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FEZ Hydra Basic Kit

FEZ Hydra is a 100% open-source (hardware and software) .NET Gadgeteer compatible mainboard running .NET Micro Framework. It incorporates a 240Mhz AT91SAMRL ARM9 processor. With 16MB of SDRAM an 4MB of FLASH, FEZ Hydra is capable or running the most complex applications.

The Basic Kit includes the essential modules needed to get started with FEZ Hydra.

  • FEZ Hydra Mainboard
  • USB Client SP Module
  • LED7R Module
  • Joystick Module
  • LightSense Module
  • USB Cable
  • Reusable Plastic Storage Box
  • 14 .NET Gadgeteer Compatible Sockets
  • 240MHz ARM9 Processor (running at 200Mhz)
  • 16MB SDRAM
  • Complete Graphics support
  • TFT display interface (R/G/B sockets) with Touch screen
  • FAT16/FAT32
  • Full TCP/IP stack with SSL, HTTP, TCP, UDP, DHCP
  • USB Device
  • 4-bit SD card with no limit on SD card size
  • 3.42" x 2.44"
  • [Schematic]( Hydra schematics.pdf)
  • [Eagle Files]( Hydra 1.2
  • [Getting Started Guide]( Basic Kit Guide.pdf)
  • Gadgeteer Site

FEZ Hydra Basic Kit Product Help and Resources

Core Skill: Programming

If a board needs code or communicates somehow, you're going to need to know how to program or interface with it. The programming skill is all about communication and code.

3 Programming

Skill Level: Competent - The toolchain for programming is a bit more complex and will examples may not be explicitly provided for you. You will be required to have a fundamental knowledge of programming and be required to provide your own code. You may need to modify existing libraries or code to work with your specific hardware. Sensor and hardware interfaces will be SPI or I2C.
See all skill levels

Core Skill: Electrical Prototyping

If it requires power, you need to know how much, what all the pins do, and how to hook it up. You may need to reference datasheets, schematics, and know the ins and outs of electronics.

1 Electrical Prototyping

Skill Level: Noob - You don't need to reference a datasheet, but you will need to know basic power requirements.
See all skill levels


Looking for answers to technical questions?

We welcome your comments and suggestions below. However, if you are looking for solutions to technical questions please see our Technical Assistance page.

  • Gus Issa - GHI / about 11 years ago * / 4

    This video explains what gadgeteer is about.

    Want to run linux instead? Here is full tutorial on how to do so.

    Hope you guys like this exciting new technology.

    Gus Issa - GHI Electronics

  • Member #325766 / about 10 years ago / 3

    Wow a "4-bit SD card"? Talk about pulling out the stops!

    • MostThingsWeb / about 10 years ago / 3

      "You'll never need more than 4 bits of storage."

  • mhectorgato / about 11 years ago * / 3

    Can't say enough about the support GHI gives.

  • devhammer / about 11 years ago / 2

    I've got the FEZ Hydra, and here's a quick video of one of the latest things I'm doing with it:

    FEZ Hydra has power to spare, and .NET Gadgeteer makes it easy to work with.

    Full Disclosure: I work for Microsoft, and I'm a raving fan of Gadgeteer, as you can tell by the number of times I've blogged about it.

  • ianlee74 / about 11 years ago / 2

    The Hydra & Gadgeteer rock! GHI support is the best anywhere.

  • Member #343855 / about 10 years ago / 1

    So just recieved my Hydra but had a heck of a time loading the latest firmware version 4.2.4. (jumperwire across pins 8 and 10 on socket 3 etc.) After downloading all relevant SDKs and drivers decided to download a very simple 2010 VS c sharp project but get the following error... Error 1 Cannot deploy the base assembly 'mscorlib', or any of his satellite assemblies, to device - USB:Gadgeteer twice. Assembly 'mscorlib' on the device has version, while the program is trying to deploy version 4.1.2821.0
    Anybody experience the same?

    • Gus Issa - GHI / about 10 years ago / 1

      Did you install the software is in the steps on here? This is a troubleshooting guide as well

  • oddz / about 11 years ago / 1

    How does one use the networking on this if it doesnt have an ethernet port that i can see?

  • HungryMaggot / about 11 years ago / 1

    can I build my own Gadgeteer modules and libraries, or it only allows factory fixed Gadgeteer modules?

    • Gus Issa - GHI / about 11 years ago / 1

      Yes of course, actually many in the community have built modules that they are even selling

      All source codes and designs are open so you can easily get started

  • Cjhazdroid / about 11 years ago / 1

    Oops -- "...FEZ Hydra is capable or running the most complex..." should be "of" where the "or" is.

  • A Microsoft embedded programming platform? Where is the world going? I guess the anecdotal example by a Ford exec about restarting your car randomly as a matter of daily normalcy isn't that far away after all.. LOL

  • Eric Falsken / about 11 years ago / 1

    It says that it supports graphics. I've been dying for a SPOT.Presentation capable board. Is SparkFun going to carry the kit that includes touchscreen?

    • mhectorgato / about 11 years ago * / 2

      Not sure about Sparkfun’s plans, however, the vendor ( offers 3 display modules – 3.5" touch LCD, 128x128 OLED and a 16x2 HD44780 based display. They have a good selection of modules on their catalog site and provide tremendous support.

  • swestcott / about 11 years ago / 1

    If you are new to this the support forum at is I think one of the best and lots of sample projects as well.

  • ransomhall / about 11 years ago / 1

    Glad to see another NETMF board available here. The list of available Gadgeteer modules is over 50 and growing fast.

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