GreatFET One

  • €110.00 €132.00
    Unit price per 
  • Save €5

Ever asked yourself: How do I talk to this piece of hardware : The GreatFET one is the answer.

Powerful platform for reversing, debugging and developing hardware.


If you've ever asked yourself the question: How do I talk to this piece of hardware : The GreatFET one is the answer.

Rounding up multiple individual tools in a powerful, complete, easy-to-use package, the GreatFET one is a hardware hacker's best friend.

Out-of-the-box use cases include:

  • Logic Analyser
  • Hardware debugger
  • USB Sniffer
  • Pattern Generator
  • Bit-Banger
  • Data logger
  • Reverse engineering

The GreatFET One has ample hardware features:

  • Native Serial Protocol support: SPI, I2C, UART, JTAG
  • Programmable Digital I/O
  • Programmable Analog I/O (ADC/DAC)
  • 100 GPIO Pins
  • Dual USB Ports (Fullspeed for target devices, Highspeed for host device)
  • On-board 3.3V regulator
  • 2MB Onboard flash
  • 4x Programmable LEDs
  • 2x Programmable Buttons
  • Expansion shields or "neighbours"

Robust Software

The GreatFET's killer feature is its software: a comprehensive Python 3 API that covers all all of the GreatFET's hardware features.

The use of Python APIs allows hackers to connect, interact and develop on the same device: No need to debug your debugger, no need to string together multiple tools.

As with all devices from Great Scott Gadgets, the GreatFET One is fully open-source, with comprehensive documentation online.

The GreatFET One pairs well with the Daffodil, a shield designed to make breadboarding and semi-permanent prototyping easy.

Technical Specifications

  • CPU : NXP LPC4330
  • Memory : 2MB Onboard
  • Host USB : Highspeed MicroUSB
  • Target USB : Fullspeed MicroUSB
  • I/O :
    • 100 pins
    • 2x 2x20 female headers
    • 20x male headers
  • LEDs : 4x
  • Buttons : 2x

What's included

  • 1x GreatFET One
  • 1x USB-A - MicroUSB cable
  • 1x "Wiggler" for safe shield separation

Technical Resources


Lab401's engagement is to get your orders to you as quickly as possible in a perfect condition. All packages are insured to 100% of the value, and Lab401 Delivery Protection can be used to ensure immediate re-shipment if a package is lost or damaged.

All orders are securely packaged. Premium and Express orders are further protected in an untearable polyurethane satchel, ensuring that your package is not tampered with during delivery.

To ensure privacy and reduce theft, all packages are anonymous - there is no mention of product contents or Lab401 branding on the outside of the packaging.

Shipping Options

Lab401 provides three types of shipping options:

  • Eco Delivery
  • Premium Delivery
  • Urgent Express Delivery

Eco Delivery is for available light and slim orders, particulaly cards, keyfobs and accessories. It is dispatched by La Poste (French postal system) and tracked.

Premium Delivery is our default shipping option: fast and reliable delivery via courier. Depending on the destination, Premium Delivery use UPS, DHL, FedEx, Chronopost or Colissimo.

Urgent Express Delivery uses the fastest possible delivery method possible: UPS Express, FedEx Express, DHL Express or Chronopost Express.

Lab401 provides same day shipping for Urgent Express orders made before 12PM GST+1.

Do you provide free shipping?

Yes - orders over 650€ excluding taxes have free shipping.

Customers that qualify for free shipping can still select rapid shipping options.

When will I receive my order?

Average order times can be estimated below.

Average shipping estimates can be seen by selecting the destination country / region below.

While actual shipping times may vary - these estimations are built off our real delivery statistics. To receive an order as quickly as possible, we recommend:

  • Use the Urgent Express shipping method
  • Use same day shipment by placing the order before 12PM GMT+1

Do you ship internationally?

We ship world-wide, but due to logistical or legal restrictions, we are unable to ship to the following countries: Martinique, St. Martin, Guadeloupe, Mayotte, Réunion, St. Barthélemy, St. Pierre & Miquelon, Moldova, Argentina, Belarus, Bolivia, Brazil, Cambodia, Chile, Ecuador, Georgia, India, Iraq, Kazakhstan, Kuwait, Liberia, Libya, Nepal, Oman, Panama, Peru, Russia, South Africa (Exception: Gauteng), Turkey, Ukraine, Vietnam, Egypt, Pakistan, Serbia, Spain (Balears, Ceuta,Las Palmas, Santa Cruz de Tenerif), Faroe Islands, Gibraltar, French Guiana, French Polynesia, French Southern Territories, Saudi Arabia.

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When will my order be dispatched?

Lab401 dispatches orders Monday - Friday.
All orders placed before 12PM GMT+1 will be dispatched the same day. All orders placed after this cutoff time will be dispatched the next business day.

For example:

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For any questions, please contact customer support.

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You will not be charged by the courier service / post office or customs.

For all destinations outside European Union, all shipments are DDU - Delivered Duty Unpaid. This means that your country's custom service impose a VAT/TVA/Import Duty on your shipment.

I am charged VAT ?

Lab401 (ETOILE 401 SAS) is an EU-Registered entity. VAT is applicable to purchases delivered within the EU, with exceptions for VAT Registered entities. VAT is calculated at checkout. For your convenience, you can browse Lab401 with prices Including VAT and Excluding VAT.

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Purchase Security Validation may be applied

To protect against credit card fraud, orders may be flagged for Purchase Security Validation. In this instance, we will reach out to the customer to perform a manual verification process.

Orders that are flagged for Purchase Security Validation are considered to be incomplete until validated. Our delivery deadline obligations begin only when an order is validated.

Delivery Protection

Is my delivery protected?

All Lab401 shipments are insured with the carrier.

We also provide an advanced insurance, Lab401 Delivery Protection.

Lab401 Delivery Protection means we remain fully responsible for the package right up to delivery. If the package is lost or damaged, the package can be resent immediately (48 business hours) upon receipt of proof.

For orders without Delivery Protection, lost or damaged packages will pass through the carrier's protocols, which can take well over 30 days.

For orders that are time-sensitive, we recommend Lab401 Delivery Protection.

Delivery Protection can be purchased at checkout easily and cheaply.