MATRIXSYNTH: Search results for GND-1


Showing posts sorted by date for query GND-1. Sort by relevance Show all posts
Showing posts sorted by date for query GND-1. Sort by relevance Show all posts

Friday, November 18, 2011

Blue Lantern NOISE GENERATOR AND WAVE FOLDER


via this auction
See the seller's other items for more.

"Introducing the next lineup of module to get the Pro Panel treatment. It is the tried and true Analog Noise Generator, but the design was so slick I was able to fit a Lock Hart Wave Folder & Gate to Trigger converter. The entire back PCB area is less then 2" (1.5") in depth. It is made with SMT parts.

This is for Euro Format Modular Synth Cases. The user is to install this module themselves using a IDC cable which is included.

THE UNIT COMES WITH A 10 PIN TO 16 PIN IDC CABLE.
POWER SPECS: PLEASE READ THIS AND YOU SHALL NOT BE SORRY! THE MODULE CONFORMS TO THE NEWER DOEPFER POWER LAYOUT SCHEME. ON MY MODULES RED LINE IS (-12V) AND STARTS AT THE TOP.
THE SEQUENCE IS -12V/GND/GND/GND/+12V. SO +12V IS AT THE BOTTOM ON MY MODULES. ALL I DID WAS ROTATE THE DOEPFER STANDARD. THE MODULES COME SHIPPED WITH THE CABLE CONNECTED CORRECTLY. ALL YOU HAVE TO DO IS CONNECT THE RED STRIP TO YOUR -12V END ON YOUR CASE WHICH IF IT FOLLOWS MOST WILL BE AT THE BOTTOM. THERE IS A SILKSCREEN ON THE MODULE TO SEE THE LAYOUT ON THE HEADER ALSO.

THERE ARE SAFETY PTC RESETTABLE FUSES INSTALL ON THE MODULE THAT WILL OPEN THE CIRCUIT IF CONNECTED WRONG. BUT IT IS GOOD PRACTICE TO JUST READ DIRECTIONS. FEEL FREE TO EMAIL ME IF YOU JUST ARE NOT SURE HOW TO CONNECT THE MODULE TO THE EURO CASE FORMAT POWER STRIP.

MODULE
SPECS:
Width--4HP
Circuit 1: NOISE GENERATOR: White Noise, High Pass White Noise, Low Pass White Noise, Red Noise. There is a Trimmer on the PCB that will adjust the Loudness of the core Noise generator. 100% Analog. ALL OUTPUTS.
Circuit 2: Lock Hart Wave Folder: There is (1) Input, (1) Double Pulse Output, (1) Folded Output. In order to control the actual folding, an Attenuator is needed right before the Input Chain in your Patching. Sine or Triangle Waves work best here, but you are free to Experiment.
Circuit 3: Gate to Trigger Converter. This will make a Gate into a short Pulse. Useful for triggering Drum Synths. Again you can also experiment with feeding in slow LFO wave forms and hearing the Audio Result.

All that in 4HP!"

Thursday, October 20, 2011

Analogue Solutions VCO-SUB Analog Voltage Controller Oscillator w/Sub Output

via this auction
Noisebug (RSS)
"Manufacturer Description:
High-end VCO with Sub outputs

Width 12HP

Requires 5V

VCO is a single VCO laid out in a similar way to the VCO section you would find on a monosynth. VCO includes a glide (slew) function, so this is a great bonus. The VCO can go down to low frequencies so they can be used as an LFO.

Controls In Detail

Monday, October 10, 2011

Blue Lantern Rev4 DIODE VCF

via this auction
Blue Lantern on eBay

via the listing: "Here is my new Rev4 DIODE VCF. I also had Pro Panels made. This filter has a 10-stage Diode Ladder. It sounds so sweet! This is the best Diode Ladder VCF so far, and to top it off 6hp!!

These were built by me and are new. I tested each one myself and they are good to go. This auction price is Per Unit Cost. So (1) Diode VCF is $125.00
This is a small run of around 20 units. Get'm while there hot. They will probably go fast so don't wait to long.


