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Kova
Joined: 06 May 2007 Posts: 35
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Capacitive Touch Slider |
Posted: Sat May 01, 2010 2:35 pm |
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Hi all,
I want to build my first capacitive touch pic-project .
I read a lot of pdfs downloaded from Microchip (in particular AN1250), I want to handle the capacitive touch slider.
At the page 13 of AN1250 microchip sheet, there are 4 equations.
In CCS there are the "touch functions", but I want to know how I can obtain in CCS the values "Captured Left Base Capacitance" and "Captured Right Base Capacitance" that appears in the Microchip sheet.
And Current left and right values are 0 for the first iteration and "left and right position values" for the 2 to n iteration?
Some advice for the circuit/printed scheme?
Sorry for my english :-)
Bye |
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Kova
Joined: 06 May 2007 Posts: 35
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Re: Capacitive Touch Slider |
Posted: Sat May 15, 2010 12:48 am |
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Nobody? ![Crying or Very sad](images/smiles/icon_cry.gif) |
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mskala
Joined: 06 Mar 2007 Posts: 100 Location: Massachusetts, USA
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Posted: Sat May 15, 2010 7:33 am |
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I have not used this, but reading over, it looks like all they mean by
Captured Left Base Capacitance is the A/D reading. Do the A/D
conversions and save them for the equations. |
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