help with using NV10 note acceptor in Arduino board

Projects General Guidance
1

Hi

I'm working in my project and I'm using a NV10 note acceptor

i need to use the output pin of the pulses to define the notes

can anyone help me with how do i can define the pulses of each note and which pins to use.

i found some people who did the same idea but i did not really got the idea

and i will share the links at the end

Many thanks.

Links:

1-

NV10 note acceptor and arduino

2-

pulses use