What is it? An USB interface for Psion series 5 PDA keyboards. Plug in a keyboard and a USB cable, and use it with any modern computer. Additional keyboards can be supported through firmware change...Read More…
An USB interface for Psion series 5 PDA keyboards. Plug in a keyboard and a USB cable, and use it with any modern computer. Additional keyboards can be supported through firmware changes.
I'm making a upgraded Psion 5mx PDA, and I wanted an easy way to interface the original keyboard to a more modern computer. By identifying itself as a regular USB keyboard, it should work on any modern operating system without using any drivers.
The adapter uses a ATMEGA32u4 CPU, the same as the Arduino Lenoardo. The board comes pre-loaded with the Leonardo bootloader, and also ISP connection pads if you want to use it as a "regular" AVR development board. The keyboard firmware is also written in the Arduino environment, making it easy to modify.
The hardware and firmware are 100% open source. See my GitHub for details.
PROGRAMMING IS REQUIRED! The board is shipped with my own test software. To enable the keyboard mode, you will need to use the Arduino IDE to flash the keyboard firmware from my Github. This is also the method used to adjust the keyboard layout for your region.
On the rear side of each PCB is a small scratch where I had to fix a silly layout mistake. This does not affect the functionality in any way, it is purely cosmetic. All boards are fully tested before shipping.
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I'm a hardware maker based in Malmö, Sweden