Specs:
--------------------------------------------
(1) DIRECT CV Input
(1) FM Bi-polar Attenu-Inverter (+&- CV Input)
(1) FILTER OUTPUT
(1) EACH--HP/LP/BP inputs

There is a trim pot to adjust how much screech you want on the Rez pot. You can make it Squelchy or tame it down.

----I include a 10 PIN to 16 PIN IDC ribbon cable for you to connect to your Euro Compatible Modular Case. I use the Red Stripe is (-12v) standard. Please pay attention when connecting the unit yourself. If connected wrong you will fry the IC chips and see smoke.

The standard is as follows: -12v GND GND GND +12v. On a Doefper system the red strip usually will be on the bottom. On my modules the red stripe is on the top. All I did was rotate the standard connector on my PCB modules.

The panel is made of a High Grade PCB material with White Silk-screening done by a Pro PCB manufacturer. I had to include these costs on this newer unit."

DEMO OF NEW DIODE VCF REV4 by Blue Lantern

Monday, September 12, 2011

Blue Lantern VCO


via this auction

"THIS VCO HAS THE BASICS

THE SPECS:
WAVES: SAW(RAMP),TRIANGLE, AND SQUARE WAVE. SAW AND SQUARE IS SELECTED BY SWITCH.
-(2) 1V/OCT CV INPUTS
-(1) LINEAR CV INPUT
-(1) PULSE WIDTH MOD INPUT
-(1) HARD SYNC INPUT

POWER CONNECTOR: NEWER 10 PIN DOEPFER TYPE (-12V GND GND GND +12). THE STRIP LINE ON THE RIBBON IS -12V

KNOBS: TUNE, FINE TUNE, PULSE WIDTH FOR THE SQUARE WAVE.

FREQUENCY RANGE FROM 0.1Hz TO ULTRASONIC 20KHz"

Wednesday, August 03, 2011

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..."

Tuesday, May 31, 2011

EURO-FORMAT MIDI -2- CV CONVERTER

via this auction
"THIS MODULE IS USED TO INTERFACE MIDI KEYBOARDS, OR YOUR COMPUTER MIDI SEQUENCER. IT IS BASED ON THE 1V/OCT EXPO. STANDARD.

THE PANEL IS 12HP WIDE.


THE SPECS:
(2) PITCH CV OUTS
(2) GATE OUTS (~5V) (+5V ON, 0V OFF)
(1) TRIGGER OUT
(1) CC #100 CV OUT
(1) ACCENT (~5V) TRIGGER OUT
(1) SLIDE (~5V) TRIGGER OUT

THERE IS PORTAMENTO ON BOTH PITCH CV OUTS. IT IS CONTROLLED BY KNOB. THERE IS A BLACK SOFT RUBBER KNOB WITH GREEN LINE.
THERE IS A GREEN LED TO SHOW MIDI NOTE ACTIVITY.
BY DEFAULT IT IS SET TO MIDI CHANNEL 1 (ALL DIP-SWITCHES OFF), WITH A DIP SWITCH ON, ONE COULD CHANGE THE MIDI CHANNEL.

ON THE IDC CABLE, THE STRIP IS -12V. I FOLLOW THE DOEPFER POWER SCHEME OF -12V GND GND GND +12V"

Monday, February 14, 2011

TinySID on a 16 bit PIC


YouTube via markusgritsch | February 14, 2011 |
Layla at 1:00
"Ater successfully getting the TinySID library running on a PIC32 [1] some time ago, I recently wondered, if the 16 bit MCUs from Microchip would also be fast enough to run the code. It turned out, that they are, at least the 40 MIPS models (PIC24H and dsPIC33F).

A big hurdle is the (compared to the PIC32MX) small RAM on these chips. Since the SID tune must be loaded into RAM, only some small tunes will fit into the 8 kB of the MCU used on the Web Platform [2] I had at hand.

However, the source code [3] and binary [4] are available from Google Code. The PWM output is on IO7, and IO8 is used to switch the tune when pulled to GND.

