp-content\/uploads\/2022\/11\/USB_RS232-1024x1024.jpg 1024w, https:\/\/open-boat-projects.org\/wp-content\/uploads\/2022\/11\/USB_RS232-150x150.jpg 150w, https:\/\/open-boat-projects.org\/wp-content\/uploads\/2022\/11\/USB_RS232-768x768.jpg 768w, https:\/\/open-boat-projects.org\/wp-content\/uploads\/2022\/11\/USB_RS232-1536x1536.jpg 1536w, https:\/\/open-boat-projects.org\/wp-content\/uploads\/2022\/11\/USB_RS232-12x12.jpg 12w, https:\/\/open-boat-projects.org\/wp-content\/uploads\/2022\/11\/USB_RS232.jpg 2000w\" sizes=\"auto, (max-width: 173px) 100vw, 173px\" \/><\/a><\/span><\/p>\n<p><span style=\"font-size: 10pt;\">RS232<\/span><\/td>\n<td style=\"width: 16.404%; height: 24px;\"><span style=\"font-size: 10pt;\">RS232:<\/span><\/p>\n<ul>\n<li><span style=\"font-size: 10pt;\">TX, RX, GND<\/span><\/li>\n<\/ul>\n<\/td>\n<td style=\"width: 16.9771%; height: 24px;\"><span style=\"font-size: 10pt;\">1200\u2026115200 baud<br \/>\n<\/span><\/td>\n<td style=\"width: 21.9197%; height: 24px;\"><span dir=\"ltr\" role=\"presentation\"><span style=\"font-size: 10pt;\"> RTS, DTR, DCD, RI, DSR and CTS not used on all adapters<\/span><br \/>\n<\/span><\/td>\n<\/tr>\n<tr style=\"height: 24px;\">\n<td style=\"width: 19.341%; height: 24px;\"><span style=\"font-size: 10pt;\"><a href=\"https:\/\/open-boat-projects.org\/wp-content\/uploads\/2022\/02\/Actisense_NGW-1.png\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone wp-image-2773\" src=\"https:\/\/open-boat-projects.org\/wp-content\/uploads\/2022\/02\/Actisense_NGW-1-300x173.png\" alt=\"\" width=\"191\" height=\"110\" srcset=\"https:\/\/open-boat-projects.org\/wp-content\/uploads\/2022\/02\/Actisense_NGW-1-300x173.png 300w, https:\/\/open-boat-projects.org\/wp-content\/uploads\/2022\/02\/Actisense_NGW-1-18x10.png 18w, https:\/\/open-boat-projects.org\/wp-content\/uploads\/2022\/02\/Actisense_NGW-1.png 499w\" sizes=\"auto, (max-width: 191px) 100vw, 191px\" \/><\/a><\/span><\/p>\n<p><span style=\"font-size: 10pt;\">Actisense NGT-1<\/span><\/td>\n<td style=\"width: 16.404%; height: 24px;\"><span style=\"font-size: 10pt;\">NMEA2000 (CAN):<\/span><\/p>\n<ul>\n<li><span style=\"font-size: 10pt;\">H, L, 12V, GND<\/span><\/li>\n<\/ul>\n<\/td>\n<td style=\"width: 16.9771%; height: 24px;\"><span style=\"font-size: 10pt;\">250000 bps<\/span><\/td>\n<td style=\"width: 21.9197%; height: 24px;\"><span style=\"font-size: 10pt;\">Limited NMEA2000 gateway data conversion between NMEA2000 and NMEA0183<\/span><\/td>\n<\/tr>\n<tr style=\"height: 24px;\">\n<td style=\"width: 19.341%; height: 24px;\"><span style=\"font-size: 10pt;\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone wp-image-2180\" src=\"https:\/\/open-boat-projects.org\/wp-content\/uploads\/2021\/11\/Atom_CANBUs_Kit-300x300.jpg\" alt=\"\" width=\"159\" height=\"159\" srcset=\"https:\/\/open-boat-projects.org\/wp-content\/uploads\/2021\/11\/Atom_CANBUs_Kit-300x300.jpg 300w, https:\/\/open-boat-projects.org\/wp-content\/uploads\/2021\/11\/Atom_CANBUs_Kit-150x150.jpg 150w, https:\/\/open-boat-projects.org\/wp-content\/uploads\/2021\/11\/Atom_CANBUs_Kit-768x766.jpg 768w, https:\/\/open-boat-projects.org\/wp-content\/uploads\/2021\/11\/Atom_CANBUs_Kit-12x12.jpg 