Hello.
So I am running a printer with ramps 1.4 / Mega using Marlin firmware.
Im using NTC3950 thermistors for both the hotend and the bed and have them set up with option 5 in Marlin.
The thermistors show wrong values at room temperature(~20 celcius).
The hotend thermistor shows 35 and the bed thermistor shows 10.
They both heat up, but the actual temperature is probably different than the one shown since the initial temperature is incorrect.
I tested the thermistors using a multimeter and their values were correct according to their resistance charts ( ~110k at room temp)
I beleive that the problem is with the ramps shield or the mega board, but I do not know how to test them.
What should the internal resistance of the T0 and T1 pins be?
Can a wrong resistance/ leaky capacitor divide the voltage in an unexpected way that gives me higher/lower values than expected ?
Any advice is appreciated.
Thank you.
