[ad_1]
If you are looking to interface multiple load cells with an HX711 amplifier, you have come to the right place. In this article, we will guide you through the process of connecting and setting up multiple load cells with an HX711 amplifier for accurate weight readings.
Load cells are sensors used to measure force or weight by converting the force into an electrical signal. The HX711 amplifier is a precision 24-bit analog-to-digital converter (ADC) designed specifically for weight scales and industrial control applications. By combining load cells with an HX711 amplifier, you can accurately measure weights and calibrating your scale.
Here are the steps to interface multiple load cells with an HX711 amplifier:
1. Choose the right load cells: It is important to select load cells that are compatible with the HX711 amplifier. Make sure the load cells have the same specifications, such as the same 4-wire configuration and voltage rating.
2. Connect the load cells in parallel: Firstly, wire the load cells in parallel to ensure accurate weight measurements. Connect the red wires of all the load cells together and connect them to the E+ (Excitation Positive) input on the HX711 amplifier. Next, connect the black wires of the load cells together and connect them to the E- (Excitation Negative) input on the HX711 amplifier. Finally, connect the green and white wires of the load cells to the A+ and A- (Amplifier Positive and Amplifier Negative) inputs on the HX711 amplifier, respectively.
3. Set the gain factor: The HX711 amplifier has a gain factor that can be adjusted using a resistor. Depending on the load cells you are using, you may need to adjust the gain factor to ensure accurate weight readings. Refer to the datasheet of the HX711 amplifier for the correct gain factor calculations.
4. Calibrate the scale: Before using the scale, it is important to calibrate it to ensure accurate weight measurements. Place a known weight on the scale and adjust the calibration factor in your code until the weight matches the known weight.
5. Test the scale: Once you have connected and calibrated the scale, test it by placing various weights on the scale and verifying the readings. Make any necessary adjustments to the code or calibration factor to achieve accurate weight measurements.
In conclusion, interfacing multiple load cells with an HX711 amplifier is a straightforward process that requires careful wiring, setting the gain factor, calibrating the scale, and testing the accuracy of the weight readings. By following the steps outlined in this article, you can successfully interface multiple load cells with an HX711 amplifier for precise weight measurements.
https://maps.app.goo.gl/jgBjMS3mZYiTGFWx9