this post was submitted on 02 Nov 2025
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Managed to connect and login on a RaspberryPi over a null-modem from my Psion 5mx. (infosec.pub)
submitted 2 days ago by foliumcreations@lemmy.world to c/retrocomputing@lemmy.sdf.org
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Did a live stream yesterday, where I tried to set up a serial tty connection between my Psion and an old RaspberryPi I had laying around. Got most of the way there in an hour, even though I had to spend some time troubleshooting what turned out to be me forgetting to plug the damn cable in. But then got stuck on it not accepting my login credentials, just reloading the login screen. I did some reading today, checking Man pages and documentation, and forum posts. turns out I was missing a "-h" flag/argument(not sure about the correct term) in my serial-getty@ttyUSB0.service configuration file. And that I could keep most of the settings there by default, but without "-h" rtc handshaking didn't work.

feeling pretty stoked!

Anyways I will try to do a complete write up once I'm done with my little project.

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[–] XTL@sopuli.xyz 4 points 2 days ago* (last edited 2 days ago)

I had an mc218 for a while, too. Really cool device and an amazing battery life. I'd almost still like to have one.

I vaguely remember that it could even boot Linux from external storage but because of the RAM and CPU, it would not really have been usable. Epic is tiny, though.

[–] DaMonsterKnees@lemmy.world 2 points 2 days ago

This is fire! Very cool, great share, thanks! Keep us posted for more, please!

[–] rcmd@lemmy.world 2 points 2 days ago (1 children)

I see it's an Ericsson-branded Psion, the first to carry the Symbian logo!

Pretty dope, need to try that myself some day. But first I'd like to setup URAN-1 SDR to spawn a DIY 2G cell tower 👀

[–] foliumcreations@lemmy.world 2 points 2 days ago

It is indeed an Ericsson branded Psion. Cool project. I wonder if those frequencies will become open once they discontinue them for regular cell transmission.