Best Load Cell Sensor for weighing systems Circuit Diagram OVERVIEWWe've all used a scale to determine the weight of something at some point in our lives.Using a Load Cell or Weight sensor you can add this capability to your Arduino projects.In this tutorial we will see how to connect, calibrate and display the weight on a small OLED display, and by using a rotary encoder we will be able to change the units from: grams, kg or pounds.We will be using
The load cell we're using is usually sold together with an HX711 amplifier. So, that's the amplifier we'll use. HX711 Amplifier. The HX711 amplifier is a breakout board that allows you to easily read load cells to measure weight. You wire the load cell wires on one side, and the microcontroller on the other side.
How to Measure Weight With Load Cell Sensors Circuit Diagram
The digital bathroom scale is a strain gage-based load cell device. While classic mechanical scales use a series of levers to distribute the applied weight and drive a spring connected to a mechanical dial, most of today's digital models use multiple strain gauge-based load cells to calculate your weight.
A load cell is an application of strain measurements relating to weight measurement. A load is applied to a strain gauge, which causes the gauge to strain a certain amount and output a voltage proportional to the applied load. This relationship between strain and voltage is used in many applications where weight measurement is important. In this post I have explained about strain gauge based load cell. We will be exploring what Strain Gauge is, what Load Cell is, temperature effect on strain gauge, temperature compensation with Wheatstone bridge and Load cell amplifier HX711, and finally I have explained how to build an Arduino based weighing scale machine by implementing load cell as the weight sensor.
How To Use Load Cells For Weight Measurements Correctly Circuit Diagram
Check the arrow on the load cell. It tells us the direction that we need to apply force. You can assemble the load cell as shown in the figure above using metal strips. Just attach the metal strip on the load cell using bolts. Or you can simply attach bottle caps with bolts by making a hole in the bottle caps as I did in the image below.
