This project came out of the Hackathon LVL1 had in June 2012. The rules were minimal but had a big impact on the end product. The competition ran from noon Saturday till noon Sunday, so 24 hours. We had access to all of the tools at LVL1 plus we could bring our own tools, but we could not have any of the tools integrated as part of the final project. Each team was given an Arduino and a bread board. All other material has to come out of the LVL1 boneyard (this is the collection of stuff that has been donated for the purpose of hacking in any way we wish.) The goal was to make anything you want.
We had the weeks leading up to the event to look around the boneyard and think about what we thought we could make. We started with a list of things we wanted to make then limited that down to things we thought we had the parts to make. We tentatively settled on a 3D scanner. We knew we had all of the parts to make it but there was no guarantee that they would still be there the day of the hackathon as the boneyard was still being used normally by the hackerspace.