Load Cell Calibration Arduino

I have two 3 wired load cells white red black and i m using them to create a 100 kg scale using hx711 but the connections and the coding given in all the sites are not giving the expected results instead they are printing random values.

Load cell calibration arduino.

The hx711 is easily wired to the arduino using any two digital or analog pins. Hx711 is a precision 24 bit analogto digital converter adc designed for weigh scales and industrial control applications to interface directly with a bridge sensor. So once you have established two data pairs you can interpolate the rest.

The load cell must also be accurately wired to the hx711 to ensure that the appropriate strain gauge leads are used to approximate the weight given by the load cell. Using a load cell or weight sensor you can add this capability to your arduino projects. To use a load cell first you need to calibrate it. In this arduino tutorial of hx711 load cell amplifier interface.

Once you have calculated your calibration factor of your load cell set up you can move on to other code such as the simple scale output example code sparkfun hx711 example ino. 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. Upload this sketch to your arduino board you need two loads of well know weight. Now that you have your load cell amplifier and microcontroller hooked up you can add your code and start calibrating your setup.

Arduino as load cell amplifier by christian liljedahl christian liljedahl dk load cells are linear. In this example a 10 kg. To do this upload the following code on your arduino board. Wait until the reading message is displayed on the serial monitor and then place a specified weight item on the load cell.

Grams kg or pounds. Next we will explore calibration and test the load cell as a weighing scale.