simple line follower


Posted on Feb 5, 2014

If there is no light falling on the diode it will exert a high impedance(resistance). if light falls on the diode resistance of the diode willdecreased. (almost short circuit) in case of a black body or space(no objectin front of sensor) thenno light falls on the diode so it will act like a open circuit. so voltage at output will be almost equal to `5V` MOTOR GOES FORWARD MOTOR WILL BESTOPPED


simple line follower
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