SIMPLE LINE FOLLOWER BOT
WHAT YOU NEED?
1) IR LED
2) IR SENSOR
3) NPN TRANSISTOR(BC 547)
4) 100 OHM RESISTOR
CIRCUIT
SO HERE WE CAN SEE THAT IR LED AND IR SENSOR IS USED FOR LIN SENSING.
IN WHICH IR RAYS WERE EMITTED FROM IR LED AND FALLS ON THE SURFACE AND IF IT IS WHITE THAN IT REFLECTED AND IT SHOULD BE CAPTURE BY IR SENSOR AND GET FIRED. DUE TO WHICH 5V SINGLE IS APPLIED TO NPN TRANSISTOR AND IT GET FIRED AND DUE TO WHICH THE WHOLE 12V DROP SHOULD BE ACROSS MOTOR AND MOTOR GET STARTED.
ADVANTAGE
1) IT IS NOT HAVING ANY INFLUENCE OF LIGHT ON IT.
NOTE
THIS BOT IS BLACK LINE FOLLOWER BUT IF YOU WANT TO MAKE A WHITE LINE FOLLOWER THAN WHAT YOU HAVE TO DO ONLY REPLACE NPN TRANSISTOR BY PNP TRANSISTOR.
