Although this is by no means a new hack – it was made circe 2002 – this wooden CD changer is an interesting piece of machinery. The whole thing is a simple pick-and-place device. The gripper is brilliant in it’s simplicity, using only a rubber band, wood, and a solenoid. It grips the CD by the middle hole, picks it up, and the assembly then travels to the CD tray or the stack. Everything works with DC motors and string, and several micro-switches make sure everything is picked up and dropped in the correct position.

Although we may think this is a pretty cool device, [Matthias] is quite humble about his machine’s abilities. In his estimation, although one could probably duplicate 12 CDs with relative ease, if you really wanted to duplicate a large number, it’d be best to buy one. Maybe he works in manufacturing.

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Let’s face it – gamers have a reputation for being pretty lazy. In the most recent episode of his web series, [Ben Heck] takes on the stereotypical gamer role and cranks the laziness factor to 11, lamenting the fact that he needs to get up off the couch to swap discs in his Xbox 360 console. Never allowing laziness get in the way of his hacking, he springs into action, hauling off to his shop in order to construct an Xbox DVD changer system.

He grabbed a pair of CD changers and popped them open to see how they operated. After choosing the best candidate based on its CD loading method, he got to work disassembling the changer. The old CD player and its guts were removed, which he replaced with DVD drive components ripped from his Xbox. Quite a bit of trimming and tweaking was required to swap out the components, but it seems that [Ben] got things working just fine.

With the mechanical portion of the project out of the way, he dug into the electronics. The CD changer had no way of knowing how to interface with the Xbox and vice versa, so [Ben] had to devise a way for the two devices to communicate. He used an Arduino Uno to control the systems, triggering the CD carousel only when the Xbox thought it had its drive slot opened.

While the system looks a bit unpolished, and the controller quite bulky, we love this thing!  No matter if you are lazy or not, jamming these two devices together is exactly what hacking is all about.

[ross], a reader is working on a CD changing and ripping robot. The arm picks up a CD and the platform then rotates, stopping in front of the tray to drop the CD. A JB welded tire pump provides the vacuum pick up, while a brake light acts as a resistor to trick a PC power supply into operation. A Motor Shield beefs up an Arduino in order to drive the servos.

[nophead] put this creation down to its final resting place, but it still deserves some attention. A Motorola MC6809 ran the show while a stepper driven robotic arm tipped with a suction cup fetched the selected disc. [nophead] has an interesting blog covering his work on building a 3d prototyping machine. The goal is to use it to produce a reprap, but he does a nice job of covering design problems and his attempts to solve them.