Here is a radar display for use with an Arduino, servo motor and a HC-SR04. Its not yet perfect as the window resize is not working properly, except maximise window. Libraries required are at the top of the code. Sorry about the GIF, I am still trying to get to grips with ShareX.
The Arduino...
SubName: Reading PIR sensor on digital pin 5 to rotate a servo on digital pin 4.
Description: Basically this example is emulating opening and closing powered doors like in a shopping centre (shopping mall), superstore etc.
You can use this simple code to monitor PIR sensors HC-SR501 or HC-SR505...
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