Auduina, The well tempered granular synth
A full video explanation here (in spanish):
The well tempered granular synth The Auduina is a granular synthesizer that can be tuned to any of the 12 tones of the modern western scale, generating pentatonic scales for each tone. It has a grain duration control, a grain frequency control and a sweep control that allows you to jump from note to note on the pentatonic scale. A sixth control determines the overall tuning of the generated scale. It is based on the popular Peter Knight project Auduino, with modifications by Patrick Enright that I finished fitting conveniently into the final code.
It has an optional light sensor to control the notes.

I have been using this instrument for some time now, being able to make modifications on the way.
I used this instrument on the following tracks:
(Brazilian tribute to the late Mark E. Smith from The Fall, Estación Experimental ). Natalia A. Murcielago.

The predecessor of this instrument was the Tucuduino Synth.

Frequently Asked Questions
What inspired you to do this?
Peter Knight project, Auduino
How long did it take to make it?
A couple of month, with sporadics upgradings
How long have you been doing things like this?
About 14 years, since I made my first Theremin
How much did this cost to do?
About 50 USD
Have you done other things like this?
Yes. I’ve been making all kinds of synthesizers, both analog and digital.
What did you wish you knew before you started this?
I wish I knew more about programming and pcb design.
Are there plans available to make this? Do you sell this?
You can try an old version of this project here:
Or you can buy me a kit (or a fully functional unit) writing me to: to pre-submit a new kit.
What’s next?
Maybe a MIDI In Version.
Just a soldering iron, some plyers

Mateo Carabajal : Musician, maker, teacher, engineer.
The maker Mateo Carabajal
Electronic engineer, teacher and musician. He has worked with microcontrollers and free software and hardware platforms such as Arduino since 2008. Dedicated to teaching in the electronics area, he gave workshop classes throughout the country and abroad, focused on hardware hacking and homemade musical synthesizers. Performs exhibitions and performances of electronic art in different art galleries and museums in Argentina.
His work inspired the documentary Los Aparatos de Mateo (2011), directed by the Tucuman filmmaker José Villafañe and winner of a mention at the Cannes Film Festival 2012 (Court Métrage. Short Film Corner. Cannes Festival. France).
He is guitarist for the rock band Estación Experimental; It is part of the experimental pop musical project Natalia A. He is carrying out the didactic electronics venture Los Aparatos, and the educational makerspace "Academia Mundial de Hacedores". He was coordinator for Educational Robotics of the Ministry of Education of Tucumán, from 2015 to 2019. He participated in the National Audio-Experimentation Panorama of the Sound Art Center of the Ministry of Culture of the Nation, being a producer of the Tucumán episode.

Connect with Mateo Carabajal
How I can help you:
I make diy synth kits. I give workshops from time to time
How you can help me:
Read my old blog. Pre-order a kit or a fully assembled unit writing to me at: