Shoestring FCUSB focuser driver
This driver supports hot-plug (single device of each type).
This driver depends on 3rd party library and is supported on Linux (Intel 32/64 bit and ARM v6+) and MacOS.
INDIGO Astronomy open-source license (3rd party library is closed source).
A non-standard switch property "Frequency" is provided by this driver.
Driver is tested with the physical hardware.