Python library for the HX711 load cell amplifier and Raspberry Pi
- Place nothing on the scale, run the calibration.py and record the output. That is the offset.
- Place a known weight like 1kg(1000g) on the scale, record the output as weight.
- 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
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