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  1. #1
    Join Date
    Nov 2006
    Location
    Murrieta, CA
    Posts
    62

    Question Using Pic to listen to audio tones from car radar detector

    So i have Uniden R1 radar detector. This unit as well as many others has an audio output port for external speaker. I would like to feed that output to a pic to read the different tones for the bands K/Ka/Laser. each band having a different tone. I will use a PIC 16F628A (16F877A if i need more ports).

    Thanks.

  2. #2
    Join Date
    Mar 2003
    Location
    Commerce Michigan USA
    Posts
    1,077

    Default Re: Using Pic to listen to audio tones from car radar detector

    I would try building a voltage comparator and feeding the audio into it producing a square wave then reading the frequency.
    Dave Purola,
    N8NTA
    EN82fn

  3. #3
    Join Date
    Nov 2003
    Location
    Greece
    Posts
    2,705

    Default Re: Using Pic to listen to audio tones from car radar detector

    What exactly you need the PIC to do? Produce an discrete output for every tone?

    If yes, maybe Capture Compare could help with this.

    Ioannis

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