2xAAA Powered Arduino




Introduction: 2xAAA Powered Arduino

In this instructable I will teach you how you can run your arduino uno r3 (others will most likely work but are untested by me) using only 2 AAA batteries.

I got everything from Jaycar but I am sure you can source these in countries outside of Australia.

Step 1: Required Item

For this you will need:
1 x Arduino Uno R3
1 x 2 AAA battery holder
1 x Freetronics USB Booster
Soldering Iron
A Sharp Blade
A USB Cord To Connect Arduino To USB

Step 2: Setup the Boost Board

To use the Freetronics USB Booster with 2xAAA batteries you must cut the track on the 3.75v and join the 1.17v jumper with some solder.

Step 3: Connect the Batteries

Solder the batteries to the input holes in the board and fit the batteries.

Step 4: Connect Arduino

Now, using the USB cord, connect the Arduino Uno R3 and the USB Boost Converter together and you are done.
Make sure the blue PWR LED is on and the red LOW BATT light is off.

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    8 years ago

    Hello, I am not very knowledgeable with the arduino. But looks awesome how you powered it with the aaa batteries. Does the Arduino connect things to your phone can it be controlled by an app and send notifications to your phone?


    Reply 8 years ago

    You can control an arduino from your phone but you would use a shield. Etherent, Bluetooth or wifi