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Mar 28, 2018
Jun 6, 2016
Mar 20, 2018

HX711 for Raspbery Py


Quick code credited to underdoeg's Gist HX711.py. I've only made a few modifications on the way the captured bits are processed and to support Two's Complement, which it didn't.

Update: 25/02/2021

For the past years I haven't been able to maintain this library because I had too much workload. Now I'm back and I've been working on a few fixes and modifications to simplify this library, and I might be commiting the branch by mid-March. I will also publish it to PIP.

Instructions

Check example.py to see how it works.

Installation

  1. Clone or download and unpack this repository
  2. In the repository directory, run
python setup.py install

Using a 2-channel HX711 module

Channel A has selectable gain of 128 or 64. Using set_gain(128) or set_gain(64) selects channel A with the specified gain.

Using set_gain(32) selects channel B at the fixed gain of 32. The tare_B(), get_value_B() and get_weight_B() functions do this for you.

This info was obtained from an HX711 datasheet located at https://cdn.sparkfun.com/datasheets/Sensors/ForceFlex/hx711_english.pdf

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HX711 Python Library for Raspberry Pi.

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