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MODEL: EURO 7HP SIMPLE DIGITAL ADSR v2.1
Envelope Generator Width: 7HP DEPTH: 1.5 inches CURRENT: +24mA , -13mA This module is an envelope generator. It offers Attack, Decay, Sustain, Release, and a 'time' knob to alter the length of the stage or 'loop'. You use this module to control other modules, for example: VCA's, VCO's pitch, Filter's. When in loop mode, the output is audible. Control Knobs: Attack, Decay, Sustain, Release, Time. Switches; Linear or Exponential mode. There is also a switch for Normal one pass, Gated mode, or Loop mode. Gated mode is like loop mode but it will only cycle with a gate signal patched up. Outputs: (2) simultaneous envelope outs. Inputs: (1) Gate or Trigger input, there is a passive thru jack for you to keep daisy chaining the gate patch to other envelope generator, (1) CV input with level CV knob to voltage control the envelope output level. Retail is $89.00 |
| blm-simple_adsr_v2.1.pdf |
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Model: Asteroid Operator VCF.
ANALOG FILTER Width: 23hp Depth: 1.5 inches Current: +85mA, -90mA This is a very unique filter with 8 flavors, all usable simultaneous. Features 8 filter output combinations.
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Model: Midi to CV converter
Width: 10hp
Current: +92ma, -2mA
This is a midi to cv converter that will take DIN input or (ring and tip)3.5mm midi input. This is using Yarns firmware by Emilie Gillet. The segment display is a beautiful diffused white color. The cost of the custom display was added into the build.
PCB Stack on the back is: 1 Level. Skiff compatible.
This projects is CC-BY-SA.
Width: 10hp
Current: +92ma, -2mA
This is a midi to cv converter that will take DIN input or (ring and tip)3.5mm midi input. This is using Yarns firmware by Emilie Gillet. The segment display is a beautiful diffused white color. The cost of the custom display was added into the build.
PCB Stack on the back is: 1 Level. Skiff compatible.
This projects is CC-BY-SA.
| public-mtcv-v5-10hp_confirmed.zip |
| blm-midi_to_cv.pdf |
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Model: Simple VCLFO
Oscillator LFO Depth: 1.5 inches Width: 4 HP Current: +13mA, -13mA What does this do? This is another analog lfo made specifically for new clients who are on a really tight budget. I am offering a mini series called the 'Simple Series', which gives you the basics. So this particular module is good for modulating your filter module or vco module for example. Price: $89.00 |
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Model: Mini Shimmery Module MK2
Percussive Metallic Generator Depth: 2.5 inches Width: 10hp Current: TBA Colors: Matt Black What does this do? There are 3 square wave oscillators that ring mod each other twice to produce 'shimmery' sounding tones or drones. The internal sound does not stop. When you patch from the 'drone' jack it is a constant sound. You use the A, B, and C knobs to tune each individual oscillator. Then you use the 'Tune' Knob to adjust all of the oscillators when you find that perfect sound. There is a TR influenced circuit that uses the abrupt dirty transistor vca to produce hi-hats or metallic percussion. I added the essential accent control to vary the amplitude. You need a gate or trigger signal from an lfo, etc, to activate the TR VCA portion of the module. Otherwise if you want clean hi-fi sounding percussion from this unit, you patch from the 'Drone' jack to your hi quality ssm2164, or cool audio v2164 vca. Price: $125.00 |
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Model: Subharmonics Generator
Utility, VCO addon Depth: tba Width: 4hp current: tba Controls: 4 Knobs to mix in 4 divided sub harmonics. What does this do? This is a vco add on or helper. You patch a saw, square, triangle , or sine wave into the input jack. Now patch the output jack to a mixer module. For example you can use the Blue Lantern modules: Sir Mix Alot, Mix Em Up, or other third party mixers. You also patch one of the original waves from your vco (this is optional as you will still get audio results, it is just fun to mix the o.g. with the sub fat waves.) What you will hear with your gear is one supper fat mixture of harmonics. You have 4 knobs to mix in each harmonic. The module can handle a full wide frequency spectrum. The module is using CD4013 Flip Flop IC to do it's 4 divider break down. There is no latency, no Atmega or STM shenanigans. Take a look at the oscilloscope pictures. I sampled a saw wave, and square wave from a Simple Saw Core VCO and patched it into the Sub Generator module. knob 1: 7th note down from input knob 2: 7th note, 1 octave down from input knob 3: 1 octave down, from input knob 4: 2 octave down, from input. Still not convinced, did I mention it is $68.50? |
