Arduino Touch Shield

 

The MPR121 IC is a great way to create simple capacitive touch interfaces and is now easier to incorporate into Arduino projects with touch screens.

There are touch shields, 3 electrode connection heads as well as  9 capacitive touch pads. With these shields, you can have a total of 12 touch buttons.

An on-board logic level converter allows working with 5V and 3.3V Arduino boards. You can just solder some header pins and plug it onto the Arduino to create a suitable input device. Before you start, see the code examples below.