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HP T1500 G3 UPS monitoring software 2026-06-28 | [misc] Another old UPS from the eWaste bin, but this is a nice one! It is pure sine wave output, and can do 950 Watts, from a 36V Lead acid cell. I already use one of these on my bicycle generator, and then I found a second one. But I already had my main server on a different eWasted UPS, which, while a cheap model, did work with the CyberPower…
Slurm at Home 2026-04-19 | [misc] [music] As a child who spent way too much time listening to sped up cassette tapes, it is always interesting how very simple effects can change how music sounds. Apparently, I'm not the only one, because on the internet, these sorts of things can crystalize into entire "genres": * pitching songs up and down * "slowed + reverb" * Nightcore - the aforementioned…
The Fish Game and other QBASIC oddities 2026-02-08 I don't think I've even looked at most of this stuff in 10-15 years, but since we live in the future now, you can run it in a browser, using js-dos. Check the rendering options in the settings of the applet below, there is a smooth option if the default pixelated setting is annoying. IFRAME: vm.html How did you first learn to program? Everyone…
Christmas self-playing Bells 2026-01-31 | [misc] [music] It may be more than a month past Christmas, but this is something that's been in my "get to it whenever" box for a while. These are "Caroling Christmas Bells" made by "Capricorn Electronics". It consists of a plastic control box and twelve inexpensive tuned bells. Inside each one is a small coil (which looks suspiciously like it was taken…
Robot Arm: Introduction 2026-01-15 | [robot-arm] Until I write a proper writeup for this project, here is the summary I posted to the Teensy Forum: https://forum.pjrc.com/index.php?threads/teensy-4-1-as-a-robot-arm-cont roller.77603/#post-364701 Hello all, After the startling Adafruit/Sparkfun showdown this week, I figure it's as good of a time as any to share my robot arm project on here that…
soviet.c 2025-11-15 | [software] It's that falling block game that we all know and love. I did this before, but I wanted to clean it up to make porting easier for the occasional quick demo. If you have something that can run C code and display a grid of squares, you should be able to run this on it now with little difficulty. A demo program using SDL2 is included to show how it's done. It is…
“Atomic” Clock 2025-07-26 | [radiclock] previous: Atomic Clock Experiments in non-oscillatory timekeeping It’s an “atomic” clock! The radioactive kind. Trying to tell the time with a rock and a Geiger counter. the clock Clocks that tick were invented about 700 years ago with the invention of the verge escapement and it was an immediate improvement. Before then, the best we could do was look at…