Makey Makey® Inventors Kit Range - Makey Makey MMBP-CK, Makey Makey MMBP-CK Code-a-Key Backpack - Makey Makey design and built the Code-a-Key backpack to combine the strengths of both the Makey Makey and the BBC mico:bit (sold separately) into your projects in a simple and elegant way. No wad of wires, breadboarding (unless you want to), or complicated circuits. The Code-a-Key backpack enables the micro:bit to trigger up to 6 keypresses and full mouse control on the back of your Makey Makey. On top of that, the micro:bit can read if you have pressed a key or used the mouse and respond in any number of different waysdisplay an image on its display, play a sound, or even control a servo motor. Makey Makey MMBP-CK Code-a-Key Backpack