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Touch panel maximum size

Posted: Fri Jul 30, 2021 6:34 pm
by Bashar
I am currently designing a light switch (86x86mm) that has 3 touch electrodes distributed each about a third of the switch in size, but have come across the Esp32 Hardware Design Guidelines ( https://www.espressif.com/sites/defaul ... nes_en.pdf) that states in page 25 that touch electrode diameter should be in the range of 8mm to 15mm.

So is it not possible to have a touch electrode of a larger size? What problems might be encountered?

Thank you