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 Forum index » DIY Hardware and Software » Arduino
ESPSYNTH86 doing R2D2 stuff
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MapacheRaper



Joined: Feb 15, 2018
Posts: 150
Location: Spain

PostPosted: Thu Feb 21, 2019 6:18 am    Post subject: ESPSYNTH86 doing R2D2 stuff Reply with quote  Mark this post and the followings unread

The audio comes directly from the mic Phone, so excuse the quality. Live it sounds way clearer and crispier

It´s a generative patch doing kind of R2D2 sounds from some wavetable oscillators, FMs by wavetable LFOs and a semiimplementation of the karplus strong algorithm.

The hardware is a wemos d1 mini, trought a 4051 multiplexer and running the fantastic ESPSYNTH86 software by Budi Prakosa:

https://github.com/esptiny86/espsynth86

The video is here:
https://www.youtube.com/watch?v=uRPdX0R1gKY&feature=youtu.be
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MapacheRaper



Joined: Feb 15, 2018
Posts: 150
Location: Spain

PostPosted: Thu Feb 21, 2019 7:14 am    Post subject: Reply with quote  Mark this post and the followings unread

The basic wiring diagram

Remember to power the 4051 with the 3v3 and GND coming from the ESP board (not shown in this sketch schema) and add as many pots as you want following the same logic until 8


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PHOBoS



Joined: Jan 14, 2010
Posts: 4491
Location: Moon Base
Audio files: 627

PostPosted: Thu Feb 21, 2019 8:03 am    Post subject: Reply with quote  Mark this post and the followings unread

I am not really sure what you are doing but it sounds great. Razz

(pin 7 of the mux shoudn't be floating though)

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MapacheRaper



Joined: Feb 15, 2018
Posts: 150
Location: Spain

PostPosted: Thu Feb 21, 2019 8:27 am    Post subject: Reply with quote  Mark this post and the followings unread

PHOBoS wrote:
I am not really sure what you are doing but it sounds great. Razz

(pin 7 of the mux shoudn't be floating though)


party! Thanks Phobos!!

It´s basically a bunch of wavetable oscillators and LFOs modulating each other in the middle of a karplus strong feedback path. This is just a patch in a infinity of possible ones. You just define the patch here, ala reaktor:

https://esptiny86.github.io/espnode86/

And that produces a patch code that you upload via usb to the synth. So basically is a mini reaktor in hardware. The hardware costs something like 5-6USD in components and then the possibilities are endless. The brains under all this development is Budi Prakosa, so all merit goes to him.

In my implementation Im using all the pins of the 4051, is just that I don´t know how to use the kicad yet. So people, take the shema as a reference only
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PHOBoS



Joined: Jan 14, 2010
Posts: 4491
Location: Moon Base
Audio files: 627

PostPosted: Thu Feb 21, 2019 9:18 am    Post subject: Reply with quote  Mark this post and the followings unread

ah I see, I was a bit confused about the patch diagram assuming it doesn't actually run on a PC.
So it's a bit like a Nord micro modular ?

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badgeek



Joined: Mar 01, 2014
Posts: 2
Location: indonesia

PostPosted: Thu Feb 21, 2019 9:31 am    Post subject: Reply with quote  Mark this post and the followings unread

MapacheRaper wrote:
PHOBoS wrote:
I am not really sure what you are doing but it sounds great. Razz

(pin 7 of the mux shoudn't be floating though)


party! Thanks Phobos!!

It´s basically a bunch of wavetable oscillators and LFOs modulating each other in the middle of a karplus strong feedback path. This is just a patch in a infinity of possible ones. You just define the patch here, ala reaktor:

https://esptiny86.github.io/espnode86/

And that produces a patch code that you upload via usb to the synth. So basically is a mini reaktor in hardware. The hardware costs something like 5-6USD in components and then the possibilities are endless. The brains under all this development is Budi Prakosa, so all merit goes to him.

In my implementation Im using all the pins of the 4051, is just that I don´t know how to use the kicad yet. So people, take the shema as a reference only


karplus strong is highly on my todolist when espsynth came into mind!

you can try svg2shenzhen to create pcb design easily and ready to be manufactured https://github.com/badgeek/svg2shenzhen
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MapacheRaper



Joined: Feb 15, 2018
Posts: 150
Location: Spain

PostPosted: Thu Feb 21, 2019 2:37 pm    Post subject: Reply with quote  Mark this post and the followings unread

Welcome to the forum, Budi! party time!

Yeah, I would love to do an eurorack version of the pcb with a cool design, but Im still learning kicad. It´s a pity cause I have the design crystal clear in my mind but the footprints and library stuff of Kicad drives me craaazy!.
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Grumble



Joined: Nov 23, 2015
Posts: 1010
Location: Netherlands
Audio files: 27

PostPosted: Thu Feb 21, 2019 2:49 pm    Post subject: Reply with quote  Mark this post and the followings unread

Hey...this is very interresting Shocked
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