# FilamentGauger

PlatformIO firmware for the Guition `JC8048W550(C)` display with an `HX711` load-cell amplifier.

Pins:
- `HX711 SCK -> IO17`
- `HX711 DOUT -> IO18`

Important:
- On this display family `IO18` is normally used by the capacitive touch interrupt.
- In this firmware the touch controller stays enabled, but its interrupt pin is moved to `GPIO_NUM_NC`, so touch works in polling mode and `IO18` becomes available for `HX711`.

Default calibration flow:
1. Leave the platform empty.
2. Tap `Tare`.
3. Put a `100 g` reference weight on the platform.
4. Tap `Cal 100 g`.

Serial commands:
- `tare`
- `cal 100`
- `scale 432.1`
- `reset`
- `status`

Build:
```bash
platformio run
```