TouchRead available?

#1

Hi everybody!
Is there a touchRead function such as the one that exists in Teensy? I tried to analyzed/compare the schematics both of Axoloti and Teensy but couldn't get to any conclusions. I have seen some posts about MPR121 so I am also confused if I need a separate sensor to measure capacitance or if Axoloti is capable of doing that measurement by itself.
Any help would be appreciated.

Thanks,
Filipe

#2

There is no capacitive sensing peripheral available inside the STM32F4 microcontroller.
Capacitive sensing can also be implemented without specific peripherals, using only general purpose input and outputs, but this requires strict code timing. But that requirement conflicts with the real time audio constraints.
MPR121 is a better solution.

#3

Allright, thanks very much for your help.
I am having a great time with Axoloti!

F

#4

i did see these

https://www.adafruit.com/product/1982

and

https://www.adafruit.com/products/1602
i have one of these but it is still in its packaging.
i got given it, but don't have a project that currently needs it. looks like it might be fun tho.