Well, all my learning is mostly self-taught. I have an awesome book called \"Robot Building for Beginners\" by David Cook. I spend a lot of time on solarbotics.org, building kits, and just experimenting. There are lots of hobbyists out there willing to share their knowledge - you don\'t need any formal classes to build cool electronic circuits.
This LED panel was very simple - just a matter of figuring out how much resistance was needed for each LED. They require more voltage as you go from red to violet. Red only needs about 1.5 V, but blue needs 5.5 and the violet can tolerate 6! The violet was challenging - I originally had it so bright it appeared white, so I experimented with different resistor values until I reduced it down its pinker value. My soldering here is pretty messy, but I was camping with limited supplies and hurrying in the middle of the night - it didn\'t need to be fancy anyway since its only purpose is light painting in the dark.