quick question, modifying and getting ready to test a diybms setup with my victron system. I have a general understanding of CAN bus from my involvement with N2K. However, I never had to check the voltage level that has to be supported by the system. So does VenusOS (rpi or CCGX) expect 3V3 or 5V transceiver chips to communicate? Can I get away with 3V3? It's for a bus between the BMS and the VenusOS.
cheers
V.
answering my own question!
happy with 5V as communicated from diyBMS. Didn't try 3V3, may do so at a later point.
Now stuck with sorting out two can busses running on the same raspberry (one for N2K and one for the LifePO4 BMS)
cheers
V.
I suspect you are talking about the signal between the Can HAT on the RPI and the RPI itself. The can standard is for 12v signal on the wire.
If you are and it is this jumper in the picture
Then suggest you read the WIKI for the Can HAT, as it is the logic level switch and if set incorrectly will likely damage the RPI. See this snapshot from the WIKI
Just do a search in google for "raspberry pi gpio logic level"
