I even went so far as to remove one set and set up my own 4.7k resistor to verify (without ESD varistor), and got the same readings (not just on the thermistor slots, but also on the broken out analog ports, so 0-8 as well). I tested all of these components, and they all tested within expected parameters for voltage, resistance, etc.(except for the ESD ones, which I wasn't entirely sure how to properly test). ![]() ![]() The thermistor slots have a 4.7k trim resistor attached to 5V, and a 20V ESD protection varistor attached to ground. Normal thermistor inserted into ANY of the four thermistor slots (I am using one of two 100K thermistors, which work fine on the sanguinololu) results in a reading of 600-1000C (depended on a few things, but was generally reproducible) and more puzzling, heating the thermistor resulted in a reproducible REDUCTION in the measured temperature (and before you ask, I checked that I was using the right thermistor veral times and in several ways). I just upgraded my electronics from a Sanguinololu to a RAMB0, and in the process I think I screwed something up (not sure how, but I am hoping that with a better understanding of what is going on, I can determine that). I have been pulling my hair out with this problem, and I am looking for a good explanation of what the hell is going on.
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