![]() Testing DTMF without microcontroller (Development Board) Led array is required to test DTMFmodule with out development board,if you dont want to test the same itis not required.ģ. Thus DTMF is a low cost solution of controlling equipment from a remote location wirelessly 2. You can use DTMF in such application for example you want to switch on your AC 1 hour before you reach your home so that when you enter your home you get an air conditioned environment. Whenever we dial to a customer care service and there machine responses “Press 1 to do so”, “Press 2 to do so”. ![]() ![]() We have added working demo with two arduino based development board (R-Board & Arduino UNO). This tutorial explains the working of DTMF and how it can be embedded with Arduino based project. ![]()
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