Hardware info and useful pointers.
Technical Reference and pointers to useful tutorials.
We are using a new core for our Arduino Nano RP2040 Connect, the "Earle Philhower III arduino-pico core" Instructions on how to install it are at: https://learn.adafruit.com/rp2040-arduino-with-the-earlephilhower-core/installing-the-earlephilhower-core This software allows us to use the 2nd core of the RP2040, which we use to handle sending data back to your laptop, which enables us to maintain a 1ms control interval. The software is at https://github.com/earlephilhower/arduino-pico but you don't have to look at that unless you are interested. If you are interested, see https://arduino-pico.readthedocs.io/en/latest/ for usage information. You don't need this information, however. Google "Earle Philhower" for more information, and some old and new photos.