Actions
Forum Thread Details
  • Replies 5 replies
  • Subscribers 177 subscribers
  • Views 387 views
  • Users 0 members are here
Related

Capacitance sensing pads

autodeskguest

I'm trying to make some symbols to use as capacitive sensing buttons for use

with a Cypress PSoC Capsense chip. The Cypress application note (AN2292)

says to fill ground around the pads. I can't figure out how to create a

buffer area to keep the polygon from filling right over the pads. Any ideas?

 

 

 

Parents

  • LGR wrote:

    I'm trying to make some symbols to use as capacitive sensing buttons for use

    with a Cypress PSoC Capsense chip. The Cypress application note (AN2292)

    says to fill ground around the pads. I can't figure out how to create a

    buffer area to keep the polygon from filling right over the pads. Any ideas?

     

     

    If the pads are made using SMD pads or through-hole pads, any polygon

    drawn around them but named differently from the signals on the pads

    will automatically have an isolation space around the pads.

    If you draw the touch pads using polygons, you will just have to be

    careful how you draw the ground polygon outline so an isolation space is

    left.

    John G.

     

Reply

  • LGR wrote:

    I'm trying to make some symbols to use as capacitive sensing buttons for use

    with a Cypress PSoC Capsense chip. The Cypress application note (AN2292)

    says to fill ground around the pads. I can't figure out how to create a

    buffer area to keep the polygon from filling right over the pads. Any ideas?

     

     

    If the pads are made using SMD pads or through-hole pads, any polygon

    drawn around them but named differently from the signals on the pads

    will automatically have an isolation space around the pads.

    If you draw the touch pads using polygons, you will just have to be

    careful how you draw the ground polygon outline so an isolation space is

    left.

    John G.

     

Children
No Data