Great Scott Gadgets Cynthion - All-in-One USB Multitool
SKU: 99958086890

Great Scott Gadgets Cynthion - All-in-One USB Multitool

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Description

Great Scott Gadgets Cynthion - All-in-One USB MultitoolAvailability: 1 Week Lead Time To order, please email us at contact@makersupplies. sg Making USB Accessible Cynthion is an all in one tool for building, testing, monitoring, and experimenting with USB devices. Built around a unique FPGA based architecture, Cynthions digital hardware can be fully customized to suit the application at hand. As a result, it can act as a no compromise High Speed USB protocol analyzer, a USB research multi tool, or a USB

Availability: 1 Week Lead Time

To order, please email us at [email protected]

Making USB Accessible

Cynthion is an all-in-one tool for building, testing, monitoring, and experimenting with USB devices. Built around a unique FPGA-based architecture, Cynthion’s digital hardware can be fully customized to suit the application at hand. As a result, it can act as a no-compromise High-Speed USB protocol analyzer, a USB research multi-tool, or a USB development platform.

Out-of-the-box, Cynthion acts as a USB protocol analyzer capable of capturing and analyzing traffic between a host and any Low-, Full-, or High-Speed (“USB 2.0”) USB device. It works seamlessly with our open-source analysis software, Packetry.

Combined with LUNA gateware and Facedancer libraries, Cynthion becomes a versatile USB research and development tool. Facedancer makes it quick and easy to create or tamper with real USB devices—not just emulations—even if you don’t have experience with digital-hardware design, HDL, or FPGA architecture!

No extra cables are included! You may need a variety of USB A & C cables to connect to your computer/target.

 

Core Features

Cynthion is a fully reconfigurable test instrument that provides all the hardware, gateware, firmware, and software you need to work with—and, indeed, to master—USB. Below are a few of the challenges to which you can apply your Cynthion:

  • Protocol analysis for Low-, Full-, and High- speed USB. Cynthion provides everything you need for passive USB monitoring. With Packetry USB analysis software, Cynthion provides everything you need for passive USB monitoring.

  • Creating your own Low-, Full-, or High- speed USB device. LUNA provides Amaranth gateware that allows you to create USB devices in gateware, firmware, or a combination of the two. Using the Facedancer library, you can create or emulate real USB devices in high-level Python.

  • Meddler-in-the-Middle (MitM) attacks on USB communication. Cynthion hardware can function as a "USB proxy" capable of transparently modifying USB data as it flows between a host and a device. Each board’s three USB Type-C connections allow for simultaneous, high-speed proxying while maintaining a high-speed connection to the host. As a result, you can proxy a connection with or without the help of a host PC.

  • USB reverse engineering and security research. Cynthion hardware and LUNA gateware represent a purpose-built backend for research tools like Facedancer and USB-fuzzing libraries, thereby simplifying the emulation and rapid prototyping of compliant and non-compliant USB devices. Unlike other USB-emulation solutions, Cynthion-based hardware is dynamically reconfigurable, so it gives you the flexibility to create any endpoint configuration and engage in almost any USB (mis)behavior.

 

An Open-Source USB Protocol Analyzer

Image: Packetry interface

An Educational Platform for Learning About USB

Image: A fully open-source set of training materials walk you through the basics of USB - including descriptions and diagrams of the basic elements of USB, such as USB Transfers pictured here.


Resources

 

For assistance with Cynthion use or development, please look at the issues on the Cynthion GitHub project. This is the preferred place to ask questions so that others may locate the answer to your question in the future. For hardware issues use the cynthion-hardware repository.

Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
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Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 99958086890

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nooneimportante
Carnegie, US
★★★★★ 4
Good cover if you lose your Apple TV remote a lot
Color: Glow Green
This works great and I don’t lose my Apple TV remote nearly as often anymore. It glows in the dark, but it is pretty faint. The only other thing I don’t like is how the cover goes around the big button in the center. Sometimes it interferes with pressing the directional pad. It is diffferent than my last cover, but I’m adjusting to it.
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Reviewed in the United States on May 30, 2025
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Draco Malfinator
Cuba, US
★★★★★ 5
Glows in the dark!
Color: Glow Green, Color: Glow Green
I ordered this because I feel I’m always losing my Apple TV remote! This is super cute, fits the remote nice and snug. Was very affordable and has held up nicely for the price! Has little indents on the side where the buttons are to not impede use! I like the little grippies on the bottom! And the handle allows you to hang it if wanted
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Reviewed in the United States on October 21, 2023
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W. Wolf
Lake Worth, US
★★★★★ 5
No issues
Color: Glow Green
no issues to report, nice glow in the dark design, easy to put on....
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Reviewed in the United States on October 5, 2025
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Rohan lohala
Grantham, US
★★★★★ 5
Cool
Color: Glow Green, Color: Glow Green
I find it very clean and protective
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Reviewed in the United States on April 15, 2026
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Agmarie
Boise, US
★★★★★ 5
Apple Remote cover
Color: Glow Green
Fit is perfect. Colors shown are true to color. This one comes with a strap which doesn’t show in description which to me, was a bonus. Definitely a good buy.
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Reviewed in the United States on January 12, 2026

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