Earthquake sensing clocks - IdeaMill

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HADRIAN ION on February 5, 2021 at 8:11 pm
Idea: Earthquake sensing clocks
Link: https://youtu.be/Bdi-P-lFaAc...

Not sure why a clock when you can just make one and stick it on your wall or shelf.

How to Make an Earthquake Alarm at Home - Earthquake Detector
Link: https://youtu.be/Bdi-P-lFaAc
Cleo Flatular on February 5, 2021 at 6:59 pm
Idea: Earthquake sensing clocks
Link: https://www.amazon.co.uk/Earthquake-Detect...

I had one like this but it just goes off when trucks go past in the street below.

Earthquake Detector Alert Alarm PGS047
Link: https://www.amazon.co.uk/Earthqu

Earthquake Detector Alert Alarm PGS047: Amazon.co.uk: Electronics