HX711 load-cell ADC
HX711 breakout · 24-bit ADC with a gain-128 bridge amplifier · supplies the bridge excitation (E+ ≈ 4.3 V from 5 V) · reads A+ − A− (±20 mV full scale at gain 128) · two-wire DT/SCK interface, 10 samples per second
Try it on the benchThe lab drops it on an empty bench and opens its datasheet card.
Typical part: Avia HX711 module
Pins
- E+
- E−
- A−
- A+
- VCC
- GND
- DT
- SCK
Ratings and limits
| Resolution | 24 bit |
|---|---|
| Gain | 128 (±20 mV) or 64 |
| Rate | 10 or 80 samples/s |
| Supply | 2.6–5.5 V |
How to use it
Red to E+, black to E−, green to A+, white to A−. In code: tare() with nothing on the scale, then set_scale() with a known weight; get_units() reads in your units.