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ArcaEge
capacitor-alarm-clock
C2026–2026
ArcaEge / capacitor-alarm-clock

capacitor-alarm-clock

capacitor blow up human wake up

Explore on GitHubRead Hacker News discussions
2Distinct people
2Mentions
0Explicit recommenders
162GitHub stars
REPOSITORY AT A GLANCE

What to know before exploring

What it is

capacitor blow up human wake up

GitHub

Where it is used

No documented product use has been verified yet.

What people are saying

No recommendation phrase was found in the indexed comments.

No classified warning is attached to this page. Read the discussions before treating silence as approval.

Also in these discussions

No other repository is repeatedly linked in the same discussions.

This week on Hacker News

Nov 7–Nov 14 UTC · Direct repository links and separately labeled related project stories. Indexed through 11/14/2026, 5:04:57 PM UTC.

No direct repository links were found in the indexed HN discussions over the past seven days. Older discussions are available below.

Mentions over time

HN mentions by 3-hour interval2 dated mentions

Observed mentions: 2026-06-14 11:19:56 UTC to 2026-06-17 11:28:18 UTC.

012026-06-14 09:00:00 UTC to 2026-06-14 12:00:00 UTC (exclusive): 1 mentions; 1 submissions, 0 commentsJun 14, 09:002026-06-14 12:00:00 UTC to 2026-06-14 15:00:00 UTC (exclusive): 0 mentions; 0 submissions, 0 comments2026-06-14 15:00:00 UTC to 2026-06-14 18:00:00 UTC (exclusive): 0 mentions; 0 submissions, 0 comments2026-06-14 18:00:00 UTC to 2026-06-14 21:00:00 UTC (exclusive): 0 mentions; 0 submissions, 0 comments2026-06-14 21:00:00 UTC to 2026-06-15 00:00:00 UTC (exclusive): 0 mentions; 0 submissions, 0 comments2026-06-15 00:00:00 UTC to 2026-06-15 03:00:00 UTC (exclusive): 0 mentions; 0 submissions, 0 comments2026-06-15 03:00:00 UTC to 2026-06-15 06:00:00 UTC (exclusive): 0 mentions; 0 submissions, 0 comments2026-06-15 06:00:00 UTC to 2026-06-15 09:00:00 UTC (exclusive): 0 mentions; 0 submissions, 0 comments2026-06-15 09:00:00 UTC to 2026-06-15 12:00:00 UTC (exclusive): 0 mentions; 0 submissions, 0 comments2026-06-15 12:00:00 UTC to 2026-06-15 15:00:00 UTC (exclusive): 0 mentions; 0 submissions, 0 comments2026-06-15 15:00:00 UTC to 2026-06-15 18:00:00 UTC (exclusive): 0 mentions; 0 submissions, 0 comments2026-06-15 18:00:00 UTC to 2026-06-15 21:00:00 UTC (exclusive): 0 mentions; 0 submissions, 0 comments2026-06-15 21:00:00 UTC to 2026-06-16 00:00:00 UTC (exclusive): 0 mentions; 0 submissions, 0 commentsJun 15, 21:002026-06-16 00:00:00 UTC to 2026-06-16 03:00:00 UTC (exclusive): 0 mentions; 0 submissions, 0 comments2026-06-16 03:00:00 UTC to 2026-06-16 06:00:00 UTC (exclusive): 0 mentions; 0 submissions, 0 comments2026-06-16 06:00:00 UTC to 2026-06-16 09:00:00 UTC (exclusive): 0 mentions; 0 submissions, 0 comments2026-06-16 09:00:00 UTC to 2026-06-16 12:00:00 UTC (exclusive): 0 mentions; 0 submissions, 0 comments2026-06-16 12:00:00 UTC to 2026-06-16 15:00:00 UTC (exclusive): 0 mentions; 0 submissions, 0 comments2026-06-16 15:00:00 UTC to 2026-06-16 18:00:00 UTC (exclusive): 0 mentions; 0 submissions, 0 comments2026-06-16 18:00:00 UTC to 2026-06-16 21:00:00 UTC (exclusive): 0 mentions; 0 submissions, 0 comments2026-06-16 21:00:00 UTC to 2026-06-17 00:00:00 UTC (exclusive): 0 mentions; 0 submissions, 0 comments2026-06-17 00:00:00 UTC to 2026-06-17 03:00:00 UTC (exclusive): 0 mentions; 0 submissions, 0 comments2026-06-17 03:00:00 UTC to 2026-06-17 06:00:00 UTC (exclusive): 0 mentions; 0 submissions, 0 comments2026-06-17 06:00:00 UTC to 2026-06-17 09:00:00 UTC (exclusive): 0 mentions; 0 submissions, 0 comments2026-06-17 09:00:00 UTC to 2026-06-17 12:00:00 UTC (exclusive): 1 mentions; 0 submissions, 1 commentsJun 17, 09:00

