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Topic: Detecting "Touch" (Read 789 times) previous topic - next topic

cjdelphi

I can't think of a better word to describe what i'm on about that touch.

With a touch sensor, you can use the capacitance to determine if it's been touched or not, but what about human skin?  how would one go about
triggering a circuit from merely blowing on a sensor? I thought about using a microphone to detect the sound of someone blowing, touching is easy
but feeling the pressure on your skin from air flow...

Has anyone ever come across a sensor that actually detects low air pressure movement? would it even be possible?   or we in the realms of startrek here...

Magician

It could be as simple as hot wire. Other way is to install temperature sensor and hot resistor in close proximity

cjdelphi

interesting thoughts, thanks.... 

Docedison

There are also "Force Sensing Resistors" that change resistance when bent.

Bob
--> WA7EMS <--
"The solution of every problem is another problem." -Johann Wolfgang von Goethe
I do answer technical questions PM'd to me with whatever is in my clipboard

fungus

Here's a sculpture that responds to blowing...

http://vimeo.com/40904471


No, I don't answer questions sent in private messages (but I do accept thank-you notes...)

jtw11

There are a couple of apps for the iPad which mimic candles, when the iPad is blown on the candle flickers - using the microphone as you have suggested... and works very well!

fungus


Here's a sculpture that responds to blowing...

http://vimeo.com/40904471



That link doesn't seem to work for me, try this: http://technolojie.com/pu-gong-ying-tu-dandelion-painting/
No, I don't answer questions sent in private messages (but I do accept thank-you notes...)

draythomp

I sensed air movement (unintentionally) using a tmp35 to measure temperature. It was an annoyance because I didn't want it to be that sensitive, but it did a really nice job of sensing a casual breeze when I walked by it. 
Trying to keep my house under control http://www.desert-home.com/

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