Electronics > Beginners
Are there non-contact vibration sensors for Arduino or PC?
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Brumby:

--- Quote from: engineheat on September 09, 2019, 04:47:31 am ---A max data sampling freq of 3200 is not enough to sense vibration 5khz or above right? I assume an object that creates a 5khz sound is also vibrating at 5khz.

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Using Nyquist, a 3.2kHz sampling rate will be able to handle frequencies up to 1.6kHz - but that does not mean a 3.2kHz sampling rate won't pick up something from a 5kHz vibration.  You won't be able to reproduce the 5kHz waveform, but you might get something you could use.

At this point, however, I will defer to those who can speak with more authority on such a subject.
ddavidebor:

--- Quote from: engineheat on September 09, 2019, 04:50:56 am ---
--- Quote from: kosine on September 08, 2019, 12:32:01 pm ---Would a linear hall effect sensor work?

SS49E datasheet says response time of 3us, so sampling rate would be adequate.

https://sensing.honeywell.com/honeywell-sensing-ss39et-ss49e-ss59et-product-sheet-005850-3-en.pdf

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I'm not familiar with hall effect sensors. How would it work for my project?
thanks

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You put a magnet somewhere, a hall sensors somewhere else in close proximity. Magnetic field varies and so does the hall sensor output that measures magnetic fields.

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