He first built a breadboard decoder circuit that would light 1 of 16 LEDs depending on the detected button press. ... Be sure to stick around to see his DTMF decoder circuit in action.

Be sure to stick around to see his DTMF decoder circuit in action. Continue reading “Simple DTMF Decoder Pulls Numbers From YouTube Videos” → Posted in Arduino Hacks , Misc Hacks Tagged ...

This DTMF decoder uses the MT88L70, powered by 3.3v and interfacing with 3.3v GPIO to decode the touch tone keys. It has an RJ phone jack and 600:600 transformer to connect to a phone line to pick up ...

The DTMF decoder circuit detects the tones generated by pressing keys on the keypad and converts them into digital signals that the microcontroller can understand. About. DTMF-controlled mobile robot: ...