Atmel AVR1924: XMEGA-A1 Xplained Hardware User's Guide
http://www.atmel.com/Images/doc8370.pdfVR1927: XMEGA-A1 Xplained Getting Started Guide
http://www.atmel.com/images/doc8372.pdf Atmel ATxmega128A1 microcontroller
Read temperature sensor with the ADC
Read light sensor with the ADC
Generate sound with the DAC, amplifier and speaker
Read and write data to the 8MB SDRAM
Eight push buttons to interact with the microcontroller
Eight LEDs to show status information
Board controller that routes data from the ATxmega128A1 UART to the PC via USB
Program the kit via bootloader or an Atmel programmer
Expand the board with Xplained top modules
http://www.atmel.com/tools/XMEGA-A1XPLAINED.aspx