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

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

Sale price$157.50 Regular price$175.00
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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.
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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]
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SKU: 99958086890

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Mo
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★★★★★ 5
Love this
Color: Rustic Brown, Number Of Shelves: 4, Size: 15.7in
Love these shelves so easy to put up so beautifully made and really enjoy the way they set on my wall very sturdy also!
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Reviewed in the United States on May 21, 2026
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Jason
New York, US
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Color: Rustic Brown, Number Of Shelves: 2, Size: 22in
This shelf is lightweight, looks nice, and was easy to install. It comes with a little level to help you install it properly. There are plenty of mounting holes to choose from, so it is easy to screw it directly into a stud, or to just use holes that are convenient for you. It comes with a plethora of mounting hardware. I mounted mine a bit high up and chose to mount it upside down so that I wouldn't see the three screws that hold the shelf to the mounting bracket.
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Sonya H
Carnegie, US
★★★★★ 5
Excellent floating shelves look very high end
Easy to install and bracket is hidden once shelf is installed Very sturdy. Wipe clean surface.
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Reviewed in the United States on April 21, 2026
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Marily
Port Orchard, US
★★★★★ 5
Great shelves!
Size: 24x5.8, Color: Black, Size: 24x5.8, Color: Black
I love these shelves (I purchased 6 shelves total). The size I got was perfect, looks phenomenal, & quality is great too! Only negative thing I’d say is that it could be difficult for some people to set up as it needs to be leveled, & can be hard to align with other things since the part that attaches to the wall is separate from the shelf (due to its floating design) but once it’s up, it looks great. Definitely good value for money with its quality. I have them to hold up decorations/toys, & you think some of my shelves have about 5lbs of stuff on it & I’ve had no issues, so functionality is good.
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Reviewed in the United States on December 12, 2025
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Ken Antunes
Massapequa, US
★★★★★ 5
Easy install and looks good
Exactly as expected. Easy to install and look great.
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