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Hardware Support

UNO
Nano
MKR
GIGA R1
Nicla
Portenta

General troubleshooting

Board not detected?

Read more about:

If your board does not appear on a port Fix port access on Linux

Reset your board

Learn about the different ways you can reset an Arduino board:

Read the article

If your board is unresponsive

Learn what to do if your board appears to be running a sketch, but is not behaving as expected.

Read the article

If PWR LED does not turn on

Learn more about the PWR Led behaviour on different boards.

Read the article

Resources

Power your board

Learn more about the different ways to power your Arduino board.

Read the article

Connect your board

Learn how to:

Add a board Select a board/port Uninstall board

About the AREF pin

The AREF (Analog Reference) pin can be used to provide an external reference voltage for the analog-to-digital conversion of inputs to the analog pins.

Learn more about the AREF pin

Keeping your board clean

General advice on how to keep your Arduino board clean.

Read the article

Multimeter basics

Learn about different multimeter features, how they function, and how to use this essential tool.

Visit the article in Arduino Docs

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