12w, https:\/\/open-boat-projects.org\/wp-content\/uploads\/2021\/11\/Atom_CANBUs_Kit.jpg 792w\" sizes=\"auto, (max-width: 159px) 100vw, 159px\" \/><\/span><\/p>\n<p><span style=\"font-size: 10pt;\">M5Stack Atom CAN BUS Kit<\/span><\/td>\n<td style=\"width: 16.404%; height: 24px;\"><span style=\"font-size: 10pt;\">NMEA2000 (CAN):<\/span><\/p>\n<ul>\n<li><span style=\"font-size: 10pt;\">H,L GND<\/span><\/li>\n<\/ul>\n<\/td>\n<td style=\"width: 16.9771%; height: 24px;\"><span style=\"font-size: 10pt;\">250000 bps<\/span><\/td>\n<td style=\"width: 21.9197%; height: 24px;\"><span style=\"font-size: 10pt;\">open-source <a href=\"https:\/\/open-boat-projects.org\/en\/nmea2000-gateway-mit-m5stack-atom\/\">NMEA2000 gateway<\/a><\/span><\/td>\n<\/tr>\n<tr style=\"height: 24px;\">\n<td style=\"width: 19.341%; height: 24px;\"><span style=\"font-size: 10pt;\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone wp-image-3658\" src=\"https:\/\/open-boat-projects.org\/wp-content\/uploads\/2022\/11\/USB_GPS-300x300.jpg\" alt=\"\" width=\"150\" height=\"150\" srcset=\"https:\/\/open-boat-projects.org\/wp-content\/uploads\/2022\/11\/USB_GPS-300x300.jpg 300w, https:\/\/open-boat-projects.org\/wp-content\/uploads\/2022\/11\/USB_GPS-150x150.jpg 150w, https:\/\/open-boat-projects.org\/wp-content\/uploads\/2022\/11\/USB_GPS-12x12.jpg 12w, https:\/\/open-boat-projects.org\/wp-content\/uploads\/2022\/11\/USB_GPS.jpg 361w\" sizes=\"auto, (max-width: 150px) 100vw, 150px\" \/><\/span><\/p>\n<p><span style=\"font-size: 10pt;\">USB GPS stick<\/span><\/td>\n<td style=\"width: 16.404%; height: 24px;\"><span style=\"font-size: 10pt;\">NMEA0183 via RS232<\/span><\/td>\n<td style=\"width: 16.9771%; height: 24px;\"><span style=\"font-size: 10pt;\">9600 bauds<br \/>\n<\/span><\/td>\n<td style=\"width: 21.9197%; height: 24px;\"><span style=\"font-size: 10pt;\">Powerful GPS receiver<\/span><\/td>\n<\/tr>\n<tr style=\"height: 24px;\">\n<td style=\"width: 19.341%; height: 24px;\"><span style=\"font-size: 10pt;\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone wp-image-3657\" src=\"https:\/\/open-boat-projects.org\/wp-content\/uploads\/2022\/11\/USB_GPS2-300x300.jpg\" alt=\"\" width=\"170\" height=\"170\" srcset=\"https:\/\/open-boat-projects.org\/wp-content\/uploads\/2022\/11\/USB_GPS2-300x300.jpg 300w, https:\/\/open-boat-projects.org\/wp-content\/uploads\/2022\/11\/USB_GPS2-150x150.jpg 150w, https:\/\/open-boat-projects.org\/wp-content\/uploads\/2022\/11\/USB_GPS2-12x12.jpg 12w, https:\/\/open-boat-projects.org\/wp-content\/uploads\/2022\/11\/USB_GPS2.jpg 600w\" sizes=\"auto, (max-width: 170px) 100vw, 170px\" \/><\/span><\/p>\n<p><span style=\"font-size: 10pt;\">USB GPS Mouse<\/span><\/td>\n<td style=\"width: 16.404%; height: 24px;\"><span style=\"font-size: 10pt;\">NMEA0183 via RS232<\/span><\/td>\n<td style=\"width: 16.9771%; height: 24px;\"><span style=\"font-size: 10pt;\">9600 bauds<br \/>\n<\/span><\/td>\n<td style=\"width: 21.9197%; height: 24px;\"><span style=\"font-size: 10pt;\">Remote GPS receiver for indoor mounting<\/span><\/td>\n<\/tr>\n<tr style=\"height: 24px;\">\n<td style=\"width: 19.341%; height: 24px;\"><span style=\"font-size: 10pt;\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone