With this board you get 1. the board 2. demo code (undocumented) 3. a schematic
It's not a complicated board. But to understand how it works I have to spend time trying to read somebody's undocumented code and then go to the schematic so that I can download the DAC data sheet so I can understand how that works. Why can't somebody from this company just spend an afternoon and write up some basic documentation?
Update-Will look forwards to the additional documentation. Product works as advertised and is very nicely executed.
The Arduino Mega example is a little cleaner than the Uno example, but we'll get to work on them both up so they're easier to follow. We've also added a link to the MCP4921 (DAC IC) datasheet on the main product description page.
Thanks for the feedback, we're always looking to improve!