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Chickadee Tech F4FC

This an STM32F4-based flight control Polystack board for multirotors designed by Chickadee Tech. It features an STM32F405VGT6 microcontroller and an MPU-6000 accelerometer/gyroscope. It runs a modified version of Betaflight available here with the CKD_F4FC target.


See the wiki for documentation.


This control board is part of the Polystack platform for modular microcontrol systems. More information on the platform can be found at


If you need support with a board you own or have development questions please email or check for other ways to get support.


Please note that this project is released with a Contributor Code of Conduct. By participating in this project you agree to abide by its terms.


Components and footprints for PCB parts are not included in this repository. Instead, checkout the chickadee-tech/kicad-libs repository in the same directory that this repository is checked out in. All part definitions should be relative so that they will load correctly.

Pull requests

For fixes please submit a pull request to the original repository. After the pull request is merged, check the Chickadee Tech Active Contributor Discount (ACD) to see if you are eligible for a discount code to use on your next purchase.


If developing your own version of the F4FC please remove all Chickadee Tech trademarks and follow the CC-BY license. While not required, please consider open sourcing your modifications so others can learn from your improvements. If you do email and we may choose to add your project to the ACD.

You may also license the Polystack logo for free by emailing We'll ask for your gerbers to ensure the design complies with specifications laid out here and provide written permission to use the trademark after compliance has been demonstrated.

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