The Ultimate Arduino Challenge

Congratulations to the Winners of The Ultimate Arduino Challenge! The Ultimate Arduino Challenge is a global contest for professional engineers. Winners compete for the "ultimate" bragging rights and amazing prizes including a trip to Italy! Participants were given the chance to create the best product or project using Arduino hardware. Thank you to our sponsors and all the participants for making the first Ultimate Arduino Challenge such a success!

See 2019 winners >

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The Ultimate Arduino Challenge has ended for 2019.

See official Rules and FAQs for general challenge information.


Eligible Arduino models that you can enter the Challenge with include:
Uno, Due, Leonardo, Micro, Nano, Mega 2560 (These models will require a shield to connect to the internet) Yún, and any board in the MKR series (no shield required to connect to the internet)

How do I enter?

By clicking on the Enter Now > link at the top of the page.

What is considered an entry?

For The Ultimate Arduino Challenge, you will need an idea and an image. Describe a technology problem facing people today and your proposed solution for it. No prototype or documentation is required - being bold and creative is what this first challenge is about.

For the remaining two challenges, you will be building a project and documenting the process. In your documentation, be specific and share the details others would need to build their own version of your project. To be eligible for judging in challenges 2 and 3 you will need at least 2 project logs or instructions.

What are the 3 Challenges? When do they start / end?

Choose to enter any or all of these three challenges. Each are 5 weeks long.

  • Arduino Idea Sprint - (2/26 - 4/5)
  • Internet of Things for Engineers - (4/5 - 5/3)
  • All About Data: Logging, Acquiring, and Calculating - (5/3 - 6/7)
How many Challenges do I need to participate in?

You may participate in one or all challenges to be eligible for one of the three prizes. We encourage you to participate in more challenges but it is not required.

Is it possible to win more than one challenge?

Yes. The same Project Profile may be entered in any or all of the challenge rounds using the "Submit Project To..." menu found on your project page. Projects should adhere to the theme of the challenge so you may also consider entering several projects in different rounds.

How do I see which projects have already been entered?

Check out this link

How much of my Project Profile will I be judged upon?

All parts of your project will be judged. We recommend you start with a brief summary to provide an overall understanding of your project. From there, explain each part in detail, adding images and diagrams as needed. A video is not required, but making one to walk others through your project is always a great idea.

What does "open" actually mean?

Open refers to how much you have documented about your project and how much you will make available to the public when you push your project out into the world. Optimally, we would like to see open source drivers, hardware, and development tools; the final project would also be licensed as open source (using the wide range of licenses that are possible). This is a judging preference, so providing design files in a format that uses open source tools (and therefore allows others to easily use or modify them), will help you with the best chance of edging out your competition.

What are the judges using as criteria for the semi-finalists?

You must complete the minimum entry requirements for the Challenge. Challenge entries will be judged on the following criteria:

  • Is this a unique solution to a particular challenge facing the world today?
  • How thoroughly documented were the design process & design decisions?
  • How easily can this design be implemented by other people in future projects?
  • How complete is the project?
What are the judges using as criteria to select the top three winners?

Ten entries from each challenge round will move on to the finals (30 projects in all). Three finalist entries will be judged on the following criteria:

  • How thoroughly has the project been completed?
  • Is the project functional?
  • How well documented is the project?
  • Is there base-level planning for the functionality (eg: functional block diagram, list of specifications and how they will be met, etc.)?
  • Is there a depth of design detail available (like a system design, CAD models, project test methods, etc), and how well do they demonstrate the project impact and viability?
  • Is the project creative, original, functional, and pushing boundaries?
  • How “Open” is the design? Preference will be given to projects that exhibit depth of Open Hardware and Open Source Software.
I'm under 18, are there special rules around entering?

Must be 18 and up to enter the contest.

How long will I be able to visit my project?

Projects will be able to be viewed for two months on this website after the end of this contest. We reserve the right to migrate them to another site afterwards. The link to your project will redirect so you will still be able to access it.

Meet the Judges

A panel of notable figures from the electronics engineering world have been selected to judge the Ultimate Arduino Challenge.

mouser microchip arduino