Ok. Now you are wondering what is my project, right?
Based on an infra-red sensor to analogue, I build this autonomous car.
The circuit has few components and is easy to mount and only a little difficult to adjust the angle of the sensor.
Step 1: The parts
-1 Relay to 9V with two contacts (one normally open and one normally closed)
-1 U.B white LED
-1 IR LED (TIL 38)
-1 photo-transistor (TIL 32)
-2 1K resistor
-1 9v C.C engine
-1 9V battery connector
-1 chassis of an old toy car (preferably one that already has an engine, lock the pictures)