The Skull CTF

by Wokwi

A mind-bending hardware puzzle in three acts

View all updates Nov 26, 2020

Black Friday Special!

by Uri Shaked

Ahoy Mateys!


Black Friday Special: Tomorrow—Friday, the 27th of November—you can get your very own Skull for the special price of $20.32*, up a full $0.32 from the standard $20!** This is a once-in-a-lifetime offer that will be available for one day only! <Insert hard-selling CALL TO ACTION here.>

* Crowd Supply only supports whole-dollar pricing, so the Black Friday Special will actually cost $20.

** Actually, it turns out Crowd Supply does support partial-dollar pricing, you just can’t see it on the page. Sorry about that. Um…drop us a line if you want your $0.32 back?

About the Author

Uri Shaked


$3,298 raised

of $666 goal

495% Funded! Order Below

Product Choices


The Skull

A single The Skull CTF board (☠)


SparkFun Programmer

From the Crowd Supply Basics project.

Design your own puzzles and load them into The Skull's brain using this programmer! Mini USB cable not included.

AVR Pocket Programmer by SparkFun


EconoStik Header: DR VT SMT 2x3

From the Crowd Supply Basics project.

Use with the SparkFun Programmer.

One Amphenol FCI EconoStik™ 2.54mm Header. SMD/SMT Mounting style, Straight angled male pins, gold-plating. Voltage rating: 110 V



Wokwi creates tools for the Arduino and maker community, such as AVR8js, the Open source Arduino Simulator, and GoodArduinoCode.

Uri Shaked

JA Electronics


PCB Fabrication & PCB Assembly

See Also

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