Strain Gauge Load Cell Arduino

On the right side of the hx711 breakout board the four terminals are clearly labeled with gnd dt sck and vcc.

Strain gauge load cell arduino.

Support me for more videos. Stacking the load cell shield the load cell shield uses analog pins a0 and a1 for strain 1 and strain 2 inputs respectively. 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. Instrumentation signals for example from wheatstone bridge sensors are often in the order of mv millivolts or less and need to be amplified for.

For more information on load cells strain gauges and wheatstone bridges see our tutorial. Stack the load cell amplifier shield on top of the arduino board in our case a lynxmotion botboarduino. In bar strain gauge load cells the cell is set up in a z formations so that torque is applied to the bar and the four strain gauges on the cell will measure the bending distortion two measuring compression and two tension. The white connectors on the board are 4 pin molex connectors with 0 1 spacing.

The ground of the hx711 is connected with the arduino s ground. The load cell wheatstone amplifier shield 2ch is intended for precise amplification of measurements specifically for bridge amplifiers medical instrumentation and industrial process control. The white wire will be connected with the a pin of the hx711 while the green wire of the load cell or strain gauge is connected with the a of the hx711. 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.