Great Scott Gadgets Cynthion USB 2.0 Protocol Analyzer & FPGA Dev Tool
Great Scott Gadgets Cynthion USB 2.0 Protocol Analyzer & FPGA Dev Tool - Image 2
SKU: IOWC-1599
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Great Scott Gadgets Cynthion USB 2.0 Protocol Analyzer & FPGA Dev Tool

₹19,059.00 (Inclusive of all taxes)
Out of Stock

The Great Scott Gadgets Cynthion is an FPGA-based USB 2.0 protocol analyzer and development tool, offering customizable hardware for monitoring, debugging, and emulating USB traffic on Linux, macOS, and Windows systems.

Features

  • FPGA-based architecture for fully customizable USB hardware functionality.
  • Captures Low-, Full-, and High-Speed USB 2.0 traffic as a protocol analyzer.
  • Integrates with Facedancer for USB device emulation and manipulation.
  • Open-source software stack, including Packetry for traffic analysis.
  • USB-powered and portable, with comprehensive community support and documentation.

Out of stock

Description

The Cynthion from Great Scott Gadgets is a versatile, FPGA-powered platform designed for USB protocol analysis and device research. Its core architecture allows the digital hardware to be reconfigured for specific tasks, enabling it to function as a high-fidelity traffic sniffer, a development board for USB peripherals, or a debugging multi-tool. This flexibility makes it indispensable for embedded systems engineers and security researchers working on USB interfaces.

Powered directly via USB, the Cynthion is a portable solution compatible with major desktop operating systems. It removes the barrier to advanced USB work by abstracting complex FPGA programming, allowing developers to leverage pre-built configurations and the Facedancer backend for device emulation. The open-source ecosystem, including the Packetry analysis software, provides full visibility into USB transactions for protocol development and vulnerability testing.

Key Features

  • Customizable FPGA core for adapting hardware logic to specific USB analysis or emulation tasks.
  • Comprehensive USB 2.0 protocol analyzer supporting Low-Speed (1.5 Mbps), Full-Speed (12 Mbps), and High-Speed (480 Mbps) traffic capture.
  • Facedancer integration for acting as a software-defined USB device, enabling peripheral simulation and fuzzing.
  • Open-source software suite with cross-platform support for Linux, macOS, and Windows environments.
  • Extensive documentation and active community support via GitHub and Discord for troubleshooting and development.
  • USB bus-powered operation for portability and ease of use without external power supplies.

Applications

  • USB protocol development and debugging for embedded systems.
  • Security research and vulnerability testing of USB device firmware.
  • Emulation and testing of custom USB peripherals in hardware development.
  • Educational tool for learning USB communication and FPGA design.
  • Reverse engineering and monitoring of proprietary USB device communications.

Technical Specifications

ProtocolUSB 2.0 (Low-, Full-, High-Speed)
Supported OSLinux, macOS, Windows
Core ArchitectureCustomizable FPGA
Primary FunctionProtocol Analyzer, USB Device Emulation (via Facedancer)
Power SourceUSB Bus Powered
SoftwareOpen-source (Packetry, Facedancer)
Dimensions (Shipping)16 x 12 x 3 cm
Weight (Shipping)0.167 kg

Frequently Asked Questions

What operating systems are supported by the Cynthion?

The Cynthion is fully supported on Linux, macOS, and Windows operating systems. You will need to install the open-source software stack, including the Packetry GUI for traffic analysis and the Facedancer backend for device emulation, which are available via GitHub. Drivers are typically handled automatically by the host system when the device is connected via USB.

How do I use the Cynthion to capture and analyze USB traffic?

To capture USB traffic, connect the Cynthion in-line between a USB host and device using the provided ports. Launch the Packetry software on your computer, select the Cynthion as the capture source, and start monitoring. Packetry will display decoded USB packets (setup, data, status) for Low-, Full-, and High-Speed transactions, allowing you to analyze protocol timing, data payloads, and endpoint communication for debugging or reverse engineering purposes.

Can I emulate a USB device without FPGA programming knowledge?

Yes, you can emulate USB devices without deep FPGA knowledge by using the Facedancer software backend. Facedancer provides a Python API that allows you to define device descriptors, handle control requests, and simulate data transfers. The Cynthion's FPGA is pre-configured to work with Facedancer, abstracting the low-level hardware complexity and enabling you to create custom HID, mass storage, or serial devices through scripting.

Package Includes

  • 1 x Official Great Scott Gadgets Cynthion Unit

Additional Information

Weight 0.167 kg
Dimensions 12 × 16 × 3 cm

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