Very simple touch switch?
Just wondering if anyone can offer their opinions about whether or not this could work with the BS2.
It's a very simple touch switch based on capacitivity.
Schematic and info here:
http://www.bytecraft.com/touchsw.html
When I saw this I wondered if that's what the small 6 pin qprox chip was, just a pic programmed to read small changes in capacitance?
Anyway, I was wondering the same thing could be utilized with the BS2. Where you can just read the change in capacitance caused by touch directly from an I/O pin.
Tony
Post Edited (TonyA) : 3/22/2006 3:14:02 PM GMT
It's a very simple touch switch based on capacitivity.
Schematic and info here:
http://www.bytecraft.com/touchsw.html
When I saw this I wondered if that's what the small 6 pin qprox chip was, just a pic programmed to read small changes in capacitance?
Anyway, I was wondering the same thing could be utilized with the BS2. Where you can just read the change in capacitance caused by touch directly from an I/O pin.
Tony
Post Edited (TonyA) : 3/22/2006 3:14:02 PM GMT
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Bean.
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Chris Savage
Parallax Tech Support
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From an electrical point of view, and just as a general matter, almost anything you can do with or to a PIC microcontroller safely, can also be done with or to a PBASIC Stamp microcontroller equally safely. There are some exceptions, as not all Stamps are PIC based, and those that are not, are based on the Ubicom SX processors. It would be wholly unfair in this regard to make any exact comparison between a PIC based microcontroller, and a Ubicom based microcontroller. However, electrically, they are quite similar, and similar precautions and latitudes apply to both.
Obviously, the bottom line for any electrical or electronic device is the manufacturer's or provider's data sheet or specification sheet. If you follow those guidelines, you really can't go wrong. POOF <oops>
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Bruce Bates
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I thought maybe this would be a good way to utilize touch sensing without the need for an extra chip.
Thanks,
Tony
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Chris Savage
Parallax Tech Support
csavage@parallax.com