Different forms of Arduino:
microview
microview at sparkfun
microview pinouts
see RPi idea
see FadeAllArray
another example page
sparkfun-inventors-kit-for-microview
Learn about widgets and spin. The aim of my temperature sensor read example was to scroll sucessive vales
schematic pdf
ftdichip FT231X datasheet
Above device can supply 50mA at 3V3.
Question : Will this device work nicely with 3V3 devices such as RPi? Test by connecting TX of RPi to RX of FTDI...