Hi, thank you for your | Microcontroller › 8051 › Please help in reading digital output of IR sensor › Hi, thank you for your June 1, 2012 at 6:44 pm #7951 MachParticipant Hi, thank you for your interest. The sensor is an Infrared Obstacle detection sensor with four pins, namely: Vcc(5V), GND, Digital out & Analog out. It can detect obstacles up to 30 cm.
