using a ELM327 WIFI interface
IP 192.168.0.10, port 35000
- 0100 list valid commands
- 010C return motor RPM (hex, needs to be divided by 4)
https://learn.sparkfun.com/tutorials/obd-ii-uart-hookup-guide/obd-commands https://en.wikipedia.org/wiki/OBD-II_PIDs
TX 0100
RX 41 00 BF 9F F9 91
RX 41 00 80 00 00 00
TX 010c
RX 41 0C 0B 30 ;this is 716rpm