The Micrón is a newly designed complete analog synthesizer voice in just 8HP! The module has a fully featured VCO with Saw/Pulse outputs, FM input and voltage controlled PWM. There is also a Sync input and Sub oscillator. The VCF is a self-oscillating low pass filter with resonance control and dedicated CV attenuator for Cutoff. Micrón features an internal envelope generator with a fixed fast attack and an adjustable release time, ranging between 80ms to 1s long. The envelope generator is normalled to both the filter cutoff and internal VCA, but normalisation can be broken by plugging a cable into either the Cutoff or VCA CV input jacks. Finally Micrón also comes equipped with a post VCF (pre-VCA) adjustable analog overdrive circuit.

BUILD GUIDE

CALIBRATION VIDEO

-VCO

• Volt per octave
• 7 octaves
• Hard Sync
• Sub oscillator
• Saw/Pulse
• PWM
• FM modulation
• Temperature Compensated Tuning

-VCF

• Self oscillating low pass filter
• Resonance control
• Cutoff CV attenