I got the arduino uno starter kit, and I'm trying to build project 7 - Keyboard instrument, which is pretty simple, but not working
well to me.
The circuit is as follow:
Now, I build this exactly (a few time, to verify myself).
The problem, is that:
when I push one of the momentary switch, the value that I see in the serial display (via A0 pin) is: 0,
except one switch: the bottom one. (then i get voltage).
Now I don't know how to check it, and what can be the problem.
I'll glad to a little bit help here.
Thank you all,