Measured voltage decreases with current

[Arachnid]

For some reason the measured voltage decreases with current in line with the value of the shunt resistor. We should fix this in software.

[knarfS]

Just guessing, that this is due to the voltage drop over the relatively thin cables between the PCB and the banana jacks.

[Arachnid]

It's possible, but it's a strange coincidence that the drop is almost exactly the same as the shunt resistor value.