I see you asked about this a couple of years ago, and were told about fastTouch then. So I wrote a little benchmark to see how fast it really was. I have a box with 12 fastTouch pins and a T4.
Here's the code:#include <FastTouch.h>
void setup()...
If you (or other people) have not yet reformatted your SD card, please DO NOT reformat it now. All SD cards come properly formatted. Many people have wasted a lot of their time with reformatting, when the real problem was not card formatting at...