help needed on LED music box
I've done a lof reading and many people have suggested using inductors as low-pass filters. New to electrical things, I am really unsure what to do.
My design in mind is with 24 LEDs, 12 blink to bass, 8 blink to mid range, and 4 blink to high range. I'm planning to use a 12v DC charger with LEDs specs of 30mA forward current, 3.5V forward voltage. I understand having a VR will make the LEDs more consistent.
Can someone possibly draw me a schematic with the right resistors and inductors? help would be greatly appreciated.