MATRIXSYNTH

MO-tron 2

YouTube Uploaded by Kaseo on Aug 2, 2011

"MO-tron 2

MO: Motor Oscillator

photo:
http://pikaseo.tumblr.com/post/8379686121/mo-tron2
http://pikaseo.tumblr.com/post/8379710681/mo-tron2

Dedicated to Yonemoto Minoru and Yuichi Onoue"

Monotribe has MIDI out hidden inside

YouTube Uploaded by Gameboygenius on Aug 3, 2011

"Someone suggested the "serial" connector on the Korg monotribe might spit out MIDI signals. That person was right!

Discussion on Muff Wiggler forums: http://www.muffwiggler.com/forum/viewtopic.php?p=531711#531711"

via nitro2k01:

"CONFIRMED! It is actually spitting out proper MIDI on the serial line! It gives you the following:

Note data.
MIDI sync, incl. start and stop messages.
Automation data for all of the LFO settings (both the knobs and the switches) and the EG shape. This suggests that the LFO and envelope may be created in software.

I have not yet hooked up an optocoupler and fed the thing MIDI from the other end, but I will. Shorting the serial out and serial in ports glitches the thing, so it most probably is capable of receiving MIDI.

Here's the pinout for the pin connector marked serial on the board.
Code:
CN12 MCU
1 Pin 20 PH0, TB0IN0, /BOOT
2 Pin 12 RXD0
3 Pin 11 TXD0
4 Pin 9 Vdd (3 V)
5 Gnd
6 Pin 29 PF6/SCK1

I believe this header was intended for factory programming of the firmware. When pin 1 is held low, the MCU enter a special programming mode, according to the datasheet. Pin 6 goes is routed up to somwhere near the power switch and is probably used to detect when a unit is turned on to begin the programming.

CN13 (which comes with no connector attached) would be used for debugging, but it is likely that debugging is disabled so you can't dump the firmware etc. Still haven't looked into that. (I don't have JTAG tools readily available, so...)

But what we're interested in is pins 2-5. Pin 2 is for receiving MIDI. Pin 3 is where MIDI comes out. If you're going to try to add an optocoupler, you'll also need Gnd and Vdd.

MIDI is a current loop protocol, so 3.3 V is no problem for standard MIDI gear given that you adjust the output resistors accordingly. Following the standard MIDI convention, I connected 3.3V and the output as usual, but replaced the usual 220 ohm resistors with 150 ohm ones. Works well enough.

I also got an idea: If the monotribe can receive MIDI, that may open up the possibility of throwing the internal oscillator out the window and using the it as a self-tuning MIDI CV interface for modulars. However, I've found that at least my monotribe tracks badly and sometimes drifts a little. This is especially obvious when comparing it to a well-tuned computer playing the same MIDI notes. Also, it's using just 5V internally for the analogue part (3.3V for the digital) and the CV range may be even less, so perhaps it wouldnn't be of much use for 1 V/oct systems.

More to come..."

New Modules from Curetronic

Clock Sequencer - ADSR
Attenuator - Dual SH
Quad VC LFO - Multiple
Quad Decay - Dual LFO
Quad Probability - VCF 121 LP
Quad VCA - CV Phaser
Dual Mixer - Dual Ring
Tool One - Divider
VCF 3379 - Switch
VCF Stonehenge - VCA
VCO - VCO Light
Quint LFO - Digi Noise

curetronic

BugBrand's Solar Powered Modular - Reflecting Four Years Later

"Four years ago I'd been DIYing modular stuff for a year or two at least and was having a lot of fun - but then I was faced with the challenge of how to take a system to Europe (on Easyjet). I ended up building this (built to the Easyjet musical instrument carry-on dimensions - of course, flying from the UK they totally DIDN'T let me carry it on...) and performed a 4am wobbly-techno set by a lake near Berlin for the Goldmund Festival - it was great."

See the full post on the BugBrandBlog

Ott performs with live painting

flickr By mikenusbaum

FM TECHRE - Autechre style FM drum synth VSTi & WIFE SEQ FX

YouTube Uploaded by discharj on Jun 17, 2010

"Ableton Max For Live - FM Drum Synth based on Autechre style algorithm's.
download now! http://www.beatwife.com"

FM TECHRE - Autechre style FM drum synth VSTi

Uploaded by discharj on Oct 26, 2009

WIFE SEQ FX

Uploaded by discharj on Jul 7, 2009

"VST plugin based on glitch by dblue. A programmable fx sequencer that sync's with its host's beat and bar count. created in mac osx intel.
download now! http://www.beatwife.com"

via musikgear

Prototype Jupiter-4 Featured in 1978 Ad

See the update in this post.

Teenage Engineering OP-1の使い方ドラムモード編

YouTube Uploaded by teenageengineering on Aug 3, 2011

"http://www.teenageengineering.com/"

Teenage Engineering OP-1の使い方テープ、ミキサー編

Update:

Teenage Engineering OP-1の使い方シンセサイザー編

Teenage Engineering OP-1の使い方ドラムモード編

Uploaded by teenageengineering on Aug 4, 2011