Counts come from the repository’s dated source evidence. Index cutoff: 2026-11-02 08:16:59 UTC.

View mention counts and date ranges
UTC ranges include their start and exclude their end. Select a period to filter the source evidence.
PeriodStart (UTC)End (exclusive, UTC)MentionsSubmissionsComments
Jun 14, 09:002026-06-14 09:00:00 UTC2026-06-14 12:00:00 UTC110
Jun 14, 12:002026-06-14 12:00:00 UTC2026-06-14 15:00:00 UTC000
Jun 14, 15:002026-06-14 15:00:00 UTC2026-06-14 18:00:00 UTC000
Jun 14, 18:002026-06-14 18:00:00 UTC2026-06-14 21:00:00 UTC000
Jun 14, 21:002026-06-14 21:00:00 UTC2026-06-15 00:00:00 UTC000
Jun 15, 00:002026-06-15 00:00:00 UTC2026-06-15 03:00:00 UTC000
Jun 15, 03:002026-06-15 03:00:00 UTC2026-06-15 06:00:00 UTC000
Jun 15, 06:002026-06-15 06:00:00 UTC2026-06-15 09:00:00 UTC000
Jun 15, 09:002026-06-15 09:00:00 UTC2026-06-15 12:00:00 UTC000
Jun 15, 12:002026-06-15 12:00:00 UTC2026-06-15 15:00:00 UTC000
Jun 15, 15:002026-06-15 15:00:00 UTC2026-06-15 18:00:00 UTC000
Jun 15, 18:002026-06-15 18:00:00 UTC2026-06-15 21:00:00 UTC000
Jun 15, 21:002026-06-15 21:00:00 UTC2026-06-16 00:00:00 UTC000
Jun 16, 00:002026-06-16 00:00:00 UTC2026-06-16 03:00:00 UTC000
Jun 16, 03:002026-06-16 03:00:00 UTC2026-06-16 06:00:00 UTC000
Jun 16, 06:002026-06-16 06:00:00 UTC2026-06-16 09:00:00 UTC000
Jun 16, 09:002026-06-16 09:00:00 UTC2026-06-16 12:00:00 UTC000
Jun 16, 12:002026-06-16 12:00:00 UTC2026-06-16 15:00:00 UTC000
Jun 16, 15:002026-06-16 15:00:00 UTC2026-06-16 18:00:00 UTC000
Jun 16, 18:002026-06-16 18:00:00 UTC2026-06-16 21:00:00 UTC000
Jun 16, 21:002026-06-16 21:00:00 UTC2026-06-17 00:00:00 UTC000
Jun 17, 00:002026-06-17 00:00:00 UTC2026-06-17 03:00:00 UTC000
Jun 17, 03:002026-06-17 03:00:00 UTC2026-06-17 06:00:00 UTC000
Jun 17, 06:002026-06-17 06:00:00 UTC2026-06-17 09:00:00 UTC000
Jun 17, 09:002026-06-17 09:00:00 UTC2026-06-17 12:00:00 UTC101

What Hacker News says

2 sources
arcaege·Jun 14, 2026Submission

Show HN: Capacitor Alarm Clock

I 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 to 3.3v for the esp32, I was lazy and didn't use a buck converter circuit :)
153 points · Open discussion

MAKE YOURSELF AT HOME

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