Not wanting to hijack the thread, but there is quite similar product available using more capable device LPC4370 in similar price range for EUR 18:
http://www.embeddedartists.com/products/lpcxpresso/lpclink2.phpThe board is used for the basis for the mixed signal oscilloscope, logic analyzer and signal generator:
- 11 channel logic analyzer (up to 100Msamples per second)
- 2 channel oscilloscope (up to 60 Msamples per second, 6MHz BW)
- 11 channel digital signal generator (up to 80 Msamples per second)
- 2 channel analog signal generator (40kHz BW)
However, the adapter board containing the op amps and signal conditioning costs around 99 EUR:
http://www.embeddedartists.com/products/app/labtool.phpThere is a schematics and software available for the adapter board which can be used as a basis for a DIY project.