Great Maker project for CD burning automation – “Building some sort of gadget that changes the CDs in my cd tray is something I have often thought about. Mostly in the context of ripping my CD collection or burning a backup of my 5 gig photo collection. My first thought was to come up with something extremely simple, with no electronics. Ideally, the motion of the cd tray would trip some sort of mechanism that would eject the CD from the tray and insert the next one. After months of thinking, I still hadn’t thought of a mechanism that had a hope of actually working.” Link.