I have a MEGA with a 16x2 LCD, and I want to display the inside and outside temps of a car. Im having trouble converting the readings from the port to actual F readings. I have the ADC values as well for referenced temps off a thermometer I have. The numbers seem to be backwards though. Any help would be great!!!
39F = 631 44F = 626 80F = 606 128F = 571
if I convert them to remainders, TEMP = 1023- ACD 39F = 392 44F = 397 80F = 417 128F = 452
Looks like there is no correlation for either value, Im at a loss right now.