I need help whit my project. I’m trying to make RPM shift light for my Golf MK4 TDI 2003. I used an Arduino Nano and CAN-BUS module (Joy-it SBC-CAN01 CAN vmesnik 1 kos Primerno za: Arduino, Banana Pi, Raspberry Pi, Cubieboard | Conrad.si) to read the data from OBD2 port in my car. My CAN-BUS module has this ON OFF pins and I don’t know what it does, it uses MCP2515.
I tried using this program: GitHub - sandeepmistry/arduino-OBD2: An Arduino library for reading OBD-II data from your car over CAN bus
And it did not work. The program ran but there was no data. I tried it on other cars, and it didn’t work either. (The code was set up for 16.000hz which my board has)
I also looked at wiring the Arduino to w-terminal on the alternator, but it is too hard to reach and I don’t want to disassemble it.
I am using addressable LEDs and a voltage regulator to power the circuit from 12V pins on OBD2.