open source | open hardware | open data
First of all, a few important notes that you should definitely pay attention to.
The main hardware base for AVnav and OpenPlotter is the Raspberry Pi. 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.… Continue reading
I don't own any of the devices and haven't tested any myself. The features listed here are manufacturer specifications. The beginning of the overview was created in sailing forum.
Unfortunately, posts there can no longer be edited at some point. Additions, improvements, comments, testimonials, etc. can be posted in the forum. I'll try to add them here.
First of all, a few important notes that you should definitely pay attention to.
Fig.: B&G Zeuss with NMEA2000 connection technology (SVB)
In the marine sector, a large number of different bus systems are used for data transmission between sensors and display devices. Depending on the manufacturer, the bus systems use a different hardware basis. The systems are often not compatible with each other and require special converters or gateways for data exchange between the bus systems.… Continue reading
Garmin GPSmap526 (Garmin)
Garmin is one of the few commercial manufacturers that also allow the use of public free maps on their devices. This makes it possible to also provide older devices with up-to-date map material when support has expired. Garmin offers a variety of navigation devices that can be used on-road for street navigation as well as off-road for tracking.… Continue reading
Fig.: Mobile Atlas Creator (MOBAC)
mobile A.tlas Creator (MOBAC) is a Java open source program that provides offline maps for various navigation devices. As a source for an offline map, Mobile Atlas Creator can use a large number of different online maps, such as OpenStreetMap-based maps and other online map providers. In addition to pure navigation charts for vehicles on land, charts for watercraft are also offered.… Continue reading
Fig.: HWT901B-RS232 9-axis sensor
The Chinese company WIT motion sells various sensor modules on the Internet. In addition to 3-axis, 6-axis and 9-axis modules, pure magnetometers are also offered in a wide variety of designs. A large number of interfaces are supported such as:
A particularly interesting sensor is the HWT901B-RS232. This is a 9-axis sensor as a military variant with the following properties:
The idea of this AVnav plugin is to display an instrument that contains all the basic information needed for sailing. With the possibility of showing this display directly on the map at the boat position, the sailor has all the information at a glance. The laylines tell you the quickest bearing to a waypoint upwind, and when they are shown on the chart you can follow those lines.… Continue reading
Fig. Shelly 1
Anyone who anchors is obliged to set an anchor light so that you can be recognized on the open water surface in the dark. Typically, the light is switched on manually at dusk and off again at sunrise. There is no problem switching it on. But often you forget to switch it off and the anchor light is then permanently on and consumes electricity unnecessarily.… Continue reading
Fig. Lilygo T-Watch 2020 (Lilygo)
Jan Dytrych has started a software project to be able to display data from SignalK and receive alarms with a smart watch. Not just any common clock under Android is used as a smart watch. He uses the smart watch Liligo T Watch 2020. The special feature of this clock is that it has an ESP32 installed as a processor and can be controlled via the Arduino IDE or… Continue reading
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I've always found the idea of not only showing the course on my plotter when the boat is moving, but also when it's bobbing along quietly, I've always found it exciting.
After searching the I-Net for different manufacturers, it quickly became clear that I might not need an e-compass on board at current prices.… Continue reading