ESP32-S3 OBD-II K-Line reader: KWP2000 / ISO 9141-2 live engine data, full PID vehicle profile and DTC read/clear on a round touch screen (L9637D, ESP-IDF, LVGL). No ELM327.
embedded esp32 automotive esp-idf dtc obd2 waveshare ecu kwp2000 iso9141 obd-ii lvgl k-line car-diagnostics diy-electronics esp32-s3 obd-scanner iso14230 l9637d elm327-alternative
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Updated
Nov 13, 2026 - C