Introducing the serial cradle

Visor cradle and its RS-232 interface

Who needs a serial cradle

The Handspring Visor / Visor deluxe is usually shipped with a USB cradle but this fairly recent interface is not supported by old PCs or PCs running under Windows 3.x, Windows 95 or Windows NT4. In that case, HotSync can be done only via a RS-232 connection. Fortunately, the Visor supports both serial and USB interfaces but its serial inteface is neither RS-232 compatible nor TTL compatible. This project is aimed at building a small circuit that fits into a standard USB Visor cradle and that adds RS-232 capabilities. Note that Handspring sells a serial cradle but if you have more time than money, do it yourself and you will have a 2 in 1 cradle !


All information and diagrams are provided free of charge, as is, and without any warranty. I am not responsible for any harm that could be caused. I am in no way, shape, or form affiliated with Handspring.
Home | Main frame | Introduction | Schematic | PCB | RS-232 reference | Resource

(C) 2001 Big Lol