DIY Synth #37 -- GranulArduino -- A simple granular synth using an Arduino Nano

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This is my take on Audiuno by @NotesAndVolts. I added CV inputs to all controls. It still needs some tweaks to make it respond better, but I'll save those for the next version!

Timestamps
00:00 Intro
00:16 New sponsor!
00:35 Front panel, pots, and jacks
01:36 Perfboard
02:08 Power supply
02:41 Mounting the perfboard to the panel
03:07 Connecting the inputs
03:36 Keeping the wires tidy
04:07 Pitch input and output buffer
04:42 Analog-to-digital converter
05:06 Octave knob
05:35 Labels
06:08 Final assembly
06:26 Demo and outro

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#SynthDIY #Eurorack #Arduino #MakeItMakerlab

[i_never_asked_for_an_alias]

Lovely. It's like the first words from a newborn. ;-)

[telegraph_hill]

nice! great technique to save time with front panel design. awesome.

[dillipphunbar]

Impressive. I bought a nano to do something similar (sampler), but I haven't a clue where to start except follow other people's projects. You are obviously far more accomplished and the result sounds really good.

[wylepeyote]

Tasty wee project. I have built a couple of arduino based desktop granular synths and was going to build the next one in euro rack format. This is a tidy implementation.

[sparkmusic]

This sounds really good! Hope to see more of these in the future! Great video

[garaughty]

Seriously brilliant work on this Benjie !

[pauls]

Hi Benji,

First off, let me say thank you for posting your builds online, and especially for offering the files and BOM’s as well. Very generous!

Wanted to ask about the soundtrack of the video you made for the GranulArduino. Was this all recorded from the GranulArduino? And if so, how did you process it? Clearly reverb, but anything else? It sounds great!

And you are using a sequencer?

It wasn’t clear to me how the two oscillators interact, the timbre of the sound does vary (and sounds great) but I can’t really tell if there are two separate voices or if one voice modulates the other?

Anyway, I am teaching myself building electronic stuff as well, and this looks like a great project with a very rewarding result!

Am very interested in your idea of a sample playback device, have you developed this idea any more?

[rockbolt]

wow!!! nice sound. Are you by any chance going to make the code and schematics available, please? I really would like to build one for myself. Thank you and VERY WELL :)

[TheScreamingFrog]

Thanks for your contribution to the Granular Synth community 🎶🌎☮❤
I don't have the skills, but would be great if someone could turn this into a PCB file with gerber files, so we could send out to have PCB made. Maybe do a batch purchase.
Best wishes for your continued success 🔥

[dtharmo]

Great job for a nice toy !

Just a simple silly question, the leds you added are directly from pins 2, 4, 9 & 12 through resistors ?

[runescaper]

Astig! buti nakita ko tong channel mo 🙌

[thenetware]

Excelente adaptação. Já construi tres unidades baseadas em notes and volts e fiquei feliz em encontrar a sua versão CV. É possível não utilizar o ADC e ter algum bom resultado? No Brasil é dificil encontrar esse componente e a exportação fica ridículamente cara por causa do frete e impostos. Agradeço se puder me ajudar com essa questão. Boa sorte e sucesso.

[Gears]

This seems like a fantastic project Benjie, but I'm not sure I understand what a granular module does in a modular synth setup. Does it use a sampled sound and take grains from that, or is it sampling grains from a VCO as input? What is actually happening "under the hood"?
What I do know, is that I would like to make one 😆

[artekworkshop]

Is it possible to play it alone without any other modular staf?

[_vespertine]

Can i use this code without the cv inputs, with the original auduino hardware plus the extra pots?

[andrewdok]

interesting device but I really cant understand such sound

[RodolfoEscobarS]

The project is fantastic but it is too frustrating not to be able to understand how it works to put it into action. Is there a tutorial or some basic reference? I apologize. Thank you.

[MaxUgly]

I want to take waveforms from data, like a big spreadsheet of some data unrelated to audio but it naturally oscillates over some point. Make that point zero, stretch it horizontally to make it make sound and play it back... Any idea how to make this happen? I have been trying to learn some python and PCM stuff and am decent at Excel, just can't seem to put it all together. Kinda rage quit a few months ago...