Welcome, Ignite/Dorkbot Science Fair Party Goers. Here are details on the two projects I had with me at the Science Fair.
I used the open-source Arduino microcontroller. Arduino programs are called “sketches.” I keep my Arduino sketches on the collaborative source-code repository GitHub, in my Arduino-Sketches repository. You can browse the code in a web browser without installing Git, so go check it out. And then learn Git and post your own sketches.