App note: Moisture tolerant QTouch design

Posted on Sunday, March 24th, 2013 in app notes by DP


This application note describes the techniques to mitigate the issues caused
by moisture in QTouch designs. (PDF!)”

The basic conductive nature of water poses a great challenge to capacitive touch technology. This is aggravated by the
varying salinity of water and the presence of impurities. Water accumulation can occur in a variety of unpredictable
ways, thereby making it even more difficult to handle.
However, after careful study and experimentation, several innovative techniques have been developed to mitigate the
effects of moisture to a great extent. The design recommendations mentioned in this application note will enable the
QTouch design to behave more robustly in moisture conditions. Thus expanding the range of applications in which
Atmel QTouch Technology can be implemented.

This entry was posted on Sunday, March 24th, 2013 at 2:00 pm and is filed under app notes. You can follow any responses to this entry through the RSS 2.0 feed. You can skip to the end and leave a response. Pinging is currently not allowed.

One Response to “App note: Moisture tolerant QTouch design”

  1. anonymous says:

    As always a great read. You’ve been posting a lot of capacitive touch app notes. Are you planning a capacitive touch sensing board/application?

Leave a Reply

Notify me of followup comments via e-mail. You can also subscribe without commenting.

Recent Comments

  • Max: I have certainly noticed certain suppliers (like Adafruit, Pololu) being... "western-facing" - which is another way to say their prices definitely aren't Eastern Europe compatible,...
  • Shawn: Hello
  • jmarc78: Hello
  • JB: Hey.
  • Andrew: Me!!!