IR Remote Control Issues


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    Quote Originally Posted by Kamikaze47 View Post
    Sounds exactly like what i've observed. Do you know of a page on the net somewhere that has more detailed info on the protocol they used? I havn't been able to find any info on it.
    I don't recall seeing any detailed description. There is a simple description at http://www.techdesign.be/projects/011/011_waves.htm and there are CCF codes on RemoteCentral.com and at http://ir.premisesystems.com/. There are a few detailed descriptions of the NEC protocol. It was the first and was copied with minor changes by many others. Here's a datasheet for an early NEC encoder chip - http://davehouston.net/Nec6121.pdf

    EDIT: BTW, I find it easier to record the codes as .wav files using a soundcard. This way you can use a wave editor to view them. See http://davehouston.net/learn.htm

    OTOH, if you sample with a PIC using a phototransistor, you can get the carrier frequency and eliminate any guesswork.
    Last edited by dhouston; - 27th August 2007 at 15:48.

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