For ease of programming, our readers may follow the guide by Eva Herrada at Adafruit whose PDF file is attached below.

The full article can be read here: https://learn.adafruit.com/rp2040-arduino-with-the-earlephilhower-core/installing-the-earlephilhower-core

If the guide does not load above, you may access it directly at: cdn-learn.adafruit.com