Pro Micro & Fio V3 Hookup Guide

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Contributors: Jimb0
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Introduction

Welcome to the new frontier of Arduino-compatible boards, made possible by the ATmega32U4. No longer does your Arduino need to be harnessed by an FTDI Cable, or an ATmega8U2, or any chip who’s sole purpose is acting as an intermediary between your Arduino and your computer.

Pro Micro

The SparkFun Pro Micro [ 3.3V/8MHz and 5V/16MHz ] is a really cool, little development board. It’s an Arduino-compatible microcontroller, micro-sized, and it accomplishes with one single chip what old Arduino Unos, Duemilanoves, and Diecimeillas could never dream of: true USB functionality.

Pro Micro - 3.3V/8MHz

DEV-12587
$19.95
13
Pro Micro - 5V/16MHz

DEV-12640
$19.95
68

FioV3

This tutorial also covers the Fio v3, which works a lot like the Pro Micro but adds features like easy XBee interfacing and LiPo charging.

Fio v3 - ATmega32U4

DEV-11520
$34.95
7

Covered In This Tutorial

This tutorial aims to introduce you to both the hardware and firmware sides of the Pro Micro (and Fio v3). We’ll also dedicate a few pages to helping install the boards on Windows and Mac. Here’s a summary of what will be covered:

Suggested Reading

Before delving into this tutorial, here are some concepts you should be familiar with. If you’re not, consider checking out the related tutorial first.