wp-image-3656\" src=\"https:\/\/open-boat-projects.org\/wp-content\/uploads\/2022\/11\/USB_GPS3.jpg\" alt=\"\" width=\"151\" height=\"151\" srcset=\"https:\/\/open-boat-projects.org\/wp-content\/uploads\/2022\/11\/USB_GPS3.jpg 225w, https:\/\/open-boat-projects.org\/wp-content\/uploads\/2022\/11\/USB_GPS3-150x150.jpg 150w, https:\/\/open-boat-projects.org\/wp-content\/uploads\/2022\/11\/USB_GPS3-12x12.jpg 12w\" sizes=\"auto, (max-width: 151px) 100vw, 151px\" \/><\/span><\/p>\n<p><span style=\"font-size: 10pt;\">USB GPS receiver<\/span><\/td>\n<td style=\"width: 16.404%; height: 24px;\"><span style=\"font-size: 10pt;\">NMEA0183 via RS232<\/span><\/td>\n<td style=\"width: 16.9771%; height: 24px;\"><span style=\"font-size: 10pt;\">9600 bauds<br \/>\n<\/span><\/td>\n<td style=\"width: 21.9197%; height: 24px;\"><span style=\"font-size: 10pt;\">Remote GPS receiver for outdoor installation<\/span><\/td>\n<\/tr>\n<tr style=\"height: 24px;\">\n<td style=\"width: 19.341%; height: 24px;\"><span style=\"font-size: 10pt;\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone wp-image-3655\" src=\"https:\/\/open-boat-projects.org\/wp-content\/uploads\/2022\/11\/USB_DVBT-300x300.jpg\" alt=\"\" width=\"180\" height=\"180\" srcset=\"https:\/\/open-boat-projects.org\/wp-content\/uploads\/2022\/11\/USB_DVBT-300x300.jpg 300w, https:\/\/open-boat-projects.org\/wp-content\/uploads\/2022\/11\/USB_DVBT.jpg 1024w, https:\/\/open-boat-projects.org\/wp-content\/uploads\/2022\/11\/USB_DVBT-150x150.jpg 150w, https:\/\/open-boat-projects.org\/wp-content\/uploads\/2022\/11\/USB_DVBT-768x768.jpg 768w, https:\/\/open-boat-projects.org\/wp-content\/uploads\/2022\/11\/USB_DVBT-12x12.jpg 12w\" sizes=\"auto, (max-width: 180px) 100vw, 180px\" \/><\/span><\/p>\n<p><span style=\"font-size: 10pt;\">USB DVBT stick<\/span><\/td>\n<td style=\"width: 16.404%; height: 24px;\"><span style=\"font-size: 10pt;\">SDR receiver 150 kHz\u20261 GHz<\/span><\/td>\n<td style=\"width: 16.9771%; height: 24px;\"><\/td>\n<td style=\"width: 21.9197%; height: 24px;\"><span style=\"font-size: 10pt;\">Suitable for AIS and radio reception<\/span><\/td>\n<\/tr>\n<tr>\n<td style=\"width: 19.341%;\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone wp-image-3666\" src=\"https:\/\/open-boat-projects.org\/wp-content\/uploads\/2022\/11\/USB_dAISy-300x222.webp\" alt=\"\" width=\"146\" height=\"108\" srcset=\"https:\/\/open-boat-projects.org\/wp-content\/uploads\/2022\/11\/USB_dAISy-300x222.webp 300w, https:\/\/open-boat-projects.org\/wp-content\/uploads\/2022\/11\/USB_dAISy-16x12.webp 16w, https:\/\/open-boat-projects.org\/wp-content\/uploads\/2022\/11\/USB_dAISy.webp 470w\" sizes=\"auto, (max-width: 146px) 100vw, 146px\" \/><\/p>\n<p><span style=\"font-size: 10pt;\">USB AIS receiver<br \/>\n<\/span><\/td>\n<td style=\"width: 16.404%;\"><span style=\"font-size: 10pt;\">NMEA0183 via RS232<br \/>\n<\/span><span style=\"font-size: 10pt;\">A (161.975MHz) and B (162.025MHz)<\/span><\/td>\n<td style=\"width: 16.9771%;\"><span style=\"font-size: 10pt;\">38400 bauds<br \/>\n<\/span><\/td>\n<td style=\"width: 21.9197%;\"><span style=\"font-size: 10pt;\">Powerful AIS receiver with NMEA0183 output<br \/>\n<\/span><\/td>\n<\/tr>\n<tr>\n<td style=\"width: 19.341%;\"><span style=\"font-size: 10pt;\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone wp-image-3654\" src=\"https:\/\/open-boat-projects.org\/wp-content\/uploads\/2022\/11\/USB_WiFi_Edimax.jpeg\" alt=\"\" width=\"88\" height=\"70\" srcset=\"https:\/\/open-boat-projects.org\/wp-content\/uploads\/2022\/11\/USB_WiFi_Edimax.jpeg 252w, https:\/\/open-boat-projects.org\/wp-content\/uploads\/2022\/11\/USB_WiFi_Edimax-15x12.jpeg 15w\" sizes=\"auto, (max-width: 88px) 100vw, 88px\" \/><\/span><\/p>\n<p><span style=\"font-size: 10pt;\">USB WiFi dongle<\/span><\/td>\n<td style=\"width: 16.404%;\"><span style=\"font-size: 10pt;\">WiFi 2.4GHz 802bgn<\/span><\/td>\n<td style=\"width: 16.9771%;\"><span style=\"font-size: 10pt;\">150Mbps<\/span><\/td>\n<td style=\"width: 21.9197%;\"><span style=\"font-size: 10pt;\">Can be used for a second WiFi network on the Raspi<\/span><\/td>\n<\/tr>\n<tr>\n<td style=\"width: 19.341%;\"><span style=\"font-size: 10pt;\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone wp-image-3659\" src=\"https:\/\/open-boat-projects.org\/wp-content\/uploads\/2022\/11\/USB-Mini_Speicher.jpg\" alt=\"\" width=\"112\" height=\"93\" srcset=\"https:\/\/open-boat-projects.org\/wp-content\/uploads\/2022\/11\/USB-Mini_Speicher.jpg 300w, https:\/\/open-boat-projects.org\/wp-content\/uploads\/2022\/11\/USB-Mini_Speicher-14x12.jpg 14w\" sizes=\"auto, (max-width: 112px) 100vw, 112px\" \/><\/span><\/p>\n<p><span style=\"font-size: 10pt;\">USB mini memory 64 GB<\/span><\/td>\n<td style=\"width: 16.404%;\"><span style=\"font-size: 10pt;\">Memory stick 64 GB<\/span><\/td>\n<td style=\"width: 16.9771%;\"><span style=\"font-size: 10pt;\">130MB\/s<\/span><\/td>\n<td style=\"width: 21.9197%;\"><span style=\"font-size: 10pt;\">Useful for nautical charts and backups<\/span><\/td>\n<\/tr>\n<tr>\n<td style=\"width: 19.341%;\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-3669\" src=\"https:\/\/open-boat-projects.org\/wp-content\/uploads\/2022\/11\/USB_O-Charts_Dongle.jpg\" alt=\"\" width=\"200\" height=\"125\" srcset=\"https:\/\/open-boat-projects.org\/wp-content\/uploads\/2022\/11\/USB_O-Charts_Dongle.jpg 200w, https:\/\/open-boat-projects.org\/wp-content\/uploads\/2022\/11\/USB_O-Charts_Dongle-18x12.jpg 18w\" sizes=\"auto, (max-width: 200px) 100vw, 200px\" \/><\/p>\n<p><span style=\"font-size: 10pt;\">O Charts dongle<\/span><\/td>\n<td style=\"width: 16.404%;\"><span style=\"font-size: 10pt;\">Copy protection for O-Charts nautical charts<br \/>\n<\/span><\/td>\n<td style=\"width: 16.9771%;\"><span style=\"font-size: 10pt;\">\u00a0<\/span><\/td>\n<td style=\"width: 21.9197%;\"><span style=\"font-size: 10pt;\">Usable under AVnav and OpenCPN<br \/>\n<\/span><span style=\"font-size: 10pt;\">Transferable copy protection dongle for various applications and operating systems<\/span><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>&nbsp;<\/p>\n<p>If systems already exist that can transmit bus data via Ethernet, they can be connected via TCP or UDP sockets via LAN cable or via WiFi. These would be, for example, the following open source WiFi sensors for NMEA0183:<\/p>\n<ul>\n<li><a href=\"https:\/\/open-boat-projects.org\/en\/diy-windsensor\/\">WiFi 1000 wind sensor<\/a><\/li>\n<li><a