NMEA Docs
They’re generally paid, however the following is available online:
NMEA 2000 Basics
250kbps CAN Bus
29bit identifier (ISO11783 standard)
8 byte data field
Open Source Libraries
The NMEA2000 library by Timo Lappalainen basically makes NMEA2000 possible for the masses (it’s a big and complex standard!):
https://github.com/ttlappalainen/NMEA2000
USEFUL?
We benefit hugely from resources on the web so we decided we should try and give back some of our knowledge and resources to the community by opening up many of our company’s internal notes and libraries through mini sites like this. We hope you find the site helpful.
Please feel free to comment if you can add help to this page or point out issues and solutions you have found, but please note that we do not provide support on this site. If you need help with a problem please use one of the many online forums.