Electrical interference issues when using 4 load cells?
Edward-Sams opened this issue · 3 comments
Hello World. I've been working on creating a simple scale using 4 load cells. I started with using just 1 load cell to make sure my wiring, connections and software were all correct. Everything is fine. When I scaled up the project to 4 load cells, I am getting a lot of drift in the value. I have tried twisting the wires which may have helped a little, but the problem persists. I have also noticed, just getting my hand near the scale (within 12 inches) the values drift must faster, and a much larger range. I believe I have some electrical interference. How do I solve for this?
My code, I am just using the HX711_ADC calibration software.
Power source is a usb connected to my mac (same on I used for the single load cell test).
I have tried soldering my wires directly to the microcontroller and using a dupont connector.
Hi, sorry for late response.
Unfortunately I don't understand what's cousing the problem, it seems to me you have already tried what I would normally have suggested. The loadcell signal is in the millivolt range so quite senitive to electrical noise, but I can't remember that I have seen any difference if I just move my hands up close...
Thanks. I think my issue is more the soldering connection on the hx711 and not the wires. I'm going to try a different style hx711 this weekend to see if that resolves my issue. As it works now, it works fine but if i move the setup at all, it will stop working correctly.
I’m closing this issue because it has been inactive for some time.
Please reopen if you still encounter this issue with the latest version.
Thank you!