On 05/22/2017 10:23 AM, Doug Ingraham via cctalk wrote:
  For even less power would be to use an Arduino
(probably a
 Due) because then you are talking less than 4 watts. This
 would be about 35 cents per month. I wouldn't want to run
 my Straight 8 24x7.and pay the power bill.  
Or, a Beagle Bone Black, also about 3-5
W depending on CPU
load, but has a 1 GHz 32-bit RISC processor.
Definitely slower than a top of the line desktop, but
certainly usable.
Jon