ORVL is a portable (C-language) control program for Orvibo (S20) devices.
ORVL runs on UNIX, UNIX-like (including macOS), VMS, and Windows systems, and has a command-line interface.
/ftp/orvl/orvl-0_2/orvl-0_2_src.zip
/ftp/orvl/orvl-0_2/orvl-0_2_win.zip
All versions of ORVL, including older and experimental ones, may be found at the archive: /ftp/orvl/
FTP access is also available at: ftp://ftp.antinode.info/orvl/
Hardware notes describing one cause of failure in the Orvibo S20, and how to repair it. /ftp/orvl/S20_power.txt
Photograph of original and replacement power converters.
/ftp/orvl/S20_Pwr_Cvtr.jpg
For scale, the distance between the "V-" and "L" terminals on the
original (BE5V01) converter (or the "OUT/-/GND" and "IN/L" terminals on
the replacement (WX-DC12003) converter) is 0.8 inch (about 20mm).