HP 200LX USB / Power Supply dongle
I’ve got a 1998 HP 200LX palmtop. Wikipedia describes it as:
a personal digital assistant introduced by in 1994. It was often called a palmtop computer, and it was notable that it was, with some minor exceptions, a MS-DOS-compatible computer in a palmtop format, complete with a monochrome graphic display, qwerty keyboard, serial port, and PCMCIA expansion slot.
What I wanted was a single “dongle” that will allow me to connect to the palmtop over USB as well as power/charge it. Unfortunately it require 12V DC to charge or run the plamtop so I’m going to need to use a DC/DC boost converter.
Some links for those that want know more about the HP 200LX
Design
Posted in Hardware Design at April 17th, 2011. 2 Comments.