Funduino TouchKey USB Shield V3.1

With Makey Makey Kit, you can turn everyday objects into touch areas and combine them with the internet. With Makey Makey, you can use just a few things You can turn anything into a key by attaching an alligator clip. You can turn anything into a mouse and keyboard with this arduino shield.

It uses touch as the input method, using a dual touch point touch switch, touch to connect to two touch electrodes. terminal and a ground terminal. There must be a current flowing through these two touch electrodes so that it can detect a touch event by detecting the current.