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Forum Index : Microcontroller and PC projects : Seismograph?
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| Phil23 Guru  Joined: 27/03/2016 Location: AustraliaPosts: 1667 |
To Grog & the other K1W1's, Just fished out Feb 2013's SC magazine to have a look at the Seismograph they published back then. Curious about how it could be implemented with a Micromite. The hardware is simple, just a case of whether there's a better alternative for the sensing side of things. Would be something I'd like to have, if I lived over there, considering the last few weeks. Phil. |
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Grogster Admin Group  Joined: 31/12/2012 Location: New ZealandPosts: 9589 |
I'll have that issue somewhere - I will have a dig and a read. Yeah, pretty nasty damage near the epicentre - not good.  Smoke makes things work. When the smoke gets out, it stops! |
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| Phil23 Guru Joined: 27/03/2016 Location: AustraliaPosts: 1667 |
Yes, The mechanical bits look easy. Just wonder what sensor alternatives there might be. Accelerometer module on the moving arm? Not sure how sensitive that would be. 3-axes-Analog-Output-Accelerometer-Module Or maybe an magnet at the end and a Hall effect sensor. Hall-effect-magnetic-sensor-module Be nice if the circuitry was the easiest bit just leaving the mechanics of the thing & the code. Phil. |
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| Grogster Admin Group Joined: 31/12/2012 Location: New ZealandPosts: 9589 |
No earthquakes in Australia much though, is there?  Smoke makes things work. When the smoke gets out, it stops! |
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| Phil23 Guru Joined: 27/03/2016 Location: AustraliaPosts: 1667 |
Actually 1 or 2 minor tremors in my local are in the past 15-20 years. The August 2015 one is one that we felt here. But, yeah we have history of a few. Australia's Earthquakes. Certainly think the right thing hiding away would help you guys. Phil. |
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bigmik Guru Joined: 20/06/2011 Location: AustraliaPosts: 2949 |
Only when I fall out of bed..    Mick's uMite Stuff can be found >>> HERE (Kindly hosted by Dontronics) <<< |
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| Phil23 Guru Joined: 27/03/2016 Location: AustraliaPosts: 1667 |
Food for thought regarding an easily built sensor...   Pretty self explanatory. Phil. |
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| Phil23 Guru Joined: 27/03/2016 Location: AustraliaPosts: 1667 |
Still got this idea ticking away in the back of my mind. Any thoughts on adding a sensor to this?  $116AUD. Here and here. |
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| plasma Guru Joined: 08/04/2012 Location: GermanyPosts: 437 |
use a phone , read the gyro , send it to a database if the gyro changing the data , so you can create a really big network . |
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TassyJim Guru Joined: 07/08/2011 Location: AustraliaPosts: 6269 |
The circuit in the original SC article is simple enough. Just replace the PICAXE with a 'mite of choice and a display. The signals of interest are low frequency so the mite's analogue inputs will be plenty fast enough. The 3 axis accelerometer should also work but I am not sure about their low frequency abilities. It would be interesting to compare the sensitivity of the two methods. It is something I nearly built when the article came out and next time the earth moves, I will wish I had. Jim VK7JH MMedit |
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| TassyJim Guru Joined: 07/08/2011 Location: AustraliaPosts: 6269 |
I should have added that it is the movement of the earth we are looking at, not the pendulum so the 3 axis accelerometer is simply glued to a convenient lump of concrete. That makes the hardware side of things easy! Jim VK7JH MMedit |
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