My BMW F20 116i doesn't have a temperature gauge. So I made one myself. The hardware shopping list is as follows: ELM327 Bluetooth OBD2 adapter ESP32 Devkit v1 Small 128*64 OLED display Some wires, ...
The basis is that this kit gets OBD2 data from the car, calculates what gear you're in by matching rpm and speed and then sends this on as fake OBD "speed" data to any OBD head up display (HUD). So ...
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