psion – Room 7609

Psion Series 5 USB keyboard

My take on the old “re-purposing a dead Psion 5’s keyboard as USB keyboard” 😉 Using parts from dead Psion Series 5 and 5mx PDAs and an Arduino micro-controller.

Aquiring some late 1990s PDA keyboards to revive with USB and Bluetooth connections… The Psion Series 5 (like all the Psion PDAs!) was renowned for its excellent mechanical design and the keyboard of the Series 5 was peak!

Clockwork uConsole – a ready made CyberDeck?

My experiences when my Clockworkpi.com uConsole arrived earlier this month – assembling the ready-made cyberdeck and some tweaks & challenges to work around some shortcomings…

PSION MC400 emulated – at last!

A few years after initially posing the question, an answer…. YES, the MC400 is emulated (in MAME 0.273 and later).

Latest Raspberry Pi – Psion MC400 Sidecar update

Super-cute Raspberry Pi Zero 2W based Psion-sidecar in a flirc case with 4 port USB hub underneath and an e-ink display on top 😀

Setting a 1990s PDA clock via GPS

Setting the time on my 1990s Psion Series 3a PDA via an attached GPS and some OPL code to grab UTC time from the $GPRMC sentence…

PsiWin & MCLINK USB-RS232 adapter compatibility issues

Explaining compatibility issues between USB and retro Psion computers that use RS232 when using USB-RS232 adapters like FTDI & Prolific

“These aren’t the ROMs you’re looking for…”

The latest MAME release (0.253) is the first to support some of Psion’s 16-bit (SIBO) architecture platforms. Series 3a/3c/3mx, Siena and Workabout/mx are now partially supported.

Back to the source: Taking an emulated MC200 back to Psion’s old HQ in Harcourt St

Taking an emulated Psion computer back to its spiritual home – the MC400 emulation goes to Harcourt Street, London.

More retro Psion: The HC120 “corporate handheld”

Re-visiting the “corporate handheld” computer that is the Psion HC120,

LCD Cakes – can baking an old LCD screen really fix it?

Can baking an old LCD screen fix it? How about rubbing it with a cotton bud? I tried a couple of suggestions I found on the internet to fix blotches on an old Hitachi monochrome LCD screen from my 1989 Psion MC400 laptop.