href=\"https:\/\/open-boat-projects.org\/en\/windsensor-yachta\/\">Yachta wind sensor<\/a><\/li>\n<li><a href=\"https:\/\/github.com\/jukolein\/NMEA0183-Windsensor\">Wind sensor Jukolein<\/a><\/li>\n<li><a href=\"https:\/\/open-boat-projects.org\/en\/diy-motordiagnose\/\">Engine diagnosis<\/a><\/li>\n<li><a href=\"https:\/\/open-boat-projects.org\/en\/diy-ultraschall-fuellstandsmessung\/\">level sensor<\/a><\/li>\n<li><a href=\"https:\/\/open-boat-projects.org\/en\/diy-kielsensor\/\">Keel sensor<\/a><\/li>\n<\/ul>\n<p>Similar open source projects also exist for NMEA2000:<\/p>\n<ul>\n<li><a href=\"https:\/\/open-boat-projects.org\/en\/magnetix-ein-digitaler-kompass-mit-nmea2000\/\">Magnetic compass Magnetix<\/a><\/li>\n<li><a href=\"https:\/\/open-boat-projects.org\/en\/ventus-w132\/\">Wind sensor W132<\/a><\/li>\n<\/ul>\n<h2>Sensors and bus systems at the GPIO port<\/h2>\n<p>Typical marine sensors are connected via the buses described above. If you want to integrate special sensors, you can connect the sensors via pins on the GPIO connector (40-pin pin strip). The GPIO port has many plug-in contacts to which some other bus systems that are typically not used in the boat area are brought out.<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone wp-image-2747 size-full\" src=\"https:\/\/open-boat-projects.org\/wp-content\/uploads\/2022\/01\/GPIO_Raspi-e1643653051627.png\" alt=\"\" width=\"598\" height=\"307\" srcset=\"https:\/\/open-boat-projects.org\/wp-content\/uploads\/2022\/01\/GPIO_Raspi-e1643653051627.png 598w, https:\/\/open-boat-projects.org\/wp-content\/uploads\/2022\/01\/GPIO_Raspi-e1643653051627-300x154.png 300w, https:\/\/open-boat-projects.org\/wp-content\/uploads\/2022\/01\/GPIO_Raspi-e1643653051627-18x9.png 18w\" sizes=\"auto, (max-width: 598px) 100vw, 598px\" \/><\/p>\n<p>Fig. GPIO port<\/p>\n<p>These buses are intended for electronic circuits to connect ICs and sensors to microcontrollers. They cannot be used to bridge lengths that are too great (max. 1..2 m). If shielded cables are used, longer lengths can also be bridged. In contrast to the boat bus systems, the electronic bus systems are not fault-tolerant and usually only work with low signal levels and are correspondingly sensitive to interference. Below is a list of the bus systems with possible sensors.<\/p>\n<ul>\n<li><strong>I2C<\/strong> (bus length 1\u20262 m)\n<ul>\n<li>BME280 (temperature, humidity, air pressure)<\/li>\n<li>BMP280 (temperature, air pressure)<\/li>\n<li>HTU21 ((temperature, humidity)<\/li>\n<li>MPU9250 (gyrometer, accelerometer, magnetometer)<\/li>\n<li>MPU9255 (Gyrometer, Accelerometer, Magnetometer)<\/li>\n<li>Additional displays (text and dot matrix displays)<\/li>\n<\/ul>\n<\/li>\n<li><strong>SPI<\/strong> (bus length 0.5 m)\n<ul>\n<li>MCP2515 CAN bus controller for NMEA2000<\/li>\n<\/ul>\n<\/li>\n<li><strong>1Wire<\/strong> (bus length up to 10 m)\n<ul>\n<li>DS18B20 (temperature)<\/li>\n<\/ul>\n<\/li>\n<li><strong>Serial<\/strong> (bus length up to 10 m)\n<ul>\n<li>StromPi UPS status<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<p>At this point, however, it must be mentioned that the GPIO port is quite sensitive and if you connect the port incorrectly, the Raspi can also die. If you want to connect any sensors to the GPIO port, you should find out exactly how to do it beforehand. This is a helpful website for this <a href=\"https:\/\/www.elektronik-kompendium.de\/sites\/raspberry-pi\/\" target=\"_blank\" rel=\"noopener\">Electronics Compendium<\/a> and the <a href=\"https:\/\/openplotter.readthedocs.io\/en\/2.x.x\/\" target=\"_blank\" rel=\"noopener\">Documentation of OpenPlotter<\/a>.