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1  Using Arduino / Audio / Re: Groovesizer: auduino with 16-step sequencer on: March 11, 2014, 02:07:05 am
Hey Duane,

Sorry, missed your reply before. That's right - it's the Auduino's grain decay. It sounds a lot like filter cutoff to me.
2  Using Arduino / Audio / Re: Groovesizer: auduino with 16-step sequencer on: February 27, 2014, 02:21:49 am
I've just released a new kit called Groovesizer RED ( which is a lot closer to the original instrument described in this thread. The most notable differences are  that the RED also has a MIDI input port in addition to the output so it can send and receive MIDI sync, and that there are now 16 LEDs, one for each step, as opposed to the original's 8. I've also implemented a host of new features, including a Live Mode, and note entry quantized to one of 12 preset or 4 user defined scales.
3  Using Arduino / Audio / Re: Groovesizer: auduino with 16-step sequencer on: November 25, 2013, 01:02:54 am
Kits and enclosures are once again available at
4  Community / Products and Services / Groovesizer (8-bit audio platform) - kits now available. on: September 30, 2013, 10:18:55 pm
I’ve just released a DIY kit called the Groovesizer. When I wanted to start learning about DIY music electronics I got myself an Arduino Uno board and started to experiment with all of the cool audio projects that have been created for the arduino.  I thought it would be useful to make a PCB that collected all the hardware for the different projects on one board, and that one could switch between with jumpers.

Long story short, the fruit of these labors is now up for sale at I’m in the process of making all the design files and code available, too.

The Alpha firmware features a 32-step sequencer and (basic) 3 voice synth. More will follow soon.
5  Using Arduino / Audio / Re: Groovesizer: auduino with 16-step sequencer on: June 27, 2013, 11:34:59 pm
I've posted some videos of the evolution of this project to

I hope to offer kits for sale in September.
6  Using Arduino / Audio / Re: a comupter musician's lovely tune. on: April 15, 2013, 11:08:53 am
Lovely indeed! Yes, it's Bonobo - the track is "Recurring" and it's off the album "Days To Come".
7  Using Arduino / Audio / Re: Groovesizer: auduino with 16-step sequencer on: January 27, 2013, 11:30:47 am
@DuaneB Thanks so much! Please do, I'd be honored to have this project added to the list. I'll definitely update the code with the volatile fix, thanks for the heads-up. Actually I must thank you for the output circuit - I played with your Illutron B project just before I started this one, so I still had your output circuit on the breadboard when I started this one. I've kept it for the final design.

@Giò LFZ I'm only sending note values (fixed velocity) and duration via MIDI - no cc's, though that's a good idea for Groovesizer V2 ;^)

8  Using Arduino / Audio / Groovesizer: auduino with 16-step sequencer on: January 26, 2013, 11:32:11 pm
I've attached a 16-step sequencer to the original auduino.

There's a video, Fritzing breadboard schematic and download link to the arduino sketch at the link:

I hope you find it useful   smiley
9  Using Arduino / Audio / Re: WavePro Shield - Beta Testers wanted on: October 11, 2012, 10:33:51 am
This sounds right up my alley - I've sent a PM (or two?)
10  Using Arduino / Audio / Re: Arduino library for WTV020-SD-16P audio module on: September 11, 2012, 12:18:02 pm
Hey guys,

Just a big thank you to the-rebel-agent for the library. I'm totally new to the arduino and electronics, but managed to get my module up and running with very little problems. I sourced my module from the e-bay link provided earlier in this thread and changed the solder-jumper to  5v. Everything seems to be working as it should.  smiley-grin 
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