In order to drive high power outputs with arduino such as high power dc motor high power led we need a mosfet to do the job so lets get started.
BUY PARTS :
BUY ARDUINO UNO:
https://www.utsource.net/itm/p/7199843.html
BUY IRLZ44N:
https://www.utsource.net/itm/p/628014.html
BUY TIP120:
https://www.utsource.net/itm/p/384328.html
BUY 12V ADAPTER: https://www.utsource.net/itm/p/8013134.html
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so to drive high power outputs we need some components as gien below
Arduino uno- https://www.banggood.com/Wholesale-Arduino-Compat...
https://www.amazon.in/gp/product/B015C7SC5U/ref=as...
Mosfet-
IRFZ44N - https://www.banggood.com/10Pcs-IRFZ44N-Transistor...
https://www.amazon.in/gp/product/B07545FVK6/ref=as...
IRLZ44N - https://www.amazon.in/gp/product/B077JQYBK9/ref=a...
IRF530N- https://www.amazon.in/gp/product/B077JRCHVL/ref=a...
Breadboard
Jumper
12v power Supply
Dc motor / high power led as output
You can use any of the Mosfet's but when it comes to choose one of them try to use IRLZ44N because it is a logic level MOSFET so it will respond for low voltages too that means current will conduct even on 2.5v or 3..3v or 5v but in IRFZ44N & IRF530N they will provide enough current for the operation at such voltages and driving high current such as 8 or 10A by gate voltage 5v they heat too much so avoid them but if you want to use IRF530N or IRFZ44N then go for IRF530N
So finally i hope you learned a little bit from this instructables and you know how to use MOSFET with arduino.Refer video to avoid any sort of confusion and demonstration of Mosfet with arduino and connections.