Arduino-compatible Maple Rev. 5 (Leaflabs, http://leaflabs.com/)
that is based on ARM (Advanced RISC Machine) processor family
providing a 16-bit PWM output (dynamic range of
≈4.8 log units).
Given that the hardware design of Arduino is open-source,
advanced users can modify the existing solutions and design
Arduino-compatible (for the current list of compatible boards
see http://arduino.cc/playground/ Main/SimilarBoards) boards for
example with improved timer functions allowing higher dynamic
ranges for light output.