Strain Gauges Wiring Guide - AL-ExtremeError/N4M_Auto_Leveler GitHub Wiki
Strain Gauges Wiring Guide
Key Notes
- HX711 requires 3.3V power, while RP2040 Zero uses 5V → Logic Level Converter required.
- Connect strain gauge/load cell to HX711's A+, A-, E+, E- pins.
- Ensure strain gauge is compatible with HX711 (3.3V, 4-wire configuration).
Pin-Out Mapping
| Strain Gauge Color | HX711 Pin | Description |
|---|---|---|
| Red | E+ | Excitation Positive |
| Black | E- | Excitation Negative (Ground) |
| Yellow | A- | Signal Negative |
| White | A+ | Signal Positive |
Extended Wiring Chart
(Depending on your wire, the below is based on the wire from the amazon link provided in the hardware section)
| Strain Gauge | Extended Cable | HX711 Pin |
|---|---|---|
| Red | Red | RED / E+ |
| Black | Black | BLK / E- |
| Yellow | Blue | WHT / A- |
| White | Green | GRN / A+ |