AVR-Chat

--- In AVR-Chat@yahoogroups.com, "negink63" <negink63@...> wrote:
>
> Hi
> I want to make a tuner an I do not know how I can measure the frequncy 
> of an analog signal with AVR. I will be really appriciated If somebody 
> could help me.
>

you can flash an led at the frequency to which you want to tune the
string.  when the string is vibrating at the correct frequency it will
appear to be still when illuminated by the led.