The infrared transmitter is intended to convert the modulated light into digital signals. Using this technique, it is possible to transmit and receive the data. The firmware within the controller can then be programmed to accomplish a defined task. The most common task that is frequently used is, in remote control hand held device in our TV receiver. However this concept can be utilized to operate several appliances and devices. The necessary software for any specific device must be written by you and embed in the controller, before it becomes operational.

This interface module comes in two parts, a Transmitter hardware and a receiver hardware. This transmitter sends a series of pulses in a coded fashion and is received at the receiver. The data is sent in the form of a packet of 12 bit data along with button code. The data to be transmitted is first modulated with precise time slots at the transmitter, and then demodulated at the receiver. The experimental module is intended to understand how these are taking place, and study rudiments of these techniques. In order to make the experiment more flexible, it is better to use the 4 X 4 matrix push button interface also as part of this interface. An external power supply 5V DC @250mA is required or +5V DC power supply Model SP5 is recommended.