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.

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3 Responses to PIC Microcontroller Touch Keypad

1. nok says:

   August 16, 2008 at 4:31 am

   hello…

   i interests PIC Microcontroller Touch Keypad project.
   please send me sechematic and source code.
   large thancks
2. Xpider G says:

   February 2, 2009 at 4:15 pm

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

   January 14, 2010 at 4:59 am

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