So about a year ago my son's Boy Scouts troop agreed to work on their robotics merit badge. I being the resident computer and electronics expert got handed to job. There is no guide. No instructions. We choose to do a Useless Box, because it is fun, it satisfies the requirements and it has tons of room to grow; for them to make it their own. Having never really taught to a group before I immediately learned some lessons. I'm still not very proficient on nipping talk back or chatter but I'm not trying to be a drill Sergeant. Most importantly having a plan each time I stood in front of them, I found helpful. The feat here is not only do we need to program this thing. We need to Wire it, we need to build a box for it and then we have to put it all together. It's like 5 in 1. Then multiply that by 5 teenage boys and I think one can see how it might take a year. From the start, a part of my goal was to assemble a parts list and write up one of those really awesome how-tos like you see on instructables.com. I belong to a number of communities and know a number of people who are looking for ways to get their young ones interested in electronics. It took until just a month or so ago for me to complete my example one and finish up a write up. It was when I realized that last year my goal was to demo them at our boy scout annual Christmas party that I realized this project needs a complete date. Something firm that will motivate them. I can say that today, one in a nearly complete, functionally finished state, and four more that are just behind and I'm ready to take the back seat again for a while. I'll add a link to my write up here, for anyone who is interested. I would like to reformat a bit but I think I have it well enough written that anyone could follow along.