A fun way to think about a national electrical grid is as a massively upscaled electrical circuit, one in which you have multiple power supplies injecting AC power, with various …read more (https://hackaday.com/2026/08/21/how-the-grids-harmonic-filters-keep-the-power-clean/)

Hacking A Cat Litter Box
https://hackaday.com/2026/08/21/hacking-a-cat-litter-box/

[Joseph DiGiovanni] is the owner of a Litter Robot 4. It’s a convenient mechanized litter box for cats that can clean itself to reduce unwelcome odors inside the home. He …read more (https://hackaday.com/2026/08/21/hacking-a-cat-litter-box/)

Sleeper E-bike has Solenoid Display
https://hackaday.com/2026/08/22/sleeper-e-bike-has-solenoid-display/

[GRMNT] decided to bring his grandpa’s beautiful road bike into the future by making a sleeper e-bike conversion. Going into the project, [GRMNT] didn’t really know what he was working …read more (https://hackaday.com/2026/08/22/sleeper-e-bike-has-solenoid-display/)

Building an Analog Geiger Counter
https://hackaday.com/2026/08/22/building-an-analog-geiger-counter/

These days, it’s plenty easy to build a Geiger counter with a microcontroller that has a nice fancy display and a simple digital readout for how many radiations you’re likely …read more (https://hackaday.com/2026/08/22/building-an-analog-geiger-counter/)

You Gotta Want It
https://hackaday.com/2026/08/22/you-gotta-want-it/

On Hackaday last week, and on the podcast, we were talking about one of the educational toys of yesteryear that launched a thousand careers, at least if the comment section …read more (https://hackaday.com/2026/08/22/you-gotta-want-it/)

555 Makes a Useful Beat Frequency Oscillator
https://hackaday.com/2026/08/22/555-makes-a-useful-beat-frequency-oscillator/

If you’ve got a cheap ham rig, it might not be very practical for you to receive certain transmissions out of the box. However, if you were to hack in …read more (https://hackaday.com/2026/08/22/555-makes-a-useful-beat-frequency-oscillator/)

The Shutter Makes This 3D Printed Camera Special
https://hackaday.com/2026/08/22/the-shutter-makes-this-3d-printed-camera-special/

Making a film camera is a project within the reach of almost anyone, from the experimenter with cardboard and sticky tape, to the machinist with an aluminium billet. But 3D …read more (https://hackaday.com/2026/08/22/the-shutter-makes-this-3d-printed-camera-special/)