New DTMF based project for advanced communications

Thread Starter

Elijah Lingbanan

Joined Jul 28, 2015
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.


Joined Aug 21, 2008
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.


Joined Sep 10, 2007
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.