Cables & Connectors

Electronics Components

Motors & Controllers

On Sale items!

Get Professional Support

BBC Micro:bit


On sale items!


Check out our latest news to find out more about events, opportunities and partnerships.

Esmes' Electronics

Esmes' Electronics is a simple introduction to using the micro:bit written by a year 5 student.

Troys' tutorials

Learn with Troy by asking for support and, he will post a tutorial here to benefit all of our visitors. Free advice!

Feature teacher

Be inspired by some of our favorite teachers using our products.

Get professional support

Contact us now to request your own tutorial or learning resource.

This section doesn’t currently include any content. Add content to this section using the sidebar.

Image caption appears here

Add your deal, information or promotional text

Fio v3 - ATmega32U4

1 item left

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


* [Schematic](
* [Eagle Files](
* [Hookup Guide](
* [Datasheet]( (MCP73831T)
* [Firmware Note](
* [Board Definition Files](
* [Arduino Addon Files](
* [Arduino Addon Files (IDE 1.5+)](
* [GitHub]( (Design Files)