8 Replies Latest reply on May 31, 2015 11:04 AM by user_14586677

    Copper PAD as Cap Sensor

    user_418894472

       Hello!

         

      I need to install three input switches corresponding to which there are three LEDs that show the status of the switches.

         

      I was certain to use macanical switches. But just got to know a bit more about the CAP SENSE capability of PSoc chips.

         

      So m thinking to give a try to the CAPSENSE version.

         

       

         

      Simplified scenario...

         

      There's a PCB containing three LEDs

         

      Above the LED is 1mm thick diffusing epoxy

         

      Above the epoxy is 1mm transparent glass. The user will touch this glass.

         

      I want to make the capsense pads just below the LED. Size of pad is approx 4mmx2mm

         

      A 3D photo is attached for better understanding.

         

       

         

      Am I thinking in the correct direction or am I incorrect in the approch?

         

      I have zero experience with cap sense.

         

      Please help/guide...

         

      Thanks!