4 ms·
This is cool! I’m currently trying to update the CAN (early Ibus) setup I have connected to E36’s CD changer port. I’m able to receive messages just fine on an
by tehwebguy 4y ago
This is cool! I’m currently trying to update the CAN (early Ibus) setup I have connected to E36’s CD changer port.
I’m able to receive messages just fine on an Arduino via MCP2025 using ian332isport’s IBus library but I can’t send messages. Just tried using the apparently better Melexis TH3122.4 instead of the MCP but other than sending Vreg power it doesn’t seem to work (and instantly heats up to dangerous temperatures).
If anyone happens to be working on something similar hit me up!
- llamajams 4y agoAre you using the right transceiver? Looks like MCP202 is for the LIN bus which is a completely different physical standard. There are also multiple different can standards, and I don't think Arduino can support the higher speed versions.
- tehwebguy 4y agoFrankly I am not sure! My car’s bus is only between radio & CD, it seems a little bit less standard and most of the discussions I see are about the next generation (E46) that have loads of other components connected.
- llamajams 4y agoGot a diagram of your setup?
- maxerickson 4y agoIt's not a 'CAN' can. https://maakbaas.com/bluetooth-cd-changer-emulator/logs/from-idea-to-prototype/ https://maakbaas.com/bluetooth-cd-changer-emulator/logs/from...
- touchy 4y agoOh the melexis... I had the heat up issue when powering from both USB and the 12v car supply. I snipped the 5v power from the USB line and that allowed me to serial into the teensy and read data. Iirc the melexis supplys 5v from one of it's pins.