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Model: Barton Duo Quantizer
Quantizer, Utility, Sequencer addon Depth: 1.5 inches Width: 4hp Current: +30, -26mA This is a quantizer based on the Michael Barton simple quantizer firmware PIC. There are two identical circuits found on this module. You can select two modes using the toggle switch. The 'Stand' mode is the standard mode which includes the follow scales: STANDARD BANK 1.Bypass - Inputted voltage is outputted 2.Major - Root, 2nd, 3rd, 4th, 5th, 6th, 7th 3.Minor - Root, 2nd, flat 3rd, 4th, 5th, flat 6th, flat 7th 4.Major Pentatonic - Root, 2nd, 3rd, 5th, 6th 5.Minor Pentatonic - Root, flat 3rd, 4th, 5th, flat 7th 6.Blues Scale Root, flat 3rd, 4th, flat 5th, 5th, flat 7th 7.Whole Tone - Root, 2nd, 3rd, flat 5th, flat 6th, flat 7th 8.Chromatic - All 12 notes The 'OCT' mode is the Octave BANK, which includes the following: OCTAVE BANK 1.Bypass - Inputted voltage is outputted 2.Octave - Root 3.Octave and Fifth - Root, 5th 4.Octave and Flat Fifth - Root, flat 5th 5.Major Arppegio - Root, 3rd, 5th 6.Minor Arppegio - Root, flat 3rd, 5th 7.Dominant Arppegio - Root, 3rd, 5th, flat 7th 8.Chromatic You use the knobs to select the different scales. Price: $110.00 |
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Model: BLM Quad Quantizer MK2
width: 6hp Current: +32mA,-32mA What does this do? This module converts 0-10V signals into 0-5V Quantized out signals. You can for example quantize your sequencer, envelope generator, or positive portion of a -5v/+5v signal (vco). You setup the scale you want using the knob, and all four inputs can act independently, however every channel is using the same scale. Here are the Scales: -Chromatic -Major -Major7 -Minor 7 -Dorian -Minor -Pentonic -5th -WholeTone -ASR Linear -Tune Frequency mode: 4.75V. 440Hz 'A4' Musical Note. Tune Frequency Mode is used to tune your vco to 440Hz. A triggering signal is required to activate and force the module to quantize incoming voltage. There is an led to signal triggering. The trigger signal is converted to a gate output. Buy One Now |
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Model: Mini FM Joystick
Utility, addon, Joystick Depth: 1.5 inches Width: 6hp Current: +6mA, -6mA This is a nice small joystick to add some control to your modular. The joystick is acting as an attenue-inverter. At center position is zero. Swinging the joystick side to side gives + or -. There are two attenue-inverters, one for each axis. When nothing is patched into the 'input' jack, the joystick is using an internal reference voltage (7v). You can use that to control a fitler module for example. When you patch a vco or lfo into the input jack you can add some fm to another external vco and have control over the FM with the Joystick. The joystick also has a push button. The gate out jack allow you to trigger your other modules that don't have manual trigger control. Price: $95.00 |
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Model: HPA FXSND
FX Send and Return, Final output, Headphone Monitor width: 7hp depth: 2.5 inches current: 20mA, -20mA Color: matt black function: Line Level FX send and return, and headphone monitoring What does this do? This module will turn a mono euro format "synth" signal into stereo channels with line level outputs (3.5mm jacks). It will also allow for send and return of a stereo fx external unit. There are level knobs for the send and return to get the volume just right. The master knobs on the top adjust the final line level output signals. The module can function as a headphone monitoring module when you don't have an external mixer or speaker amp. on hand also. The master level knobs on the top adjust the headphone levels. There is no dedicated headphone knob, so if you are recording from this module to your DAW you would have the master knobs just about fully clockwise, making the headphone amp loud. The headphone feature in this case would not be used. Price: $95.00 |
