FPGA Boards

iCEBreaker-bitsy FPGA

An open source iCE40 FPGA dev board in a Teensy form factor

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iCEBreaker-Bitsy FPGA adds the powerful flexibility of an FPGA to your next project in a convenient Teensy form factor. It works out of the box with the newest open-source FPGA development tools and easily integrates into a wide variety of projects.

The iCEBreaker-Bitsy FPGA board is designed to be pinout compatible with the widely popular Teensy microcontroller boards. This gives you access to a library of carrier boards and extensions that can be used for prototyping, gateware and firmware development. Thanks to Teensy to Feather adapter board you can also access the ever growing Adafruit Feather ecosystem.

We also offer a Pmod breakout board for the iCEBreaker-Bitsy that provides access to the large Pmod module collection. You can find a lot of different Pmods in the Digilent online store. For several use cases, we have also developed our own Pmod modules and we keep adding more as they are developed.

While the full size iCEBreaker is a great teaching and learning platform. The iCEBreaker-Bitsy is the next step where you integrate the power of FPGA into your own project. You can either plug it in using pin headers or solder it directly onto your board as a surface mount module.

Integrated Support

The iCEBreaker-Bitsy FPGA boards are already supported by the following FPGA design tools:

Icestudio editor screenshot
nextpnr editor screenshot

Features & Specifications

Pinout Diagram

Click to enlarge

Open Source

For more detailed and technical discussion of the hardware features, please visit our iCEBreaker GitHub repository. If you have questions regarding this project, or want to follow project progress in real time, please join our 1BitSquared Discord server.

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In the Press


"A fully realized development board for FPGA aimed at pretty much everybody"

About the Team


Eugene Oregon, USA  ·   1BitSquared  ·   1BitSquared  ·   1bitsquared.com

Embedded hardware and tool development and manufacturing company. We create hardware focused on promoting and supporting open source projects.

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