The project owner hasn't added main project image yet.
You've always wanted to output analog voltages from a microcontroller, the MCP4725 is the DAC that will let you do it! The MCP4725 is an I2C controlled Digital-to-Analog converter (DAC). A DAC allows a digital device like a microcontroller to output analog values like a sine wave. Digital to analog converters are great for sound generation, musical instruments, and many other creative projects!
Project description, more information and ordering can be found at https://www.sparkfun.com/products/8736
MCP4725 Datasheet: http://www.sparkfun.com/datasheets/BreakoutBoards/MCP4725.pdf
Example I2C Code: http://www.sparkfun.com/datasheets/BreakoutBoards/MCP4725-Example.zip