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saquib_akhter
01-03-2008, 08:15 AM
hi folks....
i've made line follower robot to move on a white line over black background with two IR sensor..
I've given 5v to the photodiodes (through 7805) and 1.23v to the leds(through LM 317).one of the sensors is working properly and giving a voltage difference of nearly 2v over black and white.but the other one is giving less than 1v and that is also not constant.... :cry:

PLZZZZZZZZ HELP..