Load Cell Adc Arduino

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. You have created your first digital scale with arduino and hx711 adc weight sensor module. Picture 1 shows the connected and powered up project.

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It reads the information from the load cell amplifies the signals and then sends it to the arduino for processing.

Load cell adc arduino.

The video shows the running project and the serial terminal as different weights are placed on the load cell. Common load cells have four wire to connect the hx711 to a. The changes in electrical resistance provided by the load cell need to be amplified so that they can be read by an arduino. For a 1kg load cell.

Vcc is the analog voltage to power the load cell. A 24 bit analog to digital converter called the hx711 converts the small changes in strain from the load cell into 24 bit changes in voltage arduino 0 5v. Vdd is the digital supply voltage used to set the logic level. This allows the arduino to resolve weight mass changes down to the range of the load cell typically 500g 1kg 5kg or more divided by half the bit depth 2 23.

The grove adc for load cell hx711 is a 24 bit a d converter designed specifically for the load cell it s quite easy to build your arduino weight sensor system with this module. In this arduino tutorial of hx711 load cell amplifier interface. That s exactly what the hx711 board does. We are interfacing 40kg load cell to the arduino using hx711 load cell amplifier module.

Once the load cell is is hooked up to the amplifier you can hook up vdd vcc dat clk and gnd to a microcontroller such as a redboard or arduino board. If you open the serial terminal in the arduino ide or visuino and there is no weight on the load cell you will see.

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