Arduino: Protection System

Watch the video above to see how to build the circuit, and a see a demonstration of what the circuit does.

Buttons, and switches will use a 10K resistor, while LEDs require a 330K resistor.



Arduino Mega (1)

LCD Shield (1)

Jumpers (16)

Red LED (2)


Breadboard (1)

Push Button (3)

10K Resistor (3)

330K Resistor (3)

USB Cable (1)

USB to Wall Outlet Adapter (1)

If you need help, or don't understand something, email me at:

Also, don't forget to check out my website, here you can watch my other videos, and download the Arduino code for this, and many other Arduino projects:


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    4 Discussions

    Because, I wanted to use buttons, and LEDs on a breadboard.

    The Uno was too small, all of the pins were taken up by the shield.


    4 years ago on Introduction

    Thanks for sharing! Congratulations on your first Instructable! I hope we see more from you in the future!

    1 reply