This lazy-guide is a HOWTO about how I made my modified, ANT+ capable Adafruit Feather nRF52840 Express being integrated into the Arduino desktop IDE.
This page has been republished to my WordPress blog for analytics purposes. Read it there: https://blogarak.wordpress.com/2020/03/29/arduino-ide-integration-for-the-nrf52840-feather-express-with-s340/