I am trying to build an android based application. It will have interfaces to a DAQ and a signal source(both preferably on SPI) which require minimal latency; a thermal printer, a USB flash drive and around 15 GPIOs for control. It will also have a USB interface with PC. Can anybody suggest whether sabre-lite or Wand board will be suitable for this. My main intention is to use the board which has most of the drivers for these interfaces available.