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The software part is a pretty minimum implementation of the KWP2000 via K-LINE as used by the EBC430 EBC. The supported Service IDs are:
| Function | Usage |
|---|---|
| StartCommunication | start a KWP2000 session |
| ReadECUIdentification | ECU details, nothing new here - same as listed in the Lotus Service Manual |
| ReadDataByLocalId | battery voltage, wheel speeds (not implemented, because my car is not moving atm) |
| ReadDiagnosticTroubleCodeByStatus | read DTC codes and status reasons |
| ClearDiagnosticInformationService | clear and DTCs |
| InputOutputControlByLocalId | control the valves, pump, relay |
So with that you can establish communication with the ECU, get software/hardware versions, battery voltage (wheels speeds later on), read and clear DTCs, and most importantly control the valves, pump and valve relay to aid with bleeding.
You need to solder up the little ESP8266 based adapter (or put it on breadboard if you are adventurous. A proven PCB design and circuit is included in the ./pcb folder. It was made with KiCAD (www.kicad.org)
Not much - i didnt have one, so i had to roll my own - the most notible difference is that the KLINE line has to be on PIN #12 of the OBD connector (usualy it would be Pin #7) And you wont have a GUI to control stuff.
The project is based on PLATFORM.IO - download VS Code and install platform IO (https://platformio.org/)
see KiCAD