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Redline Gauge
FirmwarePut live engine gauges on a small ESP32 screen
Redline Gauge turns an ESP32 touchscreen into an instrument display for an ELM327 Bluetooth Classic adapter. Its OBD mode polls values such as engine speed, road speed, temperature and adapter voltage.
Flash a supported Cheap Yellow Display board and choose OBD mode after checking the supplied simulator. The current firmware uses Bluetooth Classic, so an ESP32-S3 or a BLE-only adapter is not a substitute; its license permits noncommercial use only.
- See live engine and battery readings
- Standalone touchscreen gauges
- Offline simulator for display setup
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