Thank you for your reply! I will do that.

I am attempting to upload the basic MotionSensor script to an Arduino UNO WIFI Rev2 and continue to get the error below:

Arduino: 1.8.9 (Mac OS X), Board: "Arduino Uno WiFi Rev2, ATMEGA328"

Build options changed, rebuilding all
In file included from /Arduino/SlideCount/SlideCount/SlideCount.ino:39:0:
MySensors.h:83:2: error: #error Hardware abstraction not defined (unsupported platform)
#error Hardware abstraction not defined (unsupported platform)
^~~~~
exit status 1
#error Hardware abstraction not defined (unsupported platform)

This report would have more information with
"Show verbose output during compilation"
option enabled in File -> Preferences.

Do I need to look into another board, or is there a way to update the hardware list to include this board.

Thanks in advance to anyone who can help!