Share your arduino based projects!

From circuitbending to homebrew stompboxes & synths, keep the DIY spirit alive!

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thealienthing
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Share your arduino based projects!

Post by thealienthing » Wed Mar 04, 2020 3:20 pm

Hey guys! I've only very recently dropped into the eurorack world but have been programming with arduino for the last couple years. I'm just curious to know what you guys have been able to accomplish with an arduino. Last night, I finished up a eurorack clock/divider module using an old arduino mini I had lying around. I'll post some pics when I get home from work but I'm all excited to see what you all have done!

Any eurorack modules made with arduino? How about stand alone synths or effects modules? Please share them here.

note: checked to see if such a topic existed but couldn't find anything like this. Sorry if it's a repeat.

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CrysWiz
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Re: Share your arduino based projects!

Post by CrysWiz » Thu Mar 05, 2020 11:20 pm

Best i can say is that i did some simple experiments using an arduino to make a PRSG and a very simple neural network. I shoveled the output to a DAC and into my modulars. Was fun but i got sidetracked with health and later, money issues. I still have a few arduinos around perhaps i should give it another round.
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CLee
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Re: Share your arduino based projects!

Post by CLee » Thu Mar 05, 2020 11:54 pm

Written on arduino IDE but using a Nano and Teensy 3.2

http://clsound.com/euclideansequenc.html

http://clsound.com/bits.html
http://clsound.com/bitseuro.html

Didn't write the code for this one, Neutron Sound brilliance
http://clsound.com/orgoneaccumulato.html

zerogroupsystems
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Re: Share your arduino based projects!

Post by zerogroupsystems » Mon Mar 09, 2020 11:49 pm

Here's an envelope generator I built with a temporary front panel (I'm hoping to laser cut some acrylic soon).

The output goes to a DAC and then to an op-amp.
IMG_20200309_222423.jpg
IMG_20200309_222451.jpg
uADSR.pdf
MCP48x1.h
uADSR.c
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Grumble
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Re: Share your arduino based projects!

Post by Grumble » Tue Mar 10, 2020 2:25 am

I have used loads of arduino's, mostly the Arduino NANO in lots of modules.
I must say that I used to solely program with Atmel Studio, but nowadays I use both the Arduino IDE and Atmel Studio to be able to use the Arduino library's.
You can do that by starting with the Arduino IDE, have the library you need working and import this into Atmel Studio.

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Re: Share your arduino based projects!

Post by tele_player » Tue Mar 10, 2020 12:15 pm

https://www.tindie.com/products/jc2046/ ... rack-10hp/

Based on an Arduino Nano. Not my project, but I'll be building one when the boards and parts get here.

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EATyourGUITAR
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Re: Share your arduino based projects!

Post by EATyourGUITAR » Tue Mar 10, 2020 1:34 pm

I hooked a 5v DAC to the 9v :eek: it died after making this video.


I wrote code that shifts focus to the last note ON message ignoring note OFF messages. this is how conflicts are resolved.
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Pelsea
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Re: Share your arduino based projects!

Post by Pelsea » Tue Mar 10, 2020 5:13 pm

Not exactly a module:

This is a contraption I built to let me control a WerkStadt with my WX5.
WX5adapter.jpg
This is based on an Arduino with a MIDI shield with a pair of 4725 dac breakouts (Spark Fun). This gives me outputs from the pitch and breath CVs directly to jacks plus a CV to MIDI knob and pedal to MIDI for the use of a Max patcher that was managing some plug-ins. (This was before I started my euro system.)

Now here's a module:
TeensyPlayground.jpg
This contains a Teensy 3.5 with audio shield and appropriate in/out level scaling circuits. I use it to add one off sources or effects to my rack. So far my favorites are a harp and a long term delay.
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rduif
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Re: Share your arduino based projects!

Post by rduif » Wed Mar 11, 2020 7:17 am

Not my project, but someone recently gifted me a pcb/panel of this clock divider/multiplier by Sound-Force: http://sound-force.nl/?page_id=2183
I'll be building this as soon as my Nano's are in.

<edited because of fake news>
Last edited by rduif on Mon Mar 16, 2020 4:41 am, edited 1 time in total.

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Re: Share your arduino based projects!

Post by tele_player » Wed Mar 11, 2020 10:36 am

The 12-bit braids isn't Nano-based - it's STM32.

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Lolo73
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Re: Share your arduino based projects!

Post by Lolo73 » Wed Mar 11, 2020 2:12 pm

I've just finished a quad logic module, based on arduino.
_DSC48876.jpg
I've made a video here, in french but with english subtitles :

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a_guy_called_tom
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Re: Share your arduino based projects!

Post by a_guy_called_tom » Thu Mar 12, 2020 9:14 am

The Polaron digital drum machine / sequencer is not Arduino, but Teensy 3.6 based:

Image

Image



Its on Github: https://github.com/zueblin/Polaron

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thealienthing
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Re: Share your arduino based projects!

