STM32 Touch Sensors

From Stm32World Wiki
Revision as of 03:42, 28 May 2021 by Lth (talk | contribs)
Jump to navigation Jump to search

Only some STM32 processors have touch sensor circuitry built in, most noticeable the STM32Lxx series.

STM32 Processors with Touch Sensors.png

Hardware Example

As part of another project I was using an STM32L432 MCU and while doing that design I decided to add 3 touch sensors.

Schematic with touch sensors.png

The circuitry involved in the touch sensing is the C5 and the actual touch pads J2, J3 and J4 and their accompanying resistors.

Resources