# HX711 strain gauge

**URL:** https://discourse.nodered.org/t/hx711-strain-gauge/34333
**Category:** General
**Created:** [16 October 2020 06:33 UTC](https://discourse.nodered.org/t/hx711-strain-gauge/34333 "2020-10-16T06:33:00Z")
**Posts on this page:** 2
**Page:** 1

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### Author: ![John\_Barry](https://sea2.discourse-cdn.com/flex026/user_avatar/discourse.nodered.org/john_barry/32/28987_2.png) [@John\_Barry](https://discourse.nodered.org/u/John_Barry)
#### Post date: [16 October 2020 06:33 UTC](https://discourse.nodered.org/t/hx711-strain-gauge/34333/1 "2020-10-16T06:33:00Z")

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Hi,

I am building a scale that has 2 x servo motors on a swivel so when a weight is between range 1,2,3 etc the platform will tilt and the object will fall in the appropriate direction.

I have used the example.py script with a python shell node to use the loadcells but there is no inject node.  
If the power dips or ups runs flat how do I make this script run on boot?

I have also tried the node-red-contrib-hx711 node but as soon as I install wiring.pi nod red crashes and wont launch again.

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### Author: ![system](https://us1.discourse-cdn.com/flex026/uploads/nodered/original/1X/d073cd938eafa2e558d7c2cd59003b3ef4963033.png) [@system](https://discourse.nodered.org/u/system)
#### Post date: [15 December 2020 06:33 UTC](https://discourse.nodered.org/t/hx711-strain-gauge/34333/2 "2020-12-15T06:33:05Z")

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