Have fun,
Markus

[1] http://www.youtube.com/watch?v=ZNu0-M...
[2] http://dangerousprototypes.com/docs/W...
[3] http://code.google.com/p/dangerous-pr...
[4] http://code.google.com/p/dangerous-pr..."
Active links on YouTube

Friday, September 03, 2010

Doepfer FP5 Foot Controller

via Noisebug on Ebay
"NEW IN BOX
about 1m cable length, Stereo jack plug 1/4", potentiometer 10k linear (suitable e.g. for LMK4+/2+ or A-177)

dimensions:
overall: ~ 25 x 12 x 11 cm (down position) resp. 25 x 12 x 15 cm (up position)
Pin out of the stereo jack plug:
left (ccw) terminal of the potentiometer = GND terminal of the jack plug middle terminal (wiper) of the potentiometers = ring of the jack plug right (cw) terminal of the potentiometer = tip of the jack plug

Pay attention that not the full rotating angle of the potentiometer is covered but only about 50%. If the end terminals of the potentiometer are e.g. connected to GND and +5V only a voltange range 0...+2.5V is covered ! Of course the foot control inputs of our keyboards take this special behaviour into consideration but e.g. for DIY/OEM applications one has to pay attention to the limited rotating angle."

Wednesday, January 06, 2010

Elektron machinedrum SPS 1 UW triggering boss SYB 5 bass synthesizer pedal


YouTube via helefthandedheroes
"Elektron Machinedrum SPS-1 UW GND-SN machine triggering BOSS SYB-5 bass synthesizer pedal. The GND-SN machine routed to an individual out to Boss SYB-5 to INP-EA machine for filtering.
Just realized that the first few minutes had that stupid delay on.
All other sounds are machinedrum GND-SN sine machines!
At the time of recording I was first time trying out the pedal, only discovering the possibilities.
The video is to show what kind of sounds you can get triggering the SYB-5 with a GND-SN and was put into an electronic context.
Not a musical statement.
The video was shot with a Nokia N95, the sound quality is far from amazing.

SLEEP LESS :: LOVE MORE"

Wednesday, November 18, 2009

Elektron Machinedrum triggering BOSS SYB-5 Bass Synthesizer pedal

Elektron Machinedrum triggering BOSS SYB-5 Bass Synthesizer pedal from lefthandedheroes on Vimeo.


"Elektron Machinedrum SPS-1 UW GND-SN machine triggering BOSS SYB-5 bass synthesizer pedal. The GND-SN machine routed to an individual out -> Boss SYB-5 -> INP-EA machine for filtering.
Just realized that the first few minutes had that stupid delay on.
All other sounds are machinedrum GND-SN sine machines!
At the time of recording I was first time trying out the pedal, only discovering the possibilities.
The video is to show what kind of sounds you can get triggering the SYB-5 with a GND-SN and was put into an electronic context.
Not a musical statement.
The video was shot with a Nokia N95, the sound quality is far from amazing.

SLEEP LESS :: LOVE MORE"

Saturday, July 25, 2009

Elektron Machinedrum driving Korg MS-10


YouTube via darenager
"Using the Machinedrum to drive a Korg MS10

1. Set up a GND-IMP machine and a GND-SIN machine, in global setting route each of these to their own output - I used E and F in this example.

2. For the GND-IMP machine set it UP to 0, UVAL to 0, DOWN to 64 and DVAL to 127, set the track level and volume to maximum. This will be your trigger pulse, so connect a lead from the output you assigned this machine to into the MS10 trigger input. (output E in my case)

3. For the GND-SIN set it at maximum level and volume, also turn DIST in the routing page fully up (127), set the RAMP and RDEC to zero. This will be your pitch control, route it from its output on the MD you selected earlier into the VCO CV input. (output F in my case)

4. Select accent track and set it to max for all steps and all tracks, it is important that you do this or it won't work as the accent boosts the juice a bit.

5. Program some triggers for the IMP machine, then place triggers on the same steps for the SIN machine, using parameter locks on the PTCH control you can change the pitch played by the MS10, experiment with different envelope settings on the MS and different triggers for the IMP and SIN machines.

As you can tell from the video, there are a few limitations with this technique, first the pitch is not linear and does not act as anything like normal scaling, second on the MS10 you get some bleed though of the SIN sound. If you are electronically minded it should be feasable to build a little circuit to boost the CV output a bit.

