Hey guys!
I made it! ;D Haha! Not what you think, I didn't make a actual tap tempo as you are imagining it! ;)
But it's a step towards the actual thing! :)
So, I wrote some code to read two taps from a NO SPST switch with the use of the GPIOs, and change the frequency of a PWM output according to the time recorded between the two taps! And after some searching and help from the guys over at the Raspberry Pi forums, I got it working! ;D
And it's working perfectly!
Hope you like it!
Hector