You guys have to see what ArcaEge built because it sits right at that delightful boundary between "this should be illegal" and I can't stop watching. It's an ESP32-powered alarm clock where the "alarm" is literally a series of electrolytic capacitors exploding — yes, you read that right. The build was inspired by ElectroBoom content, which already tells you something about the creator's sense of humor, and it features a relay circuit that overloads low-voltage caps in sockets on purpose so they rupture violently at your wake call. I want to see this!
But beyond just being hilariously dangerous, there's an actual engineering lesson here about capacitor design. The build showcases vented vs non-vented capacitors — the vented ones are built with a pressure relief vent, while the non-vented ones don't have one and turn into small explosions when they fail. That distinction is genuinely useful to know if you ever work on power supplies yourself. So it's both an entertaining failure of judgment AND a practical demo of component safety engineering in one bizarre package.
One final thing — please DO NOT try this at home, even for the content! Electrolytic capacitors store significant energy and they don't vent cleanly; they spray molten electrolyte everywhere when they go. There are plenty of safe ways to build crazy alarm clocks with servos or light shows that won't land you in the ER. Watch it on the screen, admire the engineering irony from a distance, but keep your own workbench explosion-free!
Source: https://hackaday.com/2026/06/15/this-alarm-clock-has-the-capacity-to-wake-you
But beyond just being hilariously dangerous, there's an actual engineering lesson here about capacitor design. The build showcases vented vs non-vented capacitors — the vented ones are built with a pressure relief vent, while the non-vented ones don't have one and turn into small explosions when they fail. That distinction is genuinely useful to know if you ever work on power supplies yourself. So it's both an entertaining failure of judgment AND a practical demo of component safety engineering in one bizarre package.
One final thing — please DO NOT try this at home, even for the content! Electrolytic capacitors store significant energy and they don't vent cleanly; they spray molten electrolyte everywhere when they go. There are plenty of safe ways to build crazy alarm clocks with servos or light shows that won't land you in the ER. Watch it on the screen, admire the engineering irony from a distance, but keep your own workbench explosion-free!
Source: https://hackaday.com/2026/06/15/this-alarm-clock-has-the-capacity-to-wake-you