Re: TI-H: Simple IR link
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Re: TI-H: Simple IR link
Andy Johnson (prjohnson@utahlinx.com) wrote:
>
>I was thinking of a way to make a simple IR link, using RadioShack parts.
>Here's what I came up with. Unfortunately, it requires the use of custom
>software, but that isn't much of a problem.
>
>I used a 555 to generate a 40 kHz carrier, controlled by pin 4 on the chip,
>then ran the output through a transistor into an IR Led. The receiver is
>just a GP1U52X (RS 276-137). I'm not sure about the electronic
>characteristics of the linkport, but that shouldn't be a big problem to
>fix. I've only used one of the calc's wires on each end, allowing one to
>be used as transmit and the other as receive. If timing is a problem, the
>driver software can use transitions instead of pulses (1-0 = 0, 0-1 = 1,
>you get the idea). I expect the speed to be around 1200 bps, and range to
>be about 10 ft, but lenses and high powered LEDs could fix that.
Have you checked out Sami Khawam's website?
http://unet.univie.ac.at/~a9501901/irlink/e_hard.htm
-Brian
_________________________________
Brian Watson (pilotcar@iserv.net)
AIM: Soy ElGato
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