I hope that I am in the right place to be.. So I have my new project that I want to work on which basicly was to use a DTMF module with an Arduino to control a door. I call on my phone a specific number "15" as example and the DTMF module recieves it trhough another phone and the Arduino is going to read the code and give command to open the door... So I thought it won't be too hard to find it out. ( i am a beginner ).
So I went out and wanted to get the stuff I thought I needed. I couldn't get a DTMF decoder (no IC nor the module).. It might come over a while.. But the guy said to me I am pretty sure the Arduino itself has an option to do the DTMF Decoding. So I looked up on the net ( still looking ) and I found some things about DTMF in Arduino but couldn't understand it much... Cuz it was just the coding and not an example/guide..
So my question is: Am I able to turn the arduino itself into a DTMF decoder and do what I said above? And if so can you give me more information/explain or share places to look on?
If there is a way I don't want to wait till the 8870 arrives..