I have several LED lights (with different driver ICs), several different standalone LED drivers, most of them seem to prefer logic level PWM dimming on their dedicated dim/enable pins. I was wondering can (or would there be any issue) using a single PWM output from an Arduino for multiple drivers?
One of my lights has 3 x PT4115 driver circuits each powering 3 LEDs on a single aluminum PCB. I can change the current sense resistors to lower the constant current, but I was wondering if instead I could take advantage of the PT4115's PWM dimming.
One of the concerns about using PWM on 3 drivers would be unequal dimming/brightness, also not wanting 3 PWM pots for one light, or extra wiring in tight space etc. I was hoping using a single output signal might avoid or limit those issues. I'd also prefer to keep as much of the light and Arduino as standard as possible, and modular for easy change/repair etc.
Is this possible, or is there another way you could suggest?