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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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MajorPeabody over 12 years ago

What kind of a card? What kind of a pad?
If the card is colored, you could detect that (lighter or darker).
There are some good pressure sensors out there. You could break the problem into two parts, (1) is card touching pad and (2) which side (face?)
Give us a bit more information...

MajorPeabody
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mutazoid over 12 years ago in reply to MajorPeabody

The card can be coloured. It can have grooves.
If something has to be embeded it has to be small cause the surface area is small.

The sensor pad would be perfect if it can be flat and the size of a mouse pad.
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MajorPeabody over 12 years ago in reply to mutazoid

So you have a mousepad and you want to tell if a playing card is face up or face down?

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MajorPeabody over 12 years ago in reply to mutazoid

So you have a mousepad and you want to tell if a playing card is face up or face down?

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mutazoid over 12 years ago in reply to MajorPeabody

but not a playing card.... I have several small cards. I need to know which card and which side is touching the area.
I want them place one at a time on the area and a sensor reads the card telling me what card and what side is touching it.

Thanks for any ideas
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