Weigh Objects with an Arduino Scale - Arduino Project Hub

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Components and supplies

A000066 iso both

Arduino UNO & Genuino UNO

Necessary tools and machines

09507 01

Soldering iron (generic)

About this project

I found a dead scale at work, the electronics were fried. I figured the load cell inside was still good, and would be fun to hack. I stripped out the load cell, and connected it to an Arduino with a HX711 amplifier / 24 bit ADC.

Schematic

Output

Code

Load Cell SketchC/C++

Copy into Arduino IDE and upload to your Arduino. Don't forget to install library (see code line 4)

/* sample for digital weight scale of hx711
 * library design: Weihong Guan (@aguegu)
 * library host on
 *https://github.com/aguegu/ardulibs/tree/3cdb78f3727d9682f7fd22156604fc1e4edd75d1/hx711
 */
 // See original article and code / library link at http://arduinotronics.blogspot.com/2015/06/arduino-hx711-digital-scale.html

// Hx711.DOUT - pin #A2
// Hx711.SCK - pin #A3

#include <Hx711.h>
Hx711 scale(A2, A3);

void setup() {
  Serial.begin(9600);
}

void loop() {
  Serial.print(scale.getGram(), 1);
  Serial.println(" g");
  delay(200);
}

Schematics

Schematic

created with schemeit from digikey

Hx711%20schematic

Comments

Team Arduinotronics

Steve Spence

1 project
10 followers

Additional contributors

Library code by Weihong Guan

Published on

August 24, 2015

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Table of contents

Finding the IR Codes of Any IR Remote Using Arduino
Components and supplies
Apps and online services
About this project
Introduction
Working on Basics
Hookup
Uploading and Testing
Code
Schematics
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