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0 votes
2 answers
63 views

Is there a switch that turns on when it detects a "pull" of a few grams on a string?

I'm working on my first Raspberry Pi project. I'd like to turn my project "on" when a force, of a few grams, is applied to a string (i.e. "pull the string" to turn the unit on, the ...
Offswitch's user avatar
3 votes
1 answer
1k views

HX711 with RaspberryPi and python

I have been working to create a digital scale for IOT project, using HX711 ADC. The problem Since it is crucial to have wifi connection, I use Raspberry Pi, to control the scale. Everything works well,...
Andri Busch's user avatar
0 votes
2 answers
2k views

How to measure multiple objects' weights with load cells and Raspberry Pi 4?

I am working on a class project that involves a raspberry pi and strain gauge load cells. . The goal is to measure the weight of two or more objects using a set of two load cells (In the picture it ...
Johan Arcos's user avatar
0 votes
0 answers
215 views

Raspberry pi not getting any data from hx711

I'm trying to combine two boards into one: SparkFun Load Sensor Combinator(basically just a wheatstone bridge) and SparkFun Load Cell Amplifier. The data will be transmitted to a Raspberry Pi 3 so ...
Godrod's user avatar
  • 23
0 votes
0 answers
161 views

RaspberryPi: Load cells and HX711 amplifier

I've created an app that will read 10 weighing scales at the same time with separate values but since some wires are like 1 meter long, I get so much noises in the values. I just wanna know if what's ...
Alexa's user avatar
  • 101
0 votes
3 answers
2k views

How to mount four 6-wire 10V load cells on Arduino or Raspberry Pi?

I want to connect four 6-wire load cells (Tedea Huntleigh Compression & Tension Load Cell 300kg, 15V dc, IP67, product page and datasheet) into an Arduino or Raspberry Pi and get four independent ...
emonigma's user avatar
  • 219
0 votes
1 answer
2k views

I used a compression load cell, a HX711 and a Raspberry and I get really terrible inconsistent readings, are these devices incompitable?

I wanted to create a 10-200 lbs scale using a FX1901-200 lbs load cell (https://www.digikey.ch/product-detail/en/te-connectivity-measurement-specialties/FX1901-0001-0200-L/223-1531-ND/5277314), a ...
user2741831's user avatar
1 vote
1 answer
1k views

Can I use any GPIO pins on the Raspberry Pi for the HX711 Amplifier?

We're going to use an HX711 amplifier to read data from a strain gauge - the SparkFun page says you can use any GPIO pins but it one is "clock" and one is "data." What does that mean in this case? ...
squeegene's user avatar
  • 239
-1 votes
1 answer
2k views

Connect load cell to hx711

I have a 50 kg load cell and an HX711 sensor (as in the image below), my problem is that in all the tutorials I've seen people use load cells with 4 output wires or 2 cells with 3 output cables, I ...
Maximiliano beltran oyarzun's user avatar
0 votes
1 answer
737 views

Why isn't my load cell detected by openscale?

I want to measure the pull force on a rope, so I bought myself a Sparkfun OpenScale and this tensile load cell. I just received both of them, so I connected them as described and hooked the OpenScale ...
kramer65's user avatar
  • 485