Hi,
TPMS sensors on my 2018 RAV4 are acting up. Also I was considering get ODB2 data from my cars to HA for while now.
Any experience in reading TPMS sensors data from ECU using this gadget?
Thank you.
An ESP32 with a CAN interface might do the trick. Already supports the BLE your TPMS uses. Read the data from your TPMS direct. Maybe identify where the TPMS problem is - batteries, BLE pairing, etc. Speak with your ECU direct over CAN - it already speaks OBD-II via PIDs.
You should be able to speak and listen to each ecosystem via known protocols using appropriate documented messages. You challenge will be to unearth those protocol documents. Good luck! You will have better luck on motoring forums for your vehicle, or a OBD-II diagnostic unit your local mechanic should have.
Are you going to have a portable, vehicle based HomeAssistant server to collate all this data, or stream it live over a mobile data connection to a central location? Be aware of data volumes - they can be huge for live data.
Sorry for liberal use of TLA’s (three letter acronyms).
Does any of this appear relevant?
Yes, very interesting. And steep learning curve. I’ll come back with questions…