Re: TI-H: Infrared cable adapter
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Re: TI-H: Infrared cable adapter
>Judging from my experience, it should be relatively simple to splice an
>infrared LED to the TI-cable, perhaps with a transistor as a switch or even
>direct, powered by the cable's own voltage. It would be easy then to
>construct a complementary phototransistor link and thus optiplex the TI
>calculators, like a laptop's IR port. Even if this is too tough, since the
>output to the wire can be modulated (i.e., to produce sounds from the
>port), wouldn't it be trivial to program the proper modulations to, say,
>turn off your TV? Poof, instant universal remote. Someone, somewhere,
>might have enough time on their hands to program in an entire library of
>VCR & TV codes. If so, that person can be my friend.
>
>btw, same thing might work for garage door openers, as those are just
>modulated carrier as well. Be the terror of your neighborhood! Write an
>algorithm to cycle through all possible codes! Watch neighbors cringe in
>fear at their possessed garage doors! Or, not. I don't care. It's just a
>suggestion, anyway.
>Control radio-controlled cars? Hmm.
>
>Now, if only TI-calcs had enough sound capabilities to do DTMF, geeks in
>pocket-protectors would take over whole third-world countries.
Possible. Build a shift register <-> DTMF circut. You can find the DTMF
circut in the green radio shack book.
Grant
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