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Halloween ghost hunting EMF detector
Build a ghost hunting EMF detector in about 30 minutes — This spooky halloween ghost detector looks for EMF signal spikes and drops, just like the tools used by pro ghost hunters
last checked Jul 13, 2026 · Unknown
CohortClass of 2017What it is
Build a ghost hunting EMF detector in about 30 minutes — This spooky halloween ghost detector looks for EMF signal spikes and drops, just like the tools used by pro ghost hunters. It's easy to build, and if you have a HIDIOT should take you about 30 minutes from start to finish. It's a great project for kids and adults, both living and dead... [Tech]
HTTP liveness
12 probes since Jun 12Jun 12Jul 13
AliveHard-dead (404/5xx/parked)RedirectedUnverified (timeout/DNS/block)
Observed events
probes · press · GitHub- Jun 12, 2026First probe — unverifiedUnknown
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Pulse Indexobserved activity
12 probes0 pressGitHub –Tranco –
Not enough observed signals for a Pulse Index (needs 2+ signal families).
Cohort survival · Class of 2017weekly
13,497 products launched in 2017 · 100% still active
13,462 active35 sunset
Still active
100%
Median lifespan
4.9y