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More about earth quake (2)
PREMIUM
![Earth quake/shock detector. [130517-I]](https://cdn.xingosoftware.com/elektor/images/fetch/dpr_1,w_800,h_340,c_fit/https%3A%2F%2Fwww.elektormagazine.com%2Fassets%2Fupload%2Fimages%2F44%2F20160518111155_no-project-image.png)
| This simple circuit generates acoustic and visual alarms when it detects a shock, vibration or earthquake.
| This simple circuit generates acoustic and visual alarms when it detects a shock, vibration or earthquake.