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MODEL: EURO FORMAT CMOS RING MOD MODULE
RING MODULATION width: 4hp depth: 1.5 inches Current: +40mA, -10mA Color: matt black This module is a ring modulation effect that is based on old arp odyssey circuitry with a twist. On the original it only mixed pulse waves internally. On my version you can adjust from pulse to triangular waves. Think of it like a tone control. Th operation of this product is easy. You patch any wave into "A" and another wave into "B". It is best to use separate vco's or noise sources tuned at different frequencies. You then hear the effect out of the bottom jack "cmos ring mod". Price: $75.00 |
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Model: Simple Dual NJMVCA
DUAL OTA VCA, PANNING FX width: 6hp depth: 2.5 inches current: 25mA, -25mA color: matt black What does this do? This module is a skinny dual vca. It uses NJM13700 OTA IC chip to do voltage control amplification. This IC chip is a classic and found in vintage Roland, Moog, Yamaha, etc. The IC chip on the simple dual vca is a modern smt equivalent made in Japan. Each vca has it's own audio input level knob, and VCA adjust knob. The audio input has some gain to it which allows some over drive. There is also a dedicated CV knob to adjust voltage control level. The 'LFO' jack is where you can patch an LFO to make the simple dual vca do stereo panning. There are two LED's on the top to indicate left and right rotary action. What is the difference between this vca and the blue lantern stereoscopic vca? The difference is in the coloring. This ota based vca colors the sound when over driven. The sound is very vintage on this vca. On the stereoscopic vca, the sound is very precise. If you love the roland jupiter sound, this vca is for you. Price: $135 |
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Model: LM4250 Sour VCF 2016 Re-release
Analog Filter, VCF width:6hp current: 9mA, -9mA depth: 1.5 inches What does this do? This is an analog filter based on the polivoks vcf. This particular design uses the programmable LM4250 IC op amp to do it's filtering. There are some additional circuits not found on the classic original. The brite and dark switch is one of them. It allows for some decimator sounding timbres. There is also a diode limiter to allow the user to explore very high resonance settings. This is selected by switch also. Controls: Cutoff, Rez, Bi-polar FM modulation, and Audio Input level. Jack inputs: (2) CV direct jacks, FM input, and Audio input. Jack Ouputs: Low pass filter, band Pass filter. Price: $150.00 |
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Model: Millipede Variable Pole VCF MK2
Analog Filter, Can easily get Brutal tones. width: 13hp current: 58mA, -56mA Depth: 2.5 inches What does this do? This is an analog filter that uses two modern equivalent ssm2164 IC's v2164 from cool audio to do it's magic. This particular filter however allows the user to vary the phase of each pole or filter cell. There are four filter cells total. This is similar to the Blue lantern Asteroid Operator Station VCF. The Asteroid Operator Station VCF has 8 Static filter out puts. Those 8 flavors were found by exploring the circuit found on the millipede vcf and internally installing the resistor ratio for that flavor. On the millipede vcf you are allowed to find more exotic flavors yourself. Operation is easy. You first have all the poles counter clockwise and the three switches set to mute. This will have the filter as a dark Low pass filter. Then you turn on a pole using the switch and turn the know to hear the change. Pole 3 by default is always on, otherwise there would have been no sound if all poles were muted. Having all the poles set clockwise and active easily gets you into brutal sounding tones in a good way. There is an on board diode limiter circuit to help tame really harsh tones. This is activated by switch. The audio input has some gain, so you don't always have it fully clockwise. There is also a capacitor selector switch just like my other filters. This modifies the rez peak. Price: $250 |
