ESP32 OBD-II CAN
222 USD It is necessary to implement the retrieval of fuel level or fuel consumption from the car via ESP32 in two ways:
1. OBD-II via ELM327 (
Connect ESP32 to the ELM327 Wi-Fi adapter (TCP).
Implement the sending of standard OBD-II PID commands:
010C – RPM
010D – Speed
012F – Fuel Level (if available)
015E/015F – Fuel Rate (if available)
Receive and parse responses in the format 41 XX YY.
Return data in the ESP32 structure (I will integrate it into the system later).
2. Direct reading of raw CAN
Connect ESP32 via CAN transceiver (SN65HVD230 / MCP2551).
Log raw CAN packets.
Determine CAN-ID and bytes where:
fuel level
fuel consumption / fuel rate
Implement stable reading of required CAN-ID in real time.
Transmit the recalculation formula in % or liters.
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Якою є кінцева мета вашого проекту?
ESP32 – мабуть, не найкраща система для роботи з навантаженим CAN, тому що все робиться на програмному рівні.
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Апаратний CAN (TWAI) є у багатьох моделей ESP32.
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