This is a demonstration project, how I work on prototyping like this small and handy Arduino schield. It has a Nokia PCD8544 display, a rotary switch and a socket for the popular RF24L01+ RF module.
I need to clean up the Rotary code, you might want to check later videos for Rotary and oscilloscope explanation.
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https://www.youtube.com/watch?v=pl8wAQRUfQQ