I can be reached via email to paul [at] sullivan [dot] za [dot] org
I work in Information and Communication Technology (ICT) and live in Dorking, Surrey.
This is what I do with some of my spare time - within the last 12 months
- Creating a Doppler Radar Alarm with a Raspberry Pi and RCWL-0516
- Streaming data with HTTP/1.1 Transfer-Encoding: Chunked
- Prepared statements with PostgreSQL & NodeJS when using idleTimeoutMillis / connectionTimeoutMillis
- 12v off grid solar to supply only low voltage DC needs
- Short video production - I make holiday videos no one watches
- Realtime and historic Geospatial data. I've been using OsmAnd to log live route data to a web service and Bings's maps API to plot that data with JQPlot. In late 2019 I've finally integrated all this knowledge into a Follow Me system with it's own dedicated APK.
(but still periodically re-visited, or some how connected)
- Offloading / parallelization of compute tasks to NVIDIA GPUs using CUDA, specificlaly monte carlo simulations for Structured Product underlyings
- Mobile device security - in the light of the huawei (snooping) kerfuffle this is particularly interesting. AKA LinageOS on my S5
- CAN Bus Hacking and OBD-II adventures, mostly on my Volvo C30 1.6d DRIVEe
- Scene monitoring with a Raspberry Pi (4 Model B) + camera using ImageMagick's compare to recognise passing motor vehicle with a bash script. (This isn't motion detection, and is a better place to start to understand than OpenCV base solutions)
- Multi-factor Authentication - particularly client-side SSL certificates and TOTP as posession factors
- A study of how not to DDOS your own distributed web application
- Open source telephony, particularly around mobile applications
- Using the Raspberry Pi as an Ocilloscope.
- Getting myself back up and running after installing CyanogenMod on my S3
- Nagios, as a system monitoring / exception reporting tool - notably to check more realistically than the default "is it alive".