You can also route the SIN to the V/OCT input or the filter CV input on the MS10, just remember to set the ENV/EXT knob on the VCO or VCF to a high setting or you won't get as much modulation. This can yield some interesting sounds, have fun and experiment. If you use the V/OCT input you can change the base pitch by playing the keyboard on the MS10.

This technique can also work with other synths or devices with CV inputs with varying degrees of success. Also you can use the LFO on the pitch of the SIN machine for some weird fx.

I think that is everything, if I have left anything out let me know.

Any questions let me know.

Cheers

Daren"

Monday, March 16, 2009

Roland TR77 Rhythm Machine

via this auction
"Roland TR77 Rhythm synth.
The Roland Rhythm 77 drum machine was Roland's first product (formerly Ace electronics) - released in 1972. It is actually an updated and relabelled Rhythm Ace FR-8L.

It was one of a trio of drum machines released by Roland that year, offering features intermediate between those of Rhythm 33 (TR-33) and Rhythm 55 (TR-55).

It comes in a flat wooden case with a metal base and has a holding for scorebooks - was dedicated to put at top of an organ for rhythm accompaniment.

General Product Information:
Contents
* 1 Rhythms:
* 2 Instruments:
* 3 Some technical inside:
* 4 External Sync

Rhythms:
· Latin: rhumba, beguine, cha-cha, mambo, samba 1&2, bossa nova, baion, bolero, tango
· Rock: rock'n'roll 1&2, slow rock, ballad, western, march, jazz waltz, waltz, cancel
· 2beat & 4beat: bass drum, snare, fox trot, swing, parade, shuffle

Instruments:
Bass drum, snare drum, lo conga, low bongo, high bongo, rim shot, maracas, high hat, cymbal, tambourine, guiro, cow bell. Rim are used for metronome, too.
has a little mixer for: bass drum, snare drum, guiro, high hats.
has a tempo & volume fader; and a fade-out option : for start there's no button, it's a finger-sensitive touch-bar, supports double tempo.
the power switch is not a primary AC-switch.

Some technical inside:
There's no IC inside - only one VCA...
Left: transformer, rectifier, softstart.
Mid: master clock, 5 dividers, reloop & down-beat LED, diode matrix.
The 1st divider is connected to the tempo-up switsch for a 1:1 or 1:2 ratio, the 2nd ones for switching between the 4/4 and 3/4 clock - 1:2 or 1:3 ratio.
Right: the voice board, mixer & output stage. BD, LC, LB, HB, rim are passive circuits.
Bottom: the rhythm switches...
External Sync
There's a little possibility to use din-sync on this device.
Logic board: leftest transistor, on its right the base resistor, solder on lower pin the clock line. For start/stop - its like a pedal switch - just put a transistor serial into the male connector: gnd=emitter, top=collector, base=start/stop line.

Works best at 8 ppm clock, up-tempo off for best results. On up-tempo on the guiro & tambourine it sounds bad as they have a 2nd trigger input which they get from the 1st divider."

Saturday, April 26, 2008

MITS Audio Sweep Generator

via this auction
"This is a working vintage tone generator which can be used for testing oscilloscopes or for producing cool vintage synth sounding effects. It is marked "MITS Audio Sweep Generator". It big dials on the front, some switches and screw terminals for connecting to whatever you want.

From left to right the dials are: "SWEEP RATE (10MS to 1 SEC)", "FREQUENCY (1 to 10)", "FREQ. RANGE (switch between 10, 100, 1K, 10K, 100K)", "WAVEFORM (switch between sine, triangle, square)", "AMPLITUDE (0 - 5)" and "ATTENUATOR (switch between 0DB, 20DB, 40DB)".

Along the bottom row, left to right: on/off switch; power indicator lamp; SWP terminal; SYNC SWP and WAVE terminals; OUTPUT DIR, GND and ATTEN terminals; SWEEP mode switch (SWP or CW); SWEEP reset buttonl SWEEP RATE switch (x1 FAST, x100 SLOW).

Condition wise the front panel looks awesome. It has a brushed chrome panel. The top cover is powder coated black and has a few chips and flaws. There's a silver label on the back with serial number "E11063", Mits logo and the text "Micro Instrumentation and Telemetry Systems Inc."

Dimensions of unit: 13" x 7" x 4"
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