QTouch® Button

There are two self-capacitance buttons available on the ATtiny817 Xplained Pro board, which can be used as input buttons for an application. These QTouch buttons are intended to be driven by the built-in Peripheral Touch Controller (PTC) of the device.

To get started using the QTouch buttons and the PTC, open the QTouch Tiny817 Xplained Pro Selfcap Example in Atmel Start (http://start.atmel.com/#examples).

Tip: The touch buttons in the kit are placed on the inner layers of the PCB and have a very small overlay. Due to the short distance from the sensor to the touch area, it might be oversensitive. Different overlays can be used to avoid saturation of the sensor.
Table 1. QTouch® Connection
ATtiny817 Pin Silkscreen Text Shared Functionality
PA7 QT BTN1 EXT1
PA6 QT BTN2 EXT1