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Dwarf Star Stereo Delay MK1 (Retired)
Stereo Delay, FX width: 18hp current: 10mA, -6mA depth: 1.5 inches FX Chip: PT2399. Signal Levels for In/Outs: modular synth levels -5/+5. What does this do? This module has two echo delay effect circuits based on the Dwarf Star Semi Modular system. With this module you can add cool delay fx to synth level signals. Each of the parameters has CV control with their own attenuators. There are three parameters per channel. The two echo fx circuits are mirrored on the front panel: Channel A and Channel B. The fx processing was fine tuned for clean fx processing. When the feedback is fully clockwise it will not go into trashy garbage. You can however patch a cv input into the 'REPEAT' parameter, have the RCV attenuator fully clockwise, and force it to feedback into loud trash. There is no switch jack on the input jacks. However, all the CV jacks have switch jack internal connections. This allows you to modulated both channels using only the the Channel A side. For true independent patching on each separate channel simple patch something into the corresponding Channel B jack. The Kill toggle switches kill the dry signal input going into the pt2399 fx chip. It will however allow echo trails to keep going until they die out. So this is not just a mute switch to abruptly cut the echo trails in half. I feel this is better for live manipulation and recording. There is a reference manual on the pdf manuals page of this website. Nice Price! Price: $185 Youtube dwarf star stereo delay demo below. |
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Mode: BLM Dwarf Star Stereo Delay FX MK2
Width: 18HP Current: +81mA,-38mA Outputs: 1K Ohm, -5v/+5 Time CV: 68K Ohm, -5v/+5 Repeat CV: 100k Ohm, -5v/+5 Inputs: Expect -5v/+5 signals What does this do? This product uses two PT2399 Echo FX IC's to generate stereo echo processing. This particular FX chip is known to have a degraded 'flavor' in sound, when the timing is set to longer values. This new version will also allow you to dial in self oscillating feedback using the top 'Repeat' knob and 'FX' level knob. There is also a headphone monitor jack with level control knob. CV parameter: -individual Timing CV control of both channels -one input cv and single control for both 'repeating' circuits. This is basically the feedback path. -Trigger input CV for Bypassing the Wet FX. New Spread Parameter This parameter applies voltage to both delay circuits. But one voltage is inverted. This allows you to mess with both timings at the same time. There is also a level knob just for the spread parameter. Spread Knob is set too 12 o clock for 'off' position or zero volts. There is a new push button 'FX' parameter. You can use this feature in two modes: Momentary or Toggle. This parameter mutes the signal going into the Pt2399's input. So the delay trails do not get muted. This is good for live use. Nice Price! Price: $185 |
| blm-dwarf_star_stereo_delay-2020.pdf |
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Model: Buff
Active Multiple Width: 8hp Depth: 1.5 inches current: 5mA, -5mA What does this do? This module lets you repeat signals, or copy the signal. Channel 1 and 3 allow for 8 output copies. When you patch into the middle section you break the internal switch jack connection and allow for independent use of the bottom sections. Channel 2 has four outputs. Price: $80.00 |
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Model: Level Fix It
Passive Attenuators. Width 9hp Depth: 1.5 inches This is a passive attenuator modules. You get 7 channels. Price $65.00 |
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Model: Five Channel Passive Pro
Passive Attenuators. Width 12hp Depth: 1.5 inches This is a passive attenuator modules. You get 5 channels. This can also be used as a one-to-five passive splitter. There are also mute switches to turn off or cut the signal. This particular version has a fine feel to the knobs, which allows precision attenuation control. Price $68.00 Below is a diagram to help visualize the internal trace layout. 
