You could use the Labjack U12 and piggyback.  The piggyback will need to be built; there is a schematic in the SatPC32 files.  The piggyback would cost maybe $15 and the U12 about $150.

73,Charlie AJ9NOne of the ARISS mentors In a message dated 2018-12-19 12:39:57 Eastern Standard Time, jimki6wj@sbcglobal.net writes:

What choices are there  for G5500 rotator control via  USB? Recently tried ERC M  but it failed  and support is  poor! Jim_______________________________________________Sent via AMSAT-BB@amsat.org. AMSAT-NA makes this open forum availableto all interested persons worldwide without requiring membership. Opinions expressedare solely those of the author, and do not reflect the official views of AMSAT-NA.Not an AMSAT-NA member? Join now to support the amateur satellite program!Subscription settings: http://www.amsat.org/mailman/listinfo/amsat-bb