The process is not too bad if you have ever soldered before. The programming part is pretty basic also. I did 14 or so last year and had the entire thing down to minutes. The longest wait is making them waterproof. I take two part super clear epoxy to cover the boards so moisture cannot get in. I will have pictures once I get going this year. The effect is just like in the video.I'm particularly interested in the "circuit boards with Trinkets" for the candle flame like glow!
Looks just like this, but I started putting the LED array to the top of the pumpkin, instead of the bottom. Notice there is a wind like effect ever so often? That is programmed in and very much random.