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You are here: Home / Topics / DTMF Tone decoder problems

DTMF Tone decoder problems

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Electronics › Electronics › DTMF Tone decoder problems

  • This topic has 3 replies, 2 voices, and was last updated 12 years, 7 months ago by AJISH ALFRED.
Viewing 4 posts - 1 through 4 (of 4 total)
  • Author
    Posts
  • November 22, 2012 at 1:10 am #1999
    Ren
    Participant

    Hi guys Help please, I constructed the circuit given in the data sheet of the cm8870pi ic, but i have a problem some times all the output on the BCD pins Q1 ~ Q4 goes high when the circuit energize. why is that and how to solve it or is it that the output is inverted? ….thanks…

    November 22, 2012 at 5:30 pm #8781
    AJISH ALFRED
    Participant

    Hi Ren,

    please post your circuit here so that we can help you

    November 24, 2012 at 1:43 am #8784
    Ren
    Participant

    Well Ajish thas for the help, but I got my decoder up and running, and my h-bridge and motor going, now is the hard part I’m trying to interface the pic16f690 (demo board chip ) to and 16×2 LCD to show the status of each device.

    November 24, 2012 at 6:05 pm #8790
    AJISH ALFRED
    Participant

    Keep up the good work Ren, all the best

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