So i want to grab the analog signal of the LM35 and convert it to digital with the AD0804 with this diagram http://www.youtube.com/user/maximomorales#p/c/264B666DBE3B03DB/0/BJ_1i9qKZog (step by step build
) but it's not working at all.
All the leds simply go on so it reads 1111111 even with no input and nothing changes them significantly. I measured the voltage on the INPUT pin of the AD and it gives out 5....is this normal?? shouldn't it be 0 or something because it's an input pin , not an output pin?
Also on the diagram i don't understand what the micro pulser is doing...is it switching the thrid pin to ground?
I'm really new to this (i am also supposed to be on engineering not on electronics lol) and i am getting kind of desperate with this thing -_-
Any kind of help would be appreciated D: (should i post pics of my circuit or something?)
All the leds simply go on so it reads 1111111 even with no input and nothing changes them significantly. I measured the voltage on the INPUT pin of the AD and it gives out 5....is this normal?? shouldn't it be 0 or something because it's an input pin , not an output pin?
Also on the diagram i don't understand what the micro pulser is doing...is it switching the thrid pin to ground?
I'm really new to this (i am also supposed to be on engineering not on electronics lol) and i am getting kind of desperate with this thing -_-
Any kind of help would be appreciated D: (should i post pics of my circuit or something?)