I got mine and used it for a school project with an ATmega 1284. The joystick comes with no datasheet, no information, just a bunch of colorless wires that give no details on which controls, which direction or which . Earth. Other joysticks come with colored wires so you can find information online about which wire does what, but not for this product. Also, screwing on the top of the sphere requires some tools on the side as it's almost impossible to do by hand.