Hi all, This is my first post. I am a newbie with Arduino.
Question: Is it possible to decode DTMF in software running on the Arduino? I plan to have a 3.5mm Jack connected somehow to the Arduino and decode the incoming signal. I intend to use the Arduino Nano. The tones will be coming in relatively slow so time to process is not a major factor. The incoming DTMF tones will act as a password to activate each of the relays/outputs.
Any advice, code example would be great. Thanks in advance.