So for this test run I put the scale attached to the NodeMCU in a plastic box on my balcony. Together with the weight (drift) I’m also measuring the temperature. My hope is that this way I can learn how the load cell drifts with temperature. So now I hope for a cold night and a hot day to get a big range for my test;-)
Update (next day)
|Scatter Plot of the load cell’s temperature drift: on the Y axis
is the deviation from a tared cell, on the X axis the temperature
|The uncompensated deviation from zero|
|The temperature at the same moment|
|The weight calculated after subtracting the temperature drift|
A ridiculous amount of coffee was consumed in the process of building this project. Add some fuel if you'd like to keep me going!