Bringing an old analog (1G) Cleartone CTN9000 mobile phone handset back to life with the aid of a software-defined radio (Lime SDR) and osmocom_analog.
Tag Archives: electronics
Hacking up the Psion SIBO SDK DOS debugger
Poking around in the old Psion SIBO SDK debugger – which looks like it’s based heavily on the MC’s GUI…
Repurposing an old Psion MC400 laptop keyboard with Teensyduino & USB
Re-purposing an old Psion MC400 laptop mechanical keyboard from 1989 to work with USB via a Teensy LC (Arduino compatible) microcontroller
Grafana, Influxdb & DS18B20 based home temperature monitoring with Raspberry Pi
Update on the Raspberry Pi/Grafana/Influxdb/DS18B20 temperature monitoring network I put together 2 years ago…
One of The Many Promises of 5G – Accurate Time Transfer
One of the many promises of 5G is accurate time-transfer. I spent a couple of days travelling around the North West of England testing exactly how accurate available time transfer was from commercially deployed 5G installations.
10 years of Raspberry Pi
So the Raspberry Pi has been around for 10 years… everyone’s favourite credit-card-sized computer does just about everything
Emulating the Psion MC400
I read an online post about creating an “MC400 emulator”. That got me thinking about the ROM, and the 28F010 flash chips that realise it…
RS232 flow-control & handshaking – Psion MC400 retro communications
Connecting my retro-laptop to the internet via 2 x RS232 serial connections to a Raspberry Pi… and defeated (for now) by lack of hardware flow-control signals 😦
5G on the moon?
NASA has ambitions to build a comms infrastructure on the moon using 4G LTE technology…
Magellan GPS 315 vs. The Future – part 2
Some older GPS receivers can’t compute dates properly thanks to the original GPS system employing an epoch with 10-bit week number… a new epoch starts every 1024 weeks!
Room 7609 