MetaClock
An alarm clock that wakes you up with your any YouTube video
MetaClock launched on December 19, 2022 with 66 votes, #894 of 3,688 launches that month and more than 50% of that year's launches.
What it does
MetaClock is an Online Alarm Clock that can play YouTube videos and uploaded MP3s as an alarm tune. It supports Chromecast which means you can turn your TV or stereo system into an alarm clock. No installation is needed, it can also work offline.
Does a similar job
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Capacitor Alarm ClockJun 2026 · github.com · ▲153I made an alarm clock that blows up capacitors to wake you up. There are more details on the Github repo but it's made from an esp32-c3 as the microcontroller, with 3 capacitor slots. There are relays on each capacitor slot to put 15v reverse voltage on the capacitor, with 5.1 ohm resistors on each slot for current limiting in case the capacitor shorts out. I also chucked in an SSD1315 OLED to show the time and a menu to configure it, although there's a web UI as well. The esp32 also means you can fetch the time from NTP. It also functions as a small heater since I used LDOs to step down 15v…
I made an alarm clock2021 · stavros.io · ▲271
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