i am making an electromagnetic instrument, - basically a harp with 12 ebows on 36 strings. the ebows drive the strings, and are triggered with an arduino.
here is the prototype driving strings on a piano (i am currently building the harp)
i have worked everything out, but i really want to add a neat feature to the device. i would like to add an amber LED to each ebow, which brightness is controlled by the volume of the input signals coil.
here is the schematic i based my ebows on::
so, when a string is vibrating - the signal of the pick-up coil controls the brightness of the led.
can the LM386 drive a single LED by default? how would i implement this into the circuit? whats the most simple way to do this?
all the best