Update

AC_SCAN.C Added.
This is configured to use a CSTech PIC28 development board
(https://www.cstech.co.uk/pic-kits/pic28/) to read in the difference
between 2 timers and print the output to the USB port (Configured as a
virtual serial port over USB).
Updates

Updates made to correct some calculations and to simply send out the
results in a single CSV entry without adjustments which can be done at
the client.