Soulsby Synthesizers. Home of The Atmegatron, a powerful 8-bit synth and
The miniAtmegatron, a synth shield kit for the Arduino Uno.

Soulsby Synthesizers Latest News

There's now 2 miniAtmegatron tutorials on the Tutorials page. The first shows you how to assembly it and the second shows you how to MIDI-hack your Arduino Uno. If you bought a MIDI-hacked Arduino Uno with your miniAtmegatron, there is no need to watch the second one. The MIDI-hack vid is for Windows users only. A Mac one will be uploaded next week (it's a different process for Mac).
Posted: August 30, 2015, 10:38 am

Good news! I have managed to ship all orders placed between Monday (24th) and Thursday (27th). I also have a fresh batch of Arduinos for the minis. Took a few late nights, but I'm pleased to say that normal service has resumed!

Posted: August 28, 2015, 1:33 pm

Just a quick note to say that the relaunch is going really well. I've been inundated with orders, which is great! The downside is that although I've started shipping, the most recent orders (from Weds/Thurs) may not ship until next week. Apologies for this.

This also means that I've fallen behind with making the video tutorials. Luckily Bent-tronics have already done an amazing assembly tutorial! I hope to do the tutorial for MIDI-hacking your Arduino Uno tomorrow (Friday), all being well.

Posted: August 27, 2015, 12:59 pm


The Atmegatron relaunches today at the new price of £199 / €299 / $299. It is available from the webshop and distributors will have stock imminently.
There's also a new 90 second promo which covers all of the essentials.
News on the much-anticipated Odytron software soon!


The miniAtmegatron launches today. It is a synthesizer shield kit for the Arduino Uno. The sound engine is based on the Atmegatron. They retail for £29 / €39 / $39. The kit contains the PCB, all components and instructions. It doesn't contain an Arduino Uno. By MIDI-hacking your Arduino Uno, the miniAtmegatron can be controlled via MIDI over USB. There will be a tutorial on how to do it this week.
This 90 second promo covers the essentials about the miniAtmegatron.
There is also a comparison table on the Products page.
Posted: August 24, 2015, 11:06 am

The new version of the Atmegatron source code is available here.

It's a complete rewrite, but fixes all sorts of nags and niggles including:

  • Function knob is always responsive (doesn't slow down with complex patches)
  • LFO and Arpeggiator completely tightly locked together
  • User waves increased from 6 to 16 (used in conjunction with Librarian software)
  • External MIDI clock + Arpeggiator no longer freezes at high divisions
  • Slightly improved Phaser algorithm
  • Setting for more natural sounding exponential envelopes (default on)
  • Setting for internal BPM (default 120)
  • Setting for note priority (default High)
  • Setting for legato mode (default on)
  • Easter Egg!

This a beta version. Once finalised it will ship with all the new Atmegatrons which will be available later this month.

The handful of people who have pre-release MiniAtmegatrons can also find new MiniAtmegatron source code with new features and tweaks

Posted: July 11, 2015, 2:38 pm

Soulsby Synths will be very involved at Noise Kitchen Synth Fest, held by Bastl Instruments. Come to Brno and say hi! Here's what we're doing:

  • 12th June - Synth Meet​- 11:00-21:30 - meet the makers, try out and buy crazy instruments.(Kabinet Múz, Sukova 4, Brno)
  • 13th June - Synth Workshops​- build synths ! 14:30 - ??:?? (Skleněná louka, Kounicova 23, Brno). If you would like to build a miniAtmegatron, sign up here:
  • 14th June - Synth Workshops​-11:00 - (Skleněná louka, Kounicova 23, Brno)
  • 13th June -Noise.Kitchen Party​- 20:00 - Soulsby(UK), Aeiou(CZ), Arsen(CZ), Tomash GHz(CY), BURNKIT2600(US), Nuuttipukki(SK), Hanz Tisch(ŽB), laserová instalace od BR Laser (AT) (Skleněná louka, Kounicova 23, Brno)
But there's also all these other fun things happening too!
  • 12th June - Synth Party​- 21:30 - epic music ! dance inevitable ! KODEK(Lv), HRTL(Cz), PROJEKT DATALINE(Se), PETER KIRN DJ SET(Us/De), MASTER CLOCK sharing (Kabinet Múz, Sukova 4, Brno)
  • 13th June - Synth Talk​- 12:00 - talk about the future of music with Peter Kirn of CDM (Kabinet Múz, Sukova 4, Brno)
  • 13th June - grand opening​- 16:30 (Skleněná louka, Kounicova 23, Brno)
  • 14th-16th June - Bastl synth workshops​-11:00 - (Skleněná louka, Kounicova 23, Brno)
Full details are here: ​​

Posted: June 12, 2015, 9:07 pm
older news

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