[Jacek Fedorynski] had an old Magellan/SpaceMouse 3D mouse with a serial interface which made ... So he built a low cost, simple adapter to use his RS-232 Magellan/SpaceMouse with modern software.
To find out, [John] embarked on a mission to build a USB adapter ... the Depraz mouse utilizes an unusual male DE9 connector rather than the more familiar female DB9 used in RS232 serial mice.
Earlier this week, open-source developer and YouTuber TheRasteri announced a single-PCB open-source USB to HID adapter project ... nearly every modern USB mouse and keyboard, including those ...