This answer quotes ChatGPT
Possible causes include:
- Circuit connection problem: Check whether the circuit connection is correct, including the HX711 chip, pressure sensor, and power supply. You are advised to use a multimeter to check whether connections are stable and accurate.
- HX711 Initialization Problem: Ensure that you have properly initialized the HX711 chip. Please check the initialization code, such as whether the GPIO port is set correctly.
- Data reading problem: Please check the data reading code, for example, whether the GPIO port is set correctly. You are advised to add a delay before reading data to ensure that the HX711 chip has completed the conversion and output data stably.
- Data processing problem: Please check the data processing code, such as the formula for calculating weight is correct. You are advised to add debugging code to troubleshoot problems step by step.
- Other problems: If the preceding problems are correct, they may be caused by other problems. It is recommended to check whether the HX711 chip and pressure sensor are damaged or incompatible, or try to use other chips and sensors to test.