Vibration Sensor Switch

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dlcross741
 
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Joined: Fri Jun 09, 2017 8:03 am

Vibration Sensor Switch

Post by dlcross741 »

Greetings.

I'm looking to trigger an event when someone steps on a stair tread. I looked at breakbeams, but the step is over 1m across so the range won't work for them. I'm leaning towards the Vibration Sensor Switches but wondered which of the three sensitivities would be most appropriate. Has anyone had any experience and would be able to make a suggestion?

I'm also open to other suggestions. I looked at the Force-Sensative Resistor, but that seems WAY too sensitive.

Thanks.

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adafruit_support_bill
 
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Re: Vibration Sensor Switch

Post by adafruit_support_bill »

The vibration sensors need substantial movement to trigger and would not work unless your stairs are pretty rickety.
An accelerometer might work. You could try one of the more sensitive (+/- 2G) types.
You could make an extended range break-beam type sensor using a laser diode module and a phototransistor:
https://www.adafruit.com/product/1054
https://www.adafruit.com/product/2831
Or an ultrasonic rangefinder like this one: https://www.adafruit.com/product/982

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