Ir detector for BOE-Bot

D Faust

Does anybody know whether the IR detector that comes with the BOE-Bot kit is analog ( it outputs different voltages based on ir amount) or digital (it is either on or off).· The help is appreciated.

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D Faust

Steve Joblin

It is digital... the device goes "high" when it senses a 38khz beam of IR light (which is usually the reflected light from an IR LED being driven at 38khz).

D Faust

Does the frequency of the signal to the detector have to be 38 kHz, because I set mine off with a remote.

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D Faust

Mike Green

The center frequency of the detector is 38KHz, but it does respond to a wider range of frequencies. You can download the datasheet from Parallax's website and it shows the response curve (www.parallax.com/dl/docs/prod/audiovis/PNA4601M.pdf).

D Faust

Thanks, I read a lot of the info for the larger componets, but I didn't think of checking the documentation becuase I figured that nobody would bother to post it. Parallax is pretty good at posting product info, I should probably check there first.

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D Faust

allanlane5

Most IR remotes 'modulate' their IR output at between 36 Khz to 42 Khz.

Personally, I haven't found a remote that won't be detected by the 38 Khz IR-Detector, so it shouldn't be a problem.

D Faust

Can you send signals to a TV with the boe bot / BASIC Stamp and an IR emitter? Does anyone have any info on how this might work?

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D Faust

Mike Green

Have a look at this tutorial: www.parallax.com/dl/docs/prod/sic/WebIR-%20v1.1.pdf.

D Faust

Thanks, that is just what I wanted!

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D Faust