High frequency PWM video light controller and channel mixer
I finally got around to designing a circuit to control my smaller bi-color 60W 3200k/5500k LED panels. I used an arduino UNO and some high power NPN transistors to allow one of the two knobs to vary the intensity of the panel and the other for controlling the color temerature.
The photo is of the test circuit. I'll be building it into the final panel in a day or two and it should be ready for my commercial photography client next tuesday in Charlotte, NC!