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zdimension

Part of zdimension.fr

adventures in computational madness

stories
Everyone gets bidirectional BFS wrong
People really need to stop blindly copying code from the Internet.
https://zdimension.fr/everyone-gets-bidirectional-bfs-wrong/
What's in my Location History?
Getting my location history from Google and analyzing it with Python.
https://zdimension.fr/whats-in-my-location-history/
Analyzing my electricity consumption
Projects
Electricity prices have been steadily rising in France for the past few years, with a particularly sharp increase since the beginning of the Russian invasion of Ukraine. This has led me to wonder about my own electricity consumption and how I could optimize it. The hardware Since 2015, the organization managing the national French power grid (Enedis) has been in the process of replacing the l...
https://zdimension.fr/analyzing-my-electricity-consumption/
Calculator Review: Burroughs C3155 / Sharp QT-8D (1971)
Random stuff
This is the Burroughs C3155: It’s a charming old 1970s calculator rocking a VFD display and an ostensibly 1970s design. It’s also known, maybe more widely, as the Sharp QT-8D, of which it is a clone made by Burroughs for sale in the US. Both devices are pretty much identical, except for the layout of the operation keys. It was also sold in other countries under the names Facit 1115 and Addo-...
https://zdimension.fr/calculator-review-burroughs-c3155/
Attempting to fix an Olivetti M24
Random stuff
I recently came into possession of an Olivetti M24, a PC-compatible computer from the 80s. It’s a pretty cool machine from the time, featuring the venerable Intel 8086 CPU, a hard drive of unknown capacity, and a 5.25” floppy disk drive. I just gave it away to a friend who’s got more free time than me and only after giving it did I realize that it would maybe make an interesting low-effort blo...
https://zdimension.fr/attempting-to-fix-an-olivetti-m24/