how to recognize that the fist is open or not?

hamidkavianathar · Apr 8, 2016

hi guys
I want to find out that my fist is open or not. is it possible to do it with PIR sensor? if not, do you know another solution?
thank you.

KD494 · Apr 8, 2016

I'm sure you could figure out some way to make that work but I don't think it would be easy. If you're okay with having a sensor on your hand sometimes people will put flex sensors like this in a glove.

BradtheRad · Apr 8, 2016

There is a type of flexible conductive foam made to embed IC's in for safe storage. A Forrest Mims notebook suggests the stuff can be used as a pressure sensor.

hamidkavianathar · Apr 8, 2016

thanks for your attention. using a flex sensor is very good option but it's a little expensive.
is there any cheaper sensor?

KD494 · Apr 11, 2016

Not sure you'll find an off the shelf item much cheaper than that. However I did find this instructable that helps you make your own with conductive bags.

BradtheRad · Apr 11, 2016

Suppose you put a magnet on fingertips, and a reed switch in the palm? Closing the fist brings one close to the other.

You want a reed switch that isn't made from a glass bulb. It may require some searching.

how to recognize that the fist is open or not?

hamidkavianathar

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