Thanks for supporting local! Our online shop is open & shipping orders. 


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


SparkFun 7-Segment Serial Display - Blue

2 items left

4-digit 7-segment displays are really neat little devices, it\'s a shame that they can be so cumbersome to control. Well we\'ve solved that problem by making them a little bit \"smarter.\" The SparkFun 7-Segment Serial Display combines a classic 4-digit 7-segment display and an ATMega328 microcontroller allowing you to control every segment individually using only a few serial lines.

The Serial 7-Segment Display can be controlled in one of three ways: Serial TTL communication, SPI serial communication or I2C serial. You can even program it for stand-alone operation since the ATMega328 comes pre-loaded with the Arduino bootloader! There is also an FTDI header on board and we\'ve provided a hardware profile for the Arduino IDE to make it even easier to program.

We\'ve made some layout changes to this design as well which will make it easier to incorporate these into your project. We\'ve moved the power and I2C pins to the sides of the board such that you can chain them together in order to display longer strings of digits. We\'ve also added mounting holes to the boards so you can mount them on standoffs (no more hot glue!)



* 4 digit blue alpha-numeric display with TTL, SPI or I2C Serial Interface
* Display numbers, most letters, and a few special characters
* Individual control of decimal points, apostrophe, and colon
* Selectable baud rate
* Selectable brightness
* Baud rate and brightness values retained in non-volatile memory
* Individual segment control for each digit
* 41mm x 23mm (1.6in x 0.9in)


* [Schematic](
* [Eagle Files](
* [Datasheet](
* [Hookup Guide](
* [Arduino Add-On](
* [Github Repo](

How We Give Back

We believe in giving back; We are proud to give 1% of all orders directly to environmental not for profit groups whose focus is the protection, preservation and restoration of our planet. This means every time you purchase from us, 1% goes directly to an environmental cause.