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Module: Stereo Sir Mix Alot 2020
Stereo Synth Level Mixer Current: +37mA, -37mA width: 24hp Depth 1.5", PCB Stack Level: 1 Channels: 6, with panning on each channel. Input gain: x10, synth level optimized. Output: synth level optimized. Since there are master level knobs, one can attenuate for line levels. Link ability: Yes, with 3.5mm stereo Y-cable. There is a jack labeled 'Stereo Link' where you can patch left and right synth level input signals. What does this module do? This module allows you to connect 6 channels of synth level Euro Format signals (-5/+5v) from your vco's or percussion modules. You then can pan left or right like normal desktop mixers. The final mixdown outputs are also synth level (-5/+5v). There are two send and returns which are also synth level (-5/+5v). There is no CV control of any kind. This is a basic stereo audio mixer. |
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Module: Assist Percussive Utility MK1, RETIRED Drum utility module, percussion Current: +18mA, -18mA width:12hp Depth: 1.5" Decay Envelope Generator, HI-FI v2164 VCA, and Booster circuit. What does this do? This module gives you all the tools needed to make kick drums or percussive sounds using your own vco modules that you have lying around. There is only 3 patch points required to connect this to your VCO module. You connect (2) patch cables to your vco cv inputs, and connect the vco wave output into the ASSIST jack audio in. Think of this as a drum maker module for dummies. It makes it idiot proof for you to get 909-ish kick drums easily. The PIEZO jack input allows you to connect drum pads. The ROLAND V_DRUM pad is recommended. Product has been updated to MK2 Design. Here |
Module: Poly Phobos 4 VCO
Analog PLL, oscillator, polyphonic
Width: 24hp
Depth: Physical is 2 inches (50.8mm), clearance is 2.25 inches (57.15mm) (ribbon cable included).
Current: Ribbon Cable 1 is +92mA/-72mA, Ribbon Cable 2 is +105mA/-92mA.
Total expected power draw is: +197mA/-164mA on your system.
Oscillator Type: Saw Core generator using Phase Lock Loop (PLL) IC.
Exponential CV type: VCA v2164 Exponential converter.
Label Reference:
PCV: Pitch Control Voltage , 1v/octave input
SYNC: VCO input synchronization circuit for forced HARD SYNC
PWM: Pulse Width Modulation Input, only effects the Pulse Wave.
FM: Frequency Modulation. Linear on this product.
MOD: Modulation, Exponential on this product.
LOCK: sets mode to use the small trimmer instead of big Tune Knob.
FREE: sets mode to use the Big TUNE knob and not the small trimmer.
SELECT: refers to trigger input and used to select the wave-forms. The black tactile button is a manual selector.
What does this do?
This is a polyphonic true analog vco. There are 4 internal vco's. You get 'one set of controls' for fast, easy polyphonic patch editing.
This product can make:
-audible sound, raw continuous.
-be 1v/octave controlled and conforms to 'popular' musical note intonation.
-can do Frequency Modulation with no harsh aliasing. This is TRUE ANALOG.
-voltages to control your other modules. -5v/+5v swing.
-polyphonic Pulse Width Modulation. 4 vco possible.
-polyphonic sync control with the 4 vco's.
-detuned unison sounds by using a mixer module to monitor.
-audible 6 wave-forms at once 'switching' patches.
-there are calibration trimmers to adjust the four fine tune knobs, and there are trimmers to 'mess up the musical 1v per octave scale'.
This product does not have:
-digital memory storage or recall. No presets.
-on-board sequencing
-Voltage Control Amplifier (VCA), so that the sound stops on the outputs. The user is to have their own VCA modules.
-individual outputs jacks for each waveform of each individual vco. That would have been 24 output jacks and too much panel width. You instead get a lazy patching approach, where you use the tactile button to change wave-forms instead of un-patching and picking a wave-form.
-(does not have) lfo toggle mode. It can be tuned to go very slow with the tune knob though.
Price: $565.00 (Currently available @store page for pre-order, with nice gift).
