HX711PY

Updated Python library for the HX711 load cell amplifier and Raspberry Pi 5

Installation

You can install this library from PyPI. To install it for the current user on your Raspberry Pi, use the following command:

pip install JoyIT-hx711py

Initial Calibration

1. Place nothing on the scale, run the calibration.py and record the output. That is the offset.
2. Place a known weight like 1kg(1000g) on the scale, record the output as weight.
3. Calculate the ratio

ratio = (w - offset) / 1000

1000 being the 1000 grams or the weight previously placed on scale

Edit the example.py file with the offset and ratio

def setup():
    """
    code run once
    """
    hx.set_offset(`Place offset here`)
    hx.set_scale(`Place ratio here`)
    hx.tare()
    pass

Resources

Source code adapted from:
https://gist.github.com/underdoeg/98a38b54f889fce2b237

Documentation adapted from:
https://github.com/aguegu/ardulibs/tree/master/hx711

HX711 Datasheet (EN):
http://image.dfrobot.com/image/data/SEN0160/hx711_english.pdf