No impact at all…
So does that mean the arduino and cable has a higher resistance/impedance than the jumper wires / fingers, etc that were the way?
Doesn’t make sense at the moment, in a resistor divider, you have one resistor (the sensor), and the other a known value and you read the mid point of this.
What I find is if I read the voltage between the two cables that go to the sensor (i.e. think of a thermistor, you would wire it up with one side to the ground, and the other to the resistor, and measure the mid point of what you get back).
I wasn’t expecting to find the same voltage between the two though - if anything, I’d have expected to find the 5V being supplied to the thermistor.
The diode on the ground side of the sensor is odd too.
Is there perhaps another reason for it to not care ?
I do recall that the controller reset / had randomness when I tried measuring once a while back, but I think I tried measuring resistance of the thermistors in circuit - this would mean I am taking current from the circuit, right?