Using the Arduino Pro Mini 3.3V

Contributors: jimblom
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Resources and Going Further

Arduino Pro Mini Prototyping

If you are looking at making a permanent connection, try soldering the Arduino Pro Mini on the following prototyping boards or stacking a shield to the boards.

SparkFun Solder-able Breadboard - Mini

SparkFun Solder-able Breadboard - Mini

SparkFun Snappable Protoboard

SparkFun Snappable Protoboard


ProtoShield for Arduino Pro Mini


SparkFun Mini GPS Shield


SparkFun MiniGen - Pro Mini Signal Generator Shield

3 Retired

Like its predecessor, the Arduino Pro Mini is open-source hardware, which means all of the design files are free to view and modify.

For more information on the Arduino Pro Mini, first check out our product page as well as Arduino's Pro Mini homepage.

Now that you know the basics of hooking up the Arduino Pro Mini, what project are you going to stick it into? Need some inspiration? Check out some of these tutorials and videos.

  • Wake on Shake -- Add the Wake on Shake to provide power briefly to a Pro Mini only when there is a shake or bump.
  • The Uncertain 7 Cube -- The Pro Mini is the brains of this fun riff on the magic 8-ball.
  • MP3 Player Shield Music Box -- This project uses an Arduino to control the MP3s and motors, but it'd be interesting to swap that out for a Pro Mini.
  • Mario the Magician's Magical Lapel Flower -- This project uses a Pro Micro to control the magical flower, but that could be swapped out for a Pro Mini too.
  • Interactive Hanging LED Array-- Create a giant LED array driven by the Arduino Pro Mini.
  • Reducing Arduino Power Consumption - Reduce current draw on your Arduino project.
  • LED Cloud-Connected Cloud - Add the Pro Mini with some WS2812-based Addressable LEDs to light up a cloud for an installation. Better yet, have the Pro Mini talk with the ESP8266 to connect online and have the LEDs react to the weather in your region!
  • Raspberry Pi Zero W - If the Pro Mini doesn't have the horsepower you're looking for, consider moving up to a Raspberry Pi platform. The Raspberry Pi Zero provides a smaller form factor.

MP3 Player Shield Music Box

Music Box Project based on the Dr. Who TARDIS.

The Uncertain 7-Cube

The Uncertain 7-Cube is a non-committal, less-than-helpful, but also entirely honest fortune teller. Simply ask it a yes or no question, give it a nudge, and the 7-Cube will dutifully inform you that it doesn’t have all the facts and doesn’t feel comfortable making a guess.

Mario the Magician's Magical Lapel Flower

A guest tutorial from the astonishingly talented Mario the Magician showing how to put together your own servo-controlled lapel flower.

Interactive Hanging LED Array

Learn how we converted 72 lightbulbs into an interactive LED array for our conference room.

Wake-on-Shake Hookup Guide

A basic hookup guide for getting started with the SparkFun Wake-on-Shake. The board gives you the ability to put your project into hibernation until bumped or shaken awake using the ADXL362 accelerometer. This means you can design projects meant to stay inert for long periods of time, possibly even several years, depending on the battery type used to power the project.

LED Cloud-Connected Cloud

Make an RGB colored cloud light! You can also control it from your phone, or hook up to the weather!

Reducing Arduino Power Consumption

A tutorial about different ways to reduce the current draw for your next Arduino project the easy way.

Or check out this blog post for ideas: