Atmel QT1 Xplained Pro extension kit is a set of two extension boards designed specifically for Xplained Pro MCU boards featuring a MCU with a built-in peripheral touch controller.
The extension boards can be used to explore the touch functions on the PTC module in both mutual capacitance (MC) mode and self capacitance (SC) mode.
Figure 1. QT1 Xplained Pro MC Extension
Board
Figure 2. QT1 Xplained Pro SC Extension
Board