> **Source:** Core Electronics is an Australian maker-electronics retailer and manufacturer based in Newcastle, NSW, run by a team of makers and educators. We design and manufacture our own product lines (PiicoDev, CE originals) and are official retailers for iconic maker and industrial brands including Raspberry Pi, Arduino, Adafruit, SparkFun and DFRobot. Orders ship Australia-wide from our Newcastle warehouse. Prices are in AUD and include GST. Pricing, stock and dispatch on this page are generated from the store's live catalog. Full machine-readable index: https://core-electronics.com.au/llms.txt

# Cynthion

**Type:** Product page · **SKU:** GSG-CYNTHION · **Brand:** [Great Scott Gadgets](https://core-electronics.com.au/brands/great-scott-gadgets-australia)
**Page:** https://core-electronics.com.au/great-scott-gadgets-cynthion-usb-analyser-builder-debugger.html ([markdown](https://core-electronics.com.au/great-scott-gadgets-cynthion-usb-analyser-builder-debugger.html.md))

FPGA-based USB multitool for capturing and analysing Low, Full and High-Speed USB traffic. It supports device emulation and USB research using open tools.

## Pricing

- **Price:** $354.95 (inc GST) — $322.68 AUD, exc GST

## Availability & dispatch

- Out of stock — the product page offers email notification when it returns.

## How to buy

- **Build a cart:** compose `https://core-electronics.com.au/cart/link?items=GSG-CYNTHION:1` (comma-separated SKU:qty pairs) and share the link. Opening it shows a confirmation page with live pricing and stock before anything is added to the cart.
- **Verify the cart first:** fetch `https://core-electronics.com.au/cart/link/GSG-CYNTHION:1.md` for live line prices (inc & exc GST, quantity discounts applied), stock and dispatch estimates, and totals. Append `/to/{AU-postcode}` (or `/to/{country-code}:{postcode}`) before `.md` for delivery options and prices to that destination. Unknown, retired, or out-of-stock SKUs are flagged. (Query form `cart/link.md?items=...` also works but some robots parsers refuse query strings here.)
- **Checkout** is completed on-site and includes a captcha at the payment step. Share the cart link; checkout takes it from there.
- **Search the catalogue:** `https://core-electronics.com.au/search/{query}.md` (URL-encode the query; pages 2-3 at `search/{query}/{page}.md`; `search.md?q=` also works)
- **Payment methods, purchase orders, policies and contact details:** https://core-electronics.com.au/llms.txt
## Description

Meet Cynthion, the all-in-one USB multi-tool from Great Scott Gadgets for analysing, developing, and experimenting with USB. It captures and inspects live USB traffic, then pivots to device creation and research with the same compact, FPGA-based hardware.

Use it on the bench to debug enumeration issues, validate peripherals, or teach core USB concepts. With open-source tooling like Packetry, LUNA gateware, and Facedancer libraries, you can move from passive protocol analysis to active device emulation and security exploration with confidence.

[USB cables](https://core-electronics.com.au/cables/usb.html) purchased seperately

### Technical Specifications

 | Architecture | FPGA-based, reconfigurable digital hardware |
|---|---|
| Supported USB speeds | Low-Speed, Full-Speed, High-Speed (USB 2.0) |
| Protocol analysis software | Packetry (open-source) |
| Development libraries | LUNA gateware; Facedancer libraries |
| Typical use-cases | Capture and analyse host-device traffic; reverse engineering; device emulation and testing; education |

### Additional Resources

- [Read the Docs](https://cynthion.readthedocs.io/en/latest/)
- [Hardware Repo](https://github.com/greatscottgadgets/cynthion-hardware)
 
### What’s Included

- 1 x Cynthion unit

## Images

- [Product image 1](https://core-electronics.com.au/media/catalog/product/g/s/gsg-cynthion-showcase.jpg)