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Sep 13

Awesome weekend @ MakerFaire Zürich 2017

"The greatest show (and tell) on earth"

Last weekend, on September 9 & 10th, was the Zürich Mini MakerFaire - a "family-friendly festival for digital crafts and new technologies, with a focus on making, learning and sharing".

This was the second year the event was held in Zürich's Dynamo Jugendkulturhaus - a beautiful and atypical location on the bank of the Limmat river.

It was impressive to see how many people showed up for the event - way more than I had expected. Also impressive was the diversity of projects presented by the various teams, including 3D-printing, Steampunk contraptions, cosplay, electronics and DIY workshops.

Below are some pictures from the event:

@letootoot posing next to the giant maker lion

Some awesome projects presented during the weekend

The Dooba table, with Gadget Kits and Fiddles on display

Preparation for the event

The weeks leading up to this weekend have been quite intense for me, trying to get as many prototypes and kits ready for demo.

Printing enclosures & getting prototypes ready

Awesome feedback

Throughout the weekend, we received some very positive feedback regarding the ioNode, the Fiddle, and other products.

One of the key points revealed by this was the importance of Wifi connectivity. Many people indicated that while they appreciated the idea of a tiny gadget such as the Fiddle, they would have really liked to see some Wifi included in there. We received pretty much the same feedback for the kits.

I now know how to improve the Fiddle and have started working on a new version, a few millimeters longer, with Wifi and MicroSD included.

Working on a new Fiddle with Wifi and MicroSD

New libraries and tutorials

Now that I have a little more time to work on the SDK & documentation, I've started adding new libraries and tutorials.
Already available:

  • PWM (Pulse Width Modulation)

  • RGB LEDs

I've also completed the "client" part of the esp8266 library, offering quick and easy access to the internet through this very common Wifi module from Espressif (which is also the one that will be included in the new Fiddle).

I will continue to add more libraries and tutorials over time, so sign-up for the newsletter and stay tuned!


Aug 23

Getting ready for Maker Faire Zürich 2017

It's that time of year again

I can't believe it's already been a year...

The second edition of the Zürich Mini Maker Faire will be held on September 9 & 10 2017, at the Dynamo Jugendkulturhaus in Zürich.

Last year was an incredible success, with many projects presented in a wide variety of fields.

Let's hope we can have an even better experience this year!

Almost there

I'm currently working as fast as possible to get as many prototypes as I can ready for demo.

Here's a little sneak peak of what I'll be showing off during this event:

The Fiddle with some demo apps

Shiva MP3 Player

Trax Tank Controller

Of course, the ioNode itself


Aug 22

Introducing the Fiddle - Tiny UI for ioNode


I've often found myself struggling with UI for embedded projects.

User interfaces generally eat up a lot of board space. I thought maybe it would be interesting to have a "UI-as-a-module" that I could simply patch onto anything.

It turns out this was not only a good idea, but actually opened the way for more!

By attaching this module directly to an ioNode (with nothing else), you get a small, simple, elegant USB gadget on which anyone can develop apps.

UI has never been easier...

I gave my friend Mauricio Togneri the very first Fiddle I had put together. It was just a Fiddle & ioNode combo.

Two days later, he came back with this:

Snake - such a classic!

With no prior knowledge of AVR development or OLEDs, he managed to implement the classic Snake game in just a few hours using the documentation and tutorials available at - impressive!


The ioNode + Fiddle combo looked so nice, I could not just leave it like this. I fired up Blender and modeled a simple enclosure that my Ultimaker 2 Go printed perfectly in just under an hour (58 minutes).


About us

Dooba is an open-source embedded development ecosystem.

We design easy-to-use modules and boards for the maker community to build upon.

To support development of firmware, we also provide a minimalistic SDK which allows extremely fast and straightforward development of firmware components, both simple and complex.