I like the look of this board, especially the triple use - as a standalone board, as an Arduino interface board and as a Pi interface board.
I think i will put this to use as a power supply logger testing multiple rail power supplies in the products I repair, this will include current (up to 15A) and triple voltage outputs, I will include temperature measuring in addition.
I won't be looking for actual voltage output, but for voltage fluctuation over the testing period. So either the ARM board or a Shield will provide the ADC and possibly digital temperature conversion and the Pi will perform the saving to USB/SD card and fancy display tasks.
I have a hankering for RISCOS, so the Pi will either be running this, or Adafruits offering.
Colin