I am noob, but looking a way to improve myself (just a bit). Maybe you will help
I have these items:
//Type of Arduino board its not necessary for this question.
Also attaching mine connection diagram.
Then I press a phone button decoder not reacts at all. Looks like he is not receiving any signal. I have done the same with mine cell phone everything works fine. What I am doing wrong?
Looks like all necessary capacitors, resistors and etc. is already installed or I still need connect something?
Thanks for you time.