Four load cells wired in parallel - measurement changes depending on weight posi

Other Hardware Sensors
1

Hey everyone!

I took apart a digital kitchen scale with four load cell sensors in each corner. I wired the load cells like in this diagram and connected them to a HX711 sensor.

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I encountered two issues here:

  1. one load cell always outputs a little less than the other four. When i put a 100g weight on a single cell, each one gives me 100g output except for one that only gets to around 70g. Could that be a faulty cell?

  2. Everything looks fine when I assemble the whole thing and put a weight on the center of the scale. But as soon as the weight gets moved off center towards the edges, the values changes significantly to a higher number.

Any help is appreciated. Thank you!

2

I have problems decoding your electrical connections.
Connect oposite corners to form a full wheatstone bridge.
Parallel the two.

3

I'm doing the same project, I wired the scale with arduino correctly. Just I need a correct code, can you please give me your code just to test my scale with the arduino?