If the VCC GND cable of hx711 is connected to the ESP32 chip for too long, it will cause incorrect data. Why. If the line is greater than 20cm, the data is incorrect. I want to use a 100cm thread, is there a way to solve it? Can extending the wire connecting hx711 to the weighing sensor solve this problem? Is there any other way?
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So - it's not the time that the cable is connected but its length.
Perhaps a shielded cable?
a shielded cable maybe sovel problom.
which cable are you planning on making so long? The connection between the load cell and the HX711 amplifier or between the HX711 and the ESP32? The connection between the load cell and the amplifier is a very small, analog signal (very sensitive to noise). The one between the the HX711 and the arduino is digital (less sensitive).
thank you.The one between the the HX711 and the arduino is digital (less sensitive). it is good choice.
but could still cause noise. If so, shielding is good. It is usually easy to get some LAN cable (Cat 5 or Cat 6) that is shielded and has twisted pairs. For each pair, match the data line with GND.
You can certainly try before going to that extra work.
Unbelievable, replacing the chip ESP32 with Mega, everything is normal.
5V v. 3.3V - not hard to believe.
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