Introduction
CircuitPython driver for the HX711 24-bit ADC for Load Cells / Strain Gauges
Dependencies
This driver depends on:
Please ensure all dependencies are available on the CircuitPython filesystem. This is easily achieved by downloading the Adafruit library and driver bundle or individual libraries can be installed using circup.
Installing from PyPI
On supported GNU/Linux systems like the Raspberry Pi, you can install the driver locally from PyPI. To install for current user:
pip3 install adafruit-circuitpython-hx711
To install system-wide (this may be required in some cases):
sudo pip3 install adafruit-circuitpython-hx711
To install in a virtual environment in your current project:
mkdir project-name && cd project-name
python3 -m venv .venv
source .env/bin/activate
pip3 install adafruit-circuitpython-hx711
Installing to a Connected CircuitPython Device with Circup
Make sure that you have circup
installed in your Python environment.
Install it with the following command if necessary:
pip3 install circup
With circup
installed and your CircuitPython device connected use the
following command to install:
circup install adafruit_hx711
Or the following command to update an existing version:
circup update
Usage Example
import time
import board
import digitalio
from adafruit_hx711.hx711 import HX711
from adafruit_hx711.analog_in import AnalogIn
data = digitalio.DigitalInOut(board.D2)
data.direction = digitalio.Direction.INPUT
clock = digitalio.DigitalInOut(board.D3)
clock.direction = digitalio.Direction.OUTPUT
hx711 = HX711(data, clock)
channel_a = AnalogIn(hx711, HX711.CHAN_A_GAIN_128)
while True:
print(f"Reading: {channel_a.value}")
time.sleep(1)
Documentation
API documentation for this library can be found on Read the Docs.
For information on building library documentation, please check out this guide.
Contributing
Contributions are welcome! Please read our Code of Conduct before contributing to help this project stay welcoming.
Table of Contents
Adafruit HX711 Learn Guide <https://learn.adafruit.com/adafruit-hx711-24-bit-adc>
Adafruit HX711 24-bit ADC <https://www.adafruit.com/product/5974>