PIC Microcontroller Touch Keypad

by max on Friday, September 28th, 2007
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PIC Microcontroller Touch Keypad

Need a touch Keypad instead of the traditional 4×4 keypads? This might be the way to go.

The actual data from the touch sensors is quite erratic and requires some software processing. Basically you create a pulse for each of the ports and read the data with the instruction following the pulse signlal rise. Then read the ports the same way looking for a gap of 0.1 seconds with no data detected. This does the ‘debounce’. This results in fairly clean data capture from the sensors.

via The image “http://zedomax.com/img/aHR0cDovL3plZG9tYXguY29tL2ltYWdlL2ljb24vaGFja2VkZ2FkZ2V0cy5qcGc=” cannot be displayed, because it contains errors.

Categories: Circuits, Computer, Projects.

3 Responses to “PIC Microcontroller Touch Keypad”

  1. nok says:

    hello…

    i interests PIC Microcontroller Touch Keypad project.
    please send me sechematic and source code.
    large thancks

    [Reply]

  2. Xpider G says:

    Please sent me the info on this it would be perfect for a keypad ignition concept for my motorcycle.

    [Reply]

  3. Cristian says:

    Hello! I would appreciate if possible in my e-mail the scheme and some tips to run my project with touch screen tecnology. thanks

    [Reply]

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