Digital Load Cell Weight Sensor 1 Circuit Diagram In this tutorial, you will learn about the load cell module, its applications and its operation. Also, you'll see how to use the load cell module with Arduino. Then after learning about calibrating the load cell, you will create a digital scale that can measure the weight with an accuracy of 0.0001 grams and also a force gauge. What You Will
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
How to Build a Weight Scale With an Arduino Circuit Diagram
The load cell has two outputs, a minus and a positive output, the difference of these will be proportional to the weight. The amplifiers requires a +15V and -15V connection. The output of the amplifier is connected to an Arduino which needs a 5V connection, where the analog values will be read in and re scaled to a weight output.
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
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.
