Re: TI-H: Infrared cable adapter
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Re: TI-H: Infrared cable adapter
Ans: The remote that came with the TV.
>>With the method I suggested or with the remote that came with the TV?
>
>er, actually, the method i made up on the spot. Kind of a combination of
>both.
>
>Take that old 555 timer you use to impress your friends by flashing an LED
>on and off repeatedly and set it up to oscillate at 40KHz. Yes, lots of
>tweaking is required. Stick an IR LED on the output. Attach the power
>supply of the 555 to a Radio Shack 40KHz IR demodulator (essentially the
>inverse of the above circuit but in a neat-o little box) coupled to a
>transistor for switching. Point your remote control at the demodulator.
>TV turns off. Yay.
>It looks like this:
>
>
>REMOTE ---zap---> /demodulator/ --signal minus 40KHz carrier------> 555
>timer @ 40KHz ---> IR LED -----> Old Sony
>
>Now, the difficult thing is to write an ASM program to mimic the sound of
>the remote, a high chirp. It needs to be decoded exactly, so maybe I'll
>sync it up with my microphone sampling rate on the computer and dig out the
>bits. If only a 'record' routine could be implemented on the link cord...
>
>--nick
>
>
>Nick Foster / zaphod@ici.net / Bistromath
>Key ID 2048 / 770F6E8F
>Fingerprint 9E 60 08 44 FB F2 C9 CE BE 74 08 87 2C 39 4B 6E 77 0F 6E 8F
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