Circuit Lake

Air-Byte IR Transceiver is a PIC based tranceiver that transmit & receive infrared signals with your PC serial port. The project provides a simple method for receiving serial data on one pin, and outputting serial data on another modulated at the IR detectors band-pass frequency.

The brain of the Air-Byte transceiver is a tiny 8-pin PIC12F508 microcontroller. Operation is simple. The PIC simply monitors GPIO,0 connected to the PC serial port TX pin #3. When this pin transitions from logic low to logic high, the 12F508 generates the 40kHz IR carrier. During low periods the carrier is suppressed.

IR Tranceiver
Documentation of IR tranceiver
rentron.com