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Fio v3 - ATmega32U4

Fio v3 - ATmega32U4

  • 3495

The Fio v3 is a new spin on the Arduino Fio hardware powered by the ATmega32U4.Not only is it small and LiPo-ready, it’s a very capable XBee-ready development board.

The JST-connector and 3.3v system voltage make this a great development tool for portable devices, simply plug in a Li-Poly battery and you’re ready to go. Wireless sensor networks and communication are made easy by the on-board XBee socket.

The ATmega32U4, running at 8MHz, makes it possible for you to use the on-board USB jack not only to charge a connected Li-Poly battery but to actually program the device! Because this board uses a similar bootloader to the one on the Pro Micro, you will need to download and install the special software driver below. There’s also a board definition add-on for the Arduino IDE which will add support for this board.

We’ve updated this to the latest version of the 32U4 firmware, see the firmware note in the documents below!

Note: See the GitHub link below for support with the Arduino IDE.


  • ATmega32U4 running at 8MHz
  • Arduino-Compatible Bootloader
  • XBee Socket
  • Lithium Polymer Battery Compatible
  • MCP73831T LiPo Charger
  • Reset button
  • On/Off Switch
  • Status/Charge/RSSI LEDs


Brand: Sparkfun
Brand Part Number: DEV-11520
Our Part Number: h5760


Makey Makey - Standard Kit
Makey Makey - Deluxe Kit
Teensy 3.2
Polymer Lithium Ion Battery - 2000mAh
XBee 1mW Wire Antenna - Series 1 (802.15.4)
Arduino Fio
XBee 1mW Trace Antenna - Series 1 (802.15.4)
Polymer Lithium Ion Battery - 850mAh
SparkFun Bluetooth Mate Gold
USB Micro-B Cable - 6'
Teensy 3.1 XBee Adapter

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