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Sensor question...

mutazoid over 12 years ago

What are the ways I can detect which side of a card is touching a pad?

I was thinking, is it possible to putting one piece of metal on one side and two on the other...

Is this doable?

Thanks

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Former Member over 12 years ago

You could perhaps have this 'pad' as a kind of illuminated box, with a transparent acryllic top, and RGB sensors where you want to place the cards. Then when you place the cards down, the sensors can tell which way round the card is placed. As for telling when the card is placed, it's simple - all you need to look for is a sudden change in colour readings of the sensor, perhaps only telling you when it reads a colour that it expects (i.e. a bright blue face of the card, as opposed to someone's hand accidentally touching the pad).
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mutazoid over 12 years ago in reply to Former Member

hey Rahul Swaminathan what kind of sensor would you be talking about?
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Former Member over 12 years ago in reply to mutazoid

Maybe something like this:
https://www.sparkfun.com/products/11195

It's a little expensive though...

There's another one from SparkFun, and it's cheap, but its REALLY tiny, so probably not the best option!
https://www.sparkfun.com/products/106562
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Former Member over 12 years ago in reply to mutazoid

Maybe something like this:
https://www.sparkfun.com/products/11195

It's a little expensive though...

There's another one from SparkFun, and it's cheap, but its REALLY tiny, so probably not the best option!
https://www.sparkfun.com/products/106562
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