Signal amp for vu meter- help!
I am creating a VU meter with my arduino board soon. I would like the vu meter to output the same amount of light even if the input audio is lower or giher (if i change the volume, I dont want the vu meters range to fluctuate). Does anyone know of a device that will maintain a constant signal voltage regardless of whether the inout signal is high or low?
I'm not fussed if this amplifying circuit distorts the signal a bit as I am not actually using it to listen to afterwards.