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In some circuits like half bridges and BUCK converters the source of the MOSFET is floating, so not connected to the same ground.
I will show 3 circuits built with general components that enable you to effectively drive a floating N-type MOSFET from your Arduino.
I will explain how they work, the pro’s cons, simulate all circuits and also build and test the last 2.
Arduino code for 31kHz 50% duty cycle signal:
drive.google.com/file/d/1-Nmc...
Simetrix simulation files and IR2104 model:
drive.google.com/file/d/1_vD1...