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Cool Physics with a Smart Phone
Aquarium Robo Brush
Scratch Hologram Detailed Instructions for Teachers
35mm Slide Converter For Cellphone
This Seismometer is no toy!
Advanced Scratch Hologram Techniques
Glad I stumbled across it
Was looking for a good slide-to0digital converter when I came across this great tutorial last night. I didn't have much at home to work with, so improvised with a soft drink carton, some chopsticks and tape. I hand held my Samsung cell camera and converted 50 slides last night in an hour or so. Thanks for the idea and inspiration!
Nice job. That is the beauty of Instructables. Gives crative people new ideas.
Thanks I did see his tracing. Not sure what it is. Not an earthquake. I would like to see a complete recording of an earthquake to convince me that his setup is a sensitive as he claims.
In case you didnt, realize, he commented back 6 months ago but to the parent comment, not your request. Check the comments to the parent comment to see the seismogram
Aquarium Scraper for Stubborn Algae
https://hackaday.io/project/7231/gallery#98ed11058... is another seismometer project with clear build instructions. It is much more sensitive than Lehman seismometers and it is a 3D velocity vector device based on piezoelectric sensors, a charge amplifier and Arduino processsors (Mega initially, now YUN for webserver ability). It's output is magnitude, direction and statistical analysis of the magnitude and location of seismic noise. Click on the picture below.
Sure! There was a microseismic event near Knoxville in the early morning hours of Jan 30. The first picture is the USGS seismometer reading (about 7 miles from my device) and the second picture is the device output. The green line is the vector magnitude of the seismic noise and the blue line is the noise statistics. The third graph is a polar plot of vector magnitude on compass direction, where 0 = North.
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