The original PCB of makey makey is not very friendly to my son, and the wrist band for EARTH is rediculous even for an adult.

So I create this! A game pad style case of makey makey!

Even more I apply copper tape to the back and both sides of the case and connect it to the EARTH with short wire. When hold the case properly, the hand is naturally the EARTH.

Along with the printed case, you will need a short wire of EARTH (either using bolt and nut, or using soldering iron) and a strip of copper tape and few round-head M3*6.

=============================================================

makey makey是个不错的好板子，配合scratch软件，超级适合小朋友入门计算机编程。但是板子本身设计太不适合小孩了——裸露的元器件、尖锐的边角、还有脑残风的接地腕带。
因此我就开发了这个长得像游戏手柄的外壳，还在外壳的背面贴了铜箔胶带并用导线将铜箔胶带和电路板的地联通，这样抓握这个手柄的时候就自然接地了，再也不需要腕带了！！！

除了打印外壳以外，仅需要一节导线接地、一条铜箔胶带和几个圆头M3*6用于固定电路板。