Analog PLL, oscillator, polyphonic
Width: 24hp
Depth: Physical is 2 inches (50.8mm), clearance is 2.25 inches (57.15mm) (ribbon cable included).
Current: Ribbon Cable 1 is +92mA/-72mA, Ribbon Cable 2 is +105mA/-92mA.
Total expected power draw is: +197mA/-164mA on your system.
Oscillator Type: Saw Core generator using Phase Lock Loop (PLL) IC.
Exponential CV type: VCA v2164 Exponential converter.
Label Reference:
PCV: Pitch Control Voltage , 1v/octave input
SYNC: VCO input synchronization circuit for forced HARD SYNC
PWM: Pulse Width Modulation Input, only effects the Pulse Wave.
FM: Frequency Modulation. Linear on this product.
MOD: Modulation, Exponential on this product.
LOCK: sets mode to use the small trimmer instead of big Tune Knob.
FREE: sets mode to use the Big TUNE knob and not the small trimmer.
SELECT: refers to trigger input and used to select the wave-forms. The black tactile button is a manual selector.
What does this do?
This is a polyphonic true analog vco. There are 4 internal vco's. You get 'one set of controls' for fast, easy polyphonic patch editing.
This product can make:
-audible sound, raw continuous.
-be 1v/octave controlled and conforms to 'popular' musical note intonation.
-can do Frequency Modulation with no harsh aliasing. This is TRUE ANALOG.
-voltages to control your other modules. -5v/+5v swing.
-polyphonic Pulse Width Modulation. 4 vco possible.
-polyphonic sync control with the 4 vco's.
-detuned unison sounds by using a mixer module to monitor.
-audible 6 wave-forms at once 'switching' patches.
-there are calibration trimmers to adjust the four fine tune knobs, and there are trimmers to 'mess up the musical 1v per octave scale'.
This product does not have:
-digital memory storage or recall. No presets.
-on-board sequencing
-Voltage Control Amplifier (VCA), so that the sound stops on the outputs. The user is to have their own VCA modules.
-individual outputs jacks for each waveform of each individual vco. That would have been 24 output jacks and too much panel width. You instead get a lazy patching approach, where you use the tactile button to change wave-forms instead of un-patching and picking a wave-form.
-(does not have) lfo toggle mode. It can be tuned to go very slow with the tune knob though.
Price: $565.00 (Currently available @store page for pre-order, with nice gift).
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Module: FM Joystick Pro v3
voltage controller, lag processor Width: 12hp Depth: 32mm , 1.26 inches clearance Current: +23mA,-14mA Circuits: +/-5 volt outputs for each axis. Lag Processor and Rapid Trigger. When patched into the axis inputs, the circuit becomes an attenu-inverter. This is the 'FM' portion. This has a separate Lag Processor also. It will delay a gate, and create a lag rising slew controlled with the time knob. There is also a Rapid Trigger output, controlled by push button and rate knob. Price: $175.00 |
| blm-fm_projs-v3.pdf |
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Module: Accented Percussion Envelope Module (APE)
envelope generator, percussion, vca Width: 6hp Depth: 32mm , 1.26 inches clearance Current: +19mA, -32mA Circuits: Attack Decay Envelope Generator, and VCA's. What does this module do? This module allows you to add that dynamic 'accented' sound found in vintage gear like the Pearl SY-1 without having to build one of those kits, or hunt down the original. This module was influenced by such gear, but with modern parts. The goal was not to clone, but to get you really close results. -There is a vca on the envelope output (DEPTH) with it's own CV Level input. This Dynamic Envelope has it's own output to give external vco's a 'pitch' ability. To do Disco 'POW' for example. -There is another vca set up with CV Accent control just for the audio input. If you patch up a sequencer, you can get very close results to the DFAM envelope portion. *Gate or trigger input mode. *2 modes for envelope time: NORM, Perc (SHORT) Price: $93.00 |
