Vortex Sequencer - Controlling Volca Bass, FM, NTS-1 and Roland S1 with Launchpad via Teensy 4.1

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The Vortex Sequencer takes 4 ordinary 64 step sequences and twists them onto a vortex. By choosing shapes on the Launchpad interesting sequences are produced with weird sounding "Bars".
In this example the Orange sequence is the Volca Bass, the Green sequence is the Volca FM, Blue is the Korg NTS-1 and Pink is the Roland S-1
Pressing a central pad toggles a random note in the current key on or off. To save time the pads along the bottom make patterns. There are 4 bars per synth but I only used 1 per synth in this example.

Everything is controlled by a Teensy 4.1 microcontroller in the black box on the left.


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Nice job with the vortex concept and the sequencing, John. I really liked the sound of that Roland.

Good work :)

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Cool. Interesting sequences and nice sounds. 👍

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seismic1 wrote: Tue Aug 19, 2025 11:19 pm Nice job with the vortex concept and the sequencing, John. I really liked the sound of that Roland.

Good work :)
Thanks Tim. This is just a proof of concept, I need to work with the system a bit more to get something more coherent I think.
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Wow, that's a powerful demonstration. Hardware boxes – and how they work –
and, above all, how Allomerus conjures up a song out of them. Great stuff,
great video! :clap:
free mp3s + info: andy-enroe.de songs + weird stuff: enroe.de

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Thanks Andy, sorry it took so long to get back to you.
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Love it!

to my family's annoyance, I still spend hours doing this sort of thing, (although mainly with software nowadays in my case)...still loads of fun, but not quite the same by any stretch as having the hardware!
Mark Taylor, Chameleon Music - Professional composition and sound design for all media since 1994.

https://www.chameleonmusic.co.uk/

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That you. It's a good thing your family love you and make allowances for your desire to have fun, like my family do.
My wife thinks I have enough synthesisers etc. but she is still happy to listen to my funny music.
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