Tagged: #DIY #HX711 #WEIGHING SCALE
January 7, 2022 at 2:09 pm #89261SAMIUDDHINParticipant
I am working on a project which the 50kg half bridge cell load cells are placed at a distance of minimum 25cm from the HX711 IC. The problem was, whenever I read the raw value and the weight value, the result is oscillating each time I call the respective function. I tried with shielded cable but I didn’t get the satisfied result. Anybody know how to solve this issue?January 18, 2022 at 4:13 pm #89776Abhimanyu RathoreKeymaster
Reply by Ehsan Habib: Try to take some sample Value, and Average itJanuary 18, 2022 at 4:28 pm #89778SAMIUDDHINParticipant
Yes, I did that but I was getting the results irrelatively and sometimes negative value. Please note that, I am reading the value of multiple load cells through a mux. Can you help?January 20, 2022 at 1:14 pm #89951Ronie1988Moderator
The load might be oscillating. The issue maybe a mechanical thing. However as you have said that you already are using a shielded cable, try to use shielded twisted pair like CAT-6 cable. Also in the input section of the HX711 module try adding filter capacitor. Make sure power supply is clean and setup is away from a EM noise source.
Also as you said that you have used a mux (perhaps analog), have you compensated for voltage drop in mux by adding voltage buffer at the end of Mux output ? Please share diagram to enable us to help you further
- This reply was modified 4 months ago by Ronie1988.
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