AVR1908: qtouch xplained hardware user's guide ? xplain compatible top module for atmel? capacitive touch - qtouch? - two buttons - one slider - one wheel ? requires download of - atmel qtouch library software - avr qtouch? studio for visualization of data (debug frontend) - flip (flexible in-system programmer) 1 introduction qtouch xplained is an easy to use low- cost evaluation kit, which demonstrates qtouch and the qtouch library features. the qtouch xplained utilizes the xplain to do this. the kit demonstrates how a qtouch solution requires only a very simple circuit design and a minimum of external compon ents. it includes support for eight qtouch channels: a slider (3 channels), a wheel (3 channels) and two keys (1 channel each). figure 1-1. qtouch xplained evaluation board 8-bit microcontrollers application note rev. 8275a-avr-04/10
2 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 qto uch 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 con nect the two boards together. ? attach the qtouch xplained to the xplain board. the qtouch xplained is connected to the xplain board by conne cting 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 xpl ain 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
AVR1908 3 8275a-avr-04/10 at90usb1287 device, and to power the qtouch xplained & xplain boards. refer to figure 2-2 to see how to connect to the pc. ? connect an usb cable to the xplain board and the host pc. ? if programmed correctly (see section error! reference source not found. ), the board will register as a human interface device (hid), so no driver installation is required for most modern operating systems. ? launch qtouch studio and wait for the xplain board to register. figure 2-2 connecting the qtouch xplained & xplain to the pc 3 quick introduction to the qtouch xplained features the best way to learn how to use the qtouch xplained is to go through the qtouch xplained training. this training is included in the zip file that is distributed with this application note. the qtouch xplained consists of: figure 3-1 slider
4 AVR1908 8275a-avr-04/10 figure 3-2 wheel figure 3-3 buttons
8275a-avr-04/10 disclaimer headquarters international atmel corporation 2325 orchard parkway san jose, ca 95131 usa tel: 1(408) 441-0311 fax: 1(408) 487-2600 atmel asia unit 1-5 & 16, 19/f bea tower, millennium city 5 418 kwun tong road kwun tong, kowloon hong kong tel: (852) 2245-6100 fax: (852) 2722-1369 product contact atmel europe le krebs 8, rue jean-pierre timbaud bp 309 78054 saint-quentin-en- yvelines cedex france tel: (33) 1-30-60-70-00 fax: (33) 1-30-60-71-11 atmel japan 9f, tonetsu shinkawa bldg. 1-24-8 shinkawa chuo-ku, tokyo 104-0033 japan tel: (81) 3-3523-3551 fax: (81) 3-3523-7581 web site http://www.atmel.com/ technical support avr@atmel.com sales contact www.atmel.com/contacts literature request www.atmel.com/literature disclaimer: the information in this document is pr ovided in connection with atmel products. no lic ense, express or implied, by estoppel or otherwise, to any intellectual property right is grant ed by this document or in connection with the sale of atmel products. except as set forth in atmel?s terms and conditions of sale located on atmel?s web site, atmel assumes no liabi lity whatsoever and disc laims any express, implied or statutory warranty relating to its products including, but not limited to, the implied warranty of merchantability, fitness for a particular pu rpose, or non-infringement. in no event sha ll atmel be liable for any direct, indirect, consequential, punitive, special or i ncidental damages (including, without limitation, damages for loss of profits, business interruption, or loss of information) arising out of the use or inability to use this document, even if atmel has been advised of the possibility of such damages. atmel makes no representations or warranties with respect to the accuracy or completeness of the contents of this document and rese rves the right to make changes to specifications and product descriptions at any time without notice. atmel does not make any commitment to update the information contained herein. unless specifically provided otherwise, at mel products are not suitable for, and shall not be used in, automotive applications. atme l?s products are not intended, authorized, or wa rranted for use as components in applications inte nded to support or sustain life. ? 2010 atmel corporation. all rights reserved . atmel?, logo and combinations thereof, avr ? , avr ? logo, qtouch? and others, are the registered trademarks or trademarks of atme l corporation or its subsidiaries. other terms and product names may be trademarks o f others.
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