New DTMF based project for advanced communications

Discussion in 'The Projects Forum' started by Elijah Lingbanan, Jul 29, 2015.

  1. Elijah Lingbanan

    Thread Starter New Member

    Jul 28, 2015
    6
    0
    Hi, i want to use DTMF tones to be usable in a new way and also in communications application. Can you give me some idea that i can make as a project that is cost-effective? thanks.
     
  2. Ramussons

    Active Member

    May 3, 2013
    557
    92
    Telecommand
    Remote control thru' phone lines (wired and wireless)

    incidentally, both are not new. :rolleyes:
     
  3. blocco a spirale

    AAC Fanatic!

    Jun 18, 2008
    1,440
    368
    You're over half a century behind the curve.
     
  4. DickCappels

    Moderator

    Aug 21, 2008
    2,664
    634
    Remote control seems like an obvious choice. You could command various devices be switched on or off or setting such as a thermostat setting can be changed by using various codes.
     
  5. Art

    Distinguished Member

    Sep 10, 2007
    785
    61
    Communications will be dissappinting.
    It takes a fair time to decode each tone with hardware,
    and I imagine software doing it quicker to be error prone.
    I audio coupled a DTMF synth with a Motorola decoder chip with opamp driven mic.
     
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