Line following robotic vehicle using PIC 16F877A

Line following robotic vehicle using PIC 16F877A In these Line following robotic vehicle that follows a specific path by using a pair of photo sensors comprising IR transmitter and photo diode interfaced to micro controller to detect the specified path for its movement of the vehicle here is follow the Black line on white surface IR sensor Detect if black color then receiver doesn't receive the infrared signal & if it White then It Receive the Signal in short on black Surface infrared signal not reflect so sensor output pin remain High & on white Surface sensor output pin remain low.