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AVR1908 

8275A-AVR-04/10 

2 Getting started 

2.1 Programming the firmware for the Xplain board 

In order to get the QTouch board up and running the AT90USB1287 and 
ATxmega128A1 device mounted on the Xplain board needs to be programmed. The 
required firmware is included in the .zip file following this application note. For a 
detailed description about programming the Xplain board, please refer to application 
note AVR1921. 

2.2 Connecting the QTouch Xplained 

The QTouch Xplained needs to be connected to the Xplain in order to demonstrate 
QTouch and the QTouch library features. This section provides all information needed 
to connect the QTouch Xplained add-on board to the Xplain mother board, and then 
connecting the bundle to the PC host in order to use it with QTouch Studio. 

2.2.1 Connecting the QTouch Xplained to Xplain 

The QTouch Xplained uses four 10-pin headers to connect to Xplain. This makes it 
easy to connect and disconnect the QTouch Xplained from the Xplain board. Note 
that the female SMD mounted pin-headers might get damaged if not handled 
carefully. The plastic insulation might come off and exposes the conductors.  Refer to 
Figure 2-1 for an illustration how to connect the two boards together. 

  Attach the QTouch Xplained to the Xplain board. The QTouch Xplained is 

connected to the Xplain board by connecting the four 10-pin headers on the 
QTouch Xplained (female) to the four 10-pin headers on the Xplain (male).  

  The text orientation should be the same on both kits.  

  Ensure that all four pin headers are properly connected. 

Figure 2-1 

Connecting the QTouch Xplained to the Xplain board 

 

2.2.2 Connecting the QTouch Xplained & Xplain to the PC 

The Xplain board must be connected to a host PC using an USB cable. The USB 
connection is used for communication between the QTouch Studio and the 

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