<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone wp-image-2749\" src=\"https:\/\/open-boat-projects.org\/wp-content\/uploads\/2022\/01\/Raspi_DS18B20-300x180.png\" alt=\"\" width=\"600\" height=\"360\" srcset=\"https:\/\/open-boat-projects.org\/wp-content\/uploads\/2022\/01\/Raspi_DS18B20-300x180.png 300w, https:\/\/open-boat-projects.org\/wp-content\/uploads\/2022\/01\/Raspi_DS18B20-768x461.png 768w, https:\/\/open-boat-projects.org\/wp-content\/uploads\/2022\/01\/Raspi_DS18B20-18x12.png 18w, https:\/\/open-boat-projects.org\/wp-content\/uploads\/2022\/01\/Raspi_DS18B20.png 800w\" sizes=\"auto, (max-width: 600px) 100vw, 600px\" \/><\/p>\n<p>Fig. Wiring example for the 1Wire bus with 3 temperature sensors (OpenPlotter)<\/p>","protected":false},"excerpt":{"rendered":"<p>First of all, a few important tips that you should definitely pay attention to. Raspberry Pi The Raspberry Pi is primarily used as the hardware basis for AVnav and OpenPlotter. It is a microcomputer in credit card format. It is available in several variants, although we will focus exclusively on the Raspberry Pi 4B here. Of the older models, only the Raspberry Pi\u2026 <a href=\"https:\/\/open-boat-projects.org\/en\/hardwarebasis-avnav-openplotter\/\" class=\"more-link\">Read more <span class=\"screen-reader-text\">Hardware basis for AVnav and OpenPlotter<\/span><\/a><\/p>","protected":false},"author":2,"featured_media":0,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"footnotes":""},"categories":[38,41,40,37,44],"tags":[],"class_list":["post-3630","page","type-page","status-publish","hentry","category-about","category-opendata","category-openhardware","category-projects","category-sharedknowledge"],"_links":{"self":[{"href":"https:\/\/open-boat-projects.org\/en\/wp-json\/wp\/v2\/pages\/3630","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/open-boat-projects.org\/en\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/open-boat-projects.org\/en\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/open-boat-projects.org\/en\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/open-boat-projects.org\/en\/wp-json\/wp\/v2\/comments?post=3630"}],"version-history":[{"count":54,"href":"https:\/\/open-boat-projects.org\/en\/wp-json\/wp\/v2\/pages\/3630\/revisions"}],"predecessor-version":[{"id":4787,"href":"https:\/\/open-boat-projects.org\/en\/wp-json\/wp\/v2\/pages\/3630\/revisions\/4787"}],"wp:attachment":[{"href":"https:\/\/open-boat-projects.org\/en\/wp-json\/wp\/v2\/media?parent=3630"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/open-boat-projects.org\/en\/wp-json\/wp\/v2\/categories?post=3630"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/open-boat-projects.org\/en\/wp-json\/wp\/v2\/tags?post=3630"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}