There are different HX711 module on the market. Notably the Sparkfun version and this brand-less version. Note that pin arrangement is not identical.
I choose this brand-less option simply because of lower cost.
Data Sheet of Avia Semiconductor HX711
Resolution: 24bit
**Measurement frequency:**10Hz / 60Hz (selectable)
Between Arduino and HX711 module:
| Label on module | Arduino Pin | Notes |
|---|---|---|
| VCC | +5V | Power |
| GND | GND | Power |
| DT | Software SPI (Any IO Pin) | SPI Data |
| SCK | Software SPI (Any IO Pin) | SPI Clock |
Between HX711 module and load cell:
| Label on module | Load Cell Wire | Cable Color (most of the time) |
|---|---|---|
| E+ | Excitation + | Red |
| E- | Excitation - | Black |
| A- | Amplifier - | Green |
| A+ | Amplifier + | White |
| B- | Not Connected | |
| B+ | Not Connected | |
| GND | Shield | Wire or foil shield |