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.
  • 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]
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SKU: 99958086890

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Reviewed in the United States on April 17, 2026
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★★★★★ 5
Great feel and color
Size: Medium, Color: Ocean Depths, Size: Medium, Color: Ocean Depths
Absolutely love this tank top! The color is gorgeous and exactly like the pictures — super vibrant and flattering. The ribbed material feels soft but still has enough stretch to hug in all the right places. I also really like the built-in padding and racerback style because it makes it easy to wear without needing extra layers. The only thing I would mention is that it runs a little small, especially if you want a more relaxed fit. I’d recommend sizing up if you’re between sizes. Other than that, it’s a great basic top that looks cute dressed up or casual!
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Reviewed in the United States on May 20, 2026
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Jane of all Trades
San Leandro, US
★★★★★ 5
Vibrant Racer Back Tank !!!
Size: X-Small, Color: Hot Pink, Size: X-Small, Color: Hot Pink
I purchased this Danysu V Neck Racer Back Tank Top for Women Padded Ribbed Long Tank Fitted Basic Cami Tops to wear under my off-shoulder top for an upcoming 80’s dance party, and it works perfectly for what I needed! The bright pink color really pops and adds the perfect retro accent to my outfit. I intentionally ordered the XS because I did not want it to fit loose under my top, and it definitely gives a snug, fitted look. The ribbed material is soft and stretchy, and the built-in padding is a nice bonus. I would recommend sizing up if you plan to wear it alone or if you are curvier, as the XS runs very tight. However, for layering under another top as I did, it worked out exactly the way I wanted. Super cute, flattering, and great for layering or workouts!
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Reviewed in the United States on May 24, 2026
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Charleen
Boise, US
★★★★★ 5
My new Favourite Summer Tank Top - padded cup (no shelf bra!)
Size: X-Small, Color: Color Block Black, Size: X-Small, Color: Color Block Black
Cutest tank top, my new summer go-to. I was looking and searching high and low for a tank top which had padded cups without the shelf bra. Shelf bras are so uncomfortable with their elastic bands and are even worse in the summer, sweaty sun. I wanted something breathable, movable, and with just a bit of padding to cover the nipples and add the slightest big of shape. If you are large breasted these built in cups might not be the best for you, but as a smaller breasted lady these are perfect. The cups are not over the top bulky, but also they are not meant to really add "support" (for those who are looking for support this wouldn't be the tank for you. Think lightly padded!) The material is super soft and the length comes down to the hips. The tank doesn't ride up, so you're not always having to pull them down and adjust, and so you could wear them for both workouts or for casual summer evenings. I bought size XS and I am 5'1, 97 lbs. I was wondering if I should go to a size S because it wasn't clear by some of the reviews, but I'm glad I bought the XS because the shoulder strap is also the perfect length (not too baggy but also not super tight). Read the sizing chart before you buy - they are true to the size indicated on the sizing chart. Some have said theirs didn't come with padding, or the stitching was poor, but the ones I've received are totally fine. This tank is just plain-old comfortable any way you look at it. I'll be buying more colours!
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Brittany
Draper, US
★★★★★ 4
Great workout tank
Size: Small, Color: Cocoa
Great workout tank with built-in padding. Fits true to size, is comfortable and soft that hugs your form. Only reason I’m giving 4 stars is because the pads do get shifted around during washes, which is typical but frustrating. I air dry and haven’t had any issues with shrinking either.
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