I'm making a Teensy-powered lightsaber, and I'm currently trying to figure out how to drive the LEDs.
Is there a way to power an RGB (Luxeon rebel, but you don't need to know that) led assembly ONE (or two) AT A TIME?
I've looked all over for an answer (especially because lightsabers need to be pulsed FAST!), but haven't found a solution.
I need this because my power source maxes at 5V 2A, meaning that if I want to save some power for anything other than the LEDs (ex: the prop shield and the Teensy), I can't 'pulse' all 3 LEDs at once. In fact, one-at-a-time is optimal.
I remember reading somewhere (can't find it now) that because the lightsabers move so fast, I'll want to drive the LEDs at somewhere over 15kHz. If so, then the clock for each individual LED should be at least 45 kHz.
1) Is the pulse frequency advice true (if not, then how fast do I need to pulse it?)
2) How do I pulse the LEDs that fast without overlap?