electro-music.com   Dedicated to experimental electro-acoustic
and electronic music
 
    Front Page  |  Articles  |  Radio
 |  Media  |  Forum  |  Wiki  |  Links  |  Store
Forum with support of Syndicator RSS
 FAQFAQ   CalendarCalendar   SearchSearch   MemberlistMemberlist   UsergroupsUsergroups   LinksLinks
 RegisterRegister   ProfileProfile   Log in to check your private messagesLog in to check your private messages   Log inLog in  Chat RoomChat Room 
 Forum index » DIY Hardware and Software » Arduino
Getting your hands dirty...
Post new topic   Reply to topic
Page 1 of 1 [4 Posts]
View unread posts
View new posts in the last week
Mark the topic unread :: View previous topic :: View next topic
Author Message
comrade_zero



Joined: Mar 05, 2009
Posts: 50
Location: arizona
Audio files: 4

PostPosted: Fri Jul 06, 2012 1:13 am    Post subject: Getting your hands dirty... Reply with quote  Mark this post and the followings unread

This post is for all of you members (or lurking guests) out there who:
a) already own an Arduino
or
b) are thinking about getting an Arduino
and want to know:
"What synthesizer applications can I reasonably make with this development board?"
In other words, I've got this microcontroller, now what am I gonna do with it?
So, let me offer a few project suggestions, hints, really, based off of a few projects I've built and played with, and some that I'm in the process of prototyping at the moment.

1) MIDI in functionality. Arduino can handle MIDI reasonably well, and while not a trivial undertaking, it is certainly viable. You will need to build a simple circuit (optocoupler etc.) but it is well worth the effort. Using a simple sawtooth VCO (the super-simple vco from Nicolas, here on the forum) and MIDI in, you can build a simple mono bass synth. (Add a simple sallen-key filter and an LED/LDR attenuator for some resonance and AM, and you have a nice little synth!)

2) Create a DCO. You can use the "tone" command to output square waves at a certain frequency. You can play with transistors and capacitors to create sawtooth waves based on your square wave. You can build a simple rudimentary DCO in this fashion. (I haven't gotten this one 100% yet, but check out Francois Best's site and his mixed control oscillator.)

3) Wavetable oscillators. There are a few projects around the web. Not for beginners, but well worth exploring.

4) Automated filter. Using LED/LDR combinations instead of OTAs in a wasp-style cd4069 resonant filter. Use pots and analog inputs to control attack/realease times...

5) Powerful analog step sequencer (currently in development). Use the Arduino as the "clock" to control two binary-to-decimal counters hooked up similar to the baby-10 sequencer. Allows for 16-step sequencing with voltages up to 15v.

soooo, what else are you using your Arduino for? I've seen a lot more activity surrounding it recently, which is great. The more project options the better.
Anyway, I hope this is food for thought,
c_z
Back to top
View user's profile Send private message
elmegil



Joined: Mar 20, 2012
Posts: 1473
Location: Chicago
Audio files: 14

PostPosted: Fri Jul 06, 2012 5:37 am    Post subject: Reply with quote  Mark this post and the followings unread

My first (and so far only) project was MIDI -> CV.

I have ideas (posted here: http://electro-music.com/forum/topic-54108.html) for a more complex MIDI -> CV scheme, and I think using SPI I can still use Arduino. But that's currently in my backlog Smile. As is potentially working with mrkva's auduino ideas.
Back to top
View user's profile Send private message
garcho



Joined: Sep 28, 2011
Posts: 39
Location: Chicago
Audio files: 2

PostPosted: Wed Aug 01, 2012 2:09 pm    Post subject: Reply with quote  Mark this post and the followings unread

Quote:
Automated filter


YES!

I'm interested in any goofy cv-out patterns. I'm just starting to make a multi-LFO box and want to use Arduino for more complicated patterns than just square, triangle, ramps, saws - things that are simple enough to make with opamps, transistors and OTAs. So how about sample and hold? or random wave shape or morphing wave shapes, etc.? Does it make sense to use an Arduino for that kind of crap? All I've done with mine is make a light blink with an LDR. Woot woot!

_________________
"The life of a repo man is always intense."
Back to top
View user's profile Send private message
Mdashdotdashn



Joined: Aug 21, 2012
Posts: 2
Location: Berlin

PostPosted: Tue Aug 21, 2012 5:19 am    Post subject: Reply with quote  Mark this post and the followings unread

Right now I've used it exclusively to build little synth engines.

My first attempt was to do an engine for the late critter and guitarri arduino pocket piano.

http://www.marc-nostromo.com/?page_id=14

And then moved on to 'augmenting' the midivox with LCD & potentiometers.

http://www.marc-nostromo.com/?p=134

I also have my hands on a SJS-1

http://devsound.se/2012/sjs-one

But didn't have too much time to spend my time on it.

Right now, I think I'll try to externalise the filter so I don't have to compute it in the arduino (and it'll be an interesting exercise to control the filter from there) and get more room for oscillator computations.

/M
Back to top
View user's profile Send private message
Display posts from previous:   
Post new topic   Reply to topic
Page 1 of 1 [4 Posts]
View unread posts
View new posts in the last week
Mark the topic unread :: View previous topic :: View next topic
 Forum index » DIY Hardware and Software » Arduino
Jump to:  

You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot vote in polls in this forum
You cannot attach files in this forum
You can download files in this forum
e-m mkii

Please support our site. If you click through and buy from
our affiliate partners, we earn a small commission.


Forum with support of Syndicator RSS
Powered by phpBB © 2001, 2005 phpBB Group
Copyright © 2003 through 2009 by electro-music.com - Conditions Of Use