IR remote control computer interfacing

Posted on Feb 7, 2014

This article tries to get you some idea how to interface IR remote controllers to computer. Possible applications could be controlling your computer your TV`s remote control or controlling your VCR using computer. This circuit was posted to sci. electronics newsgroup long ago. This circuit has been very useful to me because I based my first IR remo

IR remote control computer interfacing
Click here to download the full size of the above Circuit.

te control experiments on this circuit. With some little modification the transmitter part of this circuit can be used with computer. The idea is to cut the wire going to 7555 IC pin 4. Connect the wire end coming form receiver to computer input and the end going to 7555 chip pin 4 to one computer output (computer inputs and outputs should be TTL level signals). This circuit is a good example how to do the computer to IR remote interfacing in both ways. All you need is a simple program for sampling the data coming form receiver (few kHz sample rate is enough). When you want to control something, then just send the sampled data to the transmitter part of this circuit. The circuit can be easily connected to PC parallel port for your experiments. If you are experimenting only with reception, then one good idea might be to connect the receiving part of the circuit to joystick port, because there are easy to use input lines and also poer for the whole circuit. Newsgroups: sci. electronics From: dplatt@ntg. com (Dave Platt) Subject: Re: Infra Red Retransmitters - For Remote Controllers. Organization: New Technologies Group, Inc. Palo Alto CA Date: Mon, 28 Feb 1994 04:00:25 GMT >1)Several receptors in parallel (arranged in order to have at least >270 degree range) You can probably use the little receiver modules made by Sharp, and marketed by Radio Shack (among other places), in a sort of wired-OR arrangment. Sony TV sets do this...

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