How to UV-modify the "USB fading star" instructable? Answered
I have built sooraj619's "USB fading star" circuit (https://www.instructables.com/id/USB-fading-star/), but with UV LED's instead of red. I hadn't thought about the fact that red LED's have a quite low voltage need (about 1,8-2 volts) compared to UV LED's (3.2v – 3.8v). But it is a problem. The UV LED's (24 pcs) aren't even close to full light intensity. They do, on the other hand, pulse in the right slow way.
Does anyone know in which way the circuit could be changed to make the LED's light up properly without the LED pulsing being all disturbed? The circuit input voltage should remain 9 volts though.