noob question, I know. I'm setting up a 16 channel LED build (which will eventually be using the Meanwell LDD drivers and CREE Leds). But in the meantime, I JUST received my adafruit 16 channel PWM/Server board (the PCA9685 based one) and I'm starting to play with the PWM dimming code.
I assumed that I would be able to -- for testing -- be able to connect some of those cheap 2 prong (cathode/anode) LEDs to the board to test my PWM code.
I've got the 3.3v feeding the PCA9685 board's PWM, and I'm hooking the ground back to ground.
Wouldn't the 3.3v PWM be enough to give me an indication to how my code is working? As it stands, the LEDs don't light up at all.