@enif, do you have any thoughts on how changing the voltage might impact the thermistor readings? Since the thermistors are based on a voltage divider down from the 5V bus, would the ADCs read the same for the 4V supply (after diode drop) as for the 5V?
I'm not so familiar with how the ATMEGA's ADCs work--if they're based on some internal reference voltage it would seem that your measured temperatures would vary wildly depending on if there was 4V or 5V.
Of course, when it comes down to it, the only time the thermistor readings would really matter would be when you have 12V applied anyway, so it might not be an issue.
I'm not so familiar with how the ATMEGA's ADCs work--if they're based on some internal reference voltage it would seem that your measured temperatures would vary wildly depending on if there was 4V or 5V.
Of course, when it comes down to it, the only time the thermistor readings would really matter would be when you have 12V applied anyway, so it might not be an issue.
