ok thanks a lot .But i can't find the exactly good resistors valors.You say it's better to choose more(I guess It 's just for the output resistor) ...
i have to choose between : 180 or 220 KOhms for the 191 one
and 27 or 33 for 30 KOhm
1/Which one seem to be the best for you?
Is that true that if i took the small one (180 and 27Kohms),my leds will be more réactives to the sound ?(this is a bad sentence lol)
Concerned the output,i have a 47 Ohms (it will be good .)
but i don't understand how you got this result ??!!...
I explain :
for six red leds :
U=R*I (I = I led1+I led 2 ...)
R=U/I (U=5-1,8=3.2)
R=3.2/(0.02*6)
R=26,7 Ohms
2/I must be wrong ?
It was my last request ...