P-Channel MOSFET as a Switch. Turn ON a 12V Motor with Arduino. (Step-By-Step Guide)

This is a tutorial about using a P-Channel Enchantment Type MOSFET as a switch to turn ON and OFF a 12V Motor.
UPDATE:
You should also add a 100-ohm resistor between the Arduino pin and the Gate terminal of the MOSFET. The MOSFET has a small capacitance that starts to charge/discharge when you switch the Arduino pin. This creates a short current spike that can be bad for the Arduino pin. Especially if you plan to do high-frequency switching.

Diagrams and code:
https://circuitjournal.com/how-to-use-a-p-channel-mosfet-with-an-arduino
I am using an IRF9540N, but you can use some other logic level P-Channel Enchantment Type MOSFET.

Buy from AliExpress.com:
IRF9540N: https://s.click.aliexpress.com/e/_d8JPiEs

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Видео P-Channel MOSFET as a Switch. Turn ON a 12V Motor with Arduino. (Step-By-Step Guide) канала Indrek