Post by thealienthing » Thu Mar 12, 2020 9:42 am

Wow the polaron is seriously some cool DIY. You made this with the pjrc audio library?

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Re: Share your arduino based projects!

Post by Bitnik » Thu Mar 12, 2020 9:55 am

zerogroupsystems wrote:
Mon Mar 09, 2020 11:49 pm
Here's an envelope generator I built with a temporary front panel (I'm hoping to laser cut some acrylic soon).

I love the wooden panel. You may want to varnish it to protect it from grime, but it looks really great as it is.

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Re: Share your arduino based projects!

Post by a_guy_called_tom » Thu Mar 12, 2020 2:42 pm

thealienthing wrote:
Thu Mar 12, 2020 9:42 am
Wow the polaron is seriously some cool DIY. You made this with the pjrc audio library?
Yes, the audio part is mostly pjrc standard audio objects, sprinkled with a few customizations. The sequencer is custom coded, with many inspirations drawn from other instruments i like.

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batchas
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Re: Share your arduino based projects!

Post by batchas » Fri Mar 13, 2020 5:04 pm

thealienthing wrote:
Thu Mar 12, 2020 9:42 am
Wow the polaron is seriously some cool DIY.
+1
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thealienthing
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Re: Share your arduino based projects!

Post by thealienthing » Sat Mar 14, 2020 6:56 pm

zerogroupsystems wrote:
Mon Mar 09, 2020 11:49 pm
Here's an envelope generator I built with a temporary front panel (I'm hoping to laser cut some acrylic soon).

The output goes to a DAC and then to an op-amp.

IMG_20200309_222423.jpg

IMG_20200309_222451.jpg

uADSR.pdf

MCP48x1.h

uADSR.c
Nice code here. I might borrow some of this for making my own ADSR. Did you just use the op-amp to bump the output pwm to 8 volts?

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thealienthing
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Re: Share your arduino based projects!

Post by thealienthing » Sat Mar 14, 2020 7:15 pm

Here is a clock and divider module I made last week with an arduino pro mini. I made the panel by gluing thick pieces of paper together and drilling it out carefully :hihi: It's been a lot of fun running my teenage engineering drum machine with sequencer together.

Image

Image

Here is a link to the source code if you wanna look.

https://github.com/thealienthing/EurorackClockDivider

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Re: Share your arduino based projects!

Post by zerogroupsystems » Sun Mar 15, 2020 12:25 pm

Did you just use the op-amp to bump the output pwm to 8 volts?
Yes, I wanted 10V peak-to-peak. Note that I'm using an MCP4811 as a DAC instead of PWM because it seemed like a fun thing to do

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rduif
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Re: Share your arduino based projects!

Post by rduif » Mon Mar 16, 2020 4:40 am

tele_player wrote:
Wed Mar 11, 2020 10:36 am
The 12-bit braids isn't Nano-based - it's STM32.
You're right, my bad. Thought I recognized a nano, but its a blue pill.

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Re: Share your arduino based projects!

Post by CostantinoRizzuti » Tue Mar 17, 2020 6:43 am

Happy to share my first musical project made with Arduino in 2016. :mrgreen:

An expansion board for Arduino Uno that realizes a six-stage step sequencer producing 8bit tone sequences.

More info, schematic and code can be found here: https://www.artislab.it/en/step-sequencer-2/




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Re: Share your arduino based projects!

Post by tele_player » Tue Mar 17, 2020 9:45 am

How much does Oracolo weigh?

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JimY
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Re: Share your arduino based projects!

Post by JimY » Tue Mar 17, 2020 10:08 am

The bass pedals in my sig are Arduino powered. I wrote it up elsewhere...
https://www.diystompboxes.com/smfforum/ ... c=121451.0
I must say, at least for the midi out, I expected to find a project already written up. I didn't find any that worked for me and had to learn some programming. So it's also my first (and only so far) bit of Arduino coding.

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Re: Share your arduino based projects!

Post by CostantinoRizzuti » Wed Mar 18, 2020 10:25 am

tele_player wrote:
Tue Mar 17, 2020 9:45 am
How much does Oracolo weigh?
Sorry I don't know! I never weighed it, but I think it will weigh about half a kilo
It is painted wood. ;)

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JimY
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Re: Share your arduino based projects!

Post by JimY » Wed Mar 18, 2020 10:45 am

CostantinoRizzuti wrote:
Wed Mar 18, 2020 10:25 am
tele_player wrote:
Tue Mar 17, 2020 9:45 am
How much does Oracolo weigh?
Sorry I don't know! I never weighed it, but I think it will weigh about half a kilo
It is painted wood. ;)
I was hoping it would be a rusty old cast iron step from some ancient steelwork - for, you know, a step sequencer.

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