madamAdam

Good to know. Thanks for your help!

Ahhh - so I was thinking about voltage, when I should've been thinking about current. I've used leds without resisters in the past for quick tests and to save heating up a soldering iron, but I must've got lucky...lesson learned. Thanks jmarsh...

I'm making a midi instrument that uses a 12v power supply to power an array of COB LEDs. I am using pololu 5v,2-5a step down voltage regulator (d24v22f5) to provide a 5v power supply for my teensy 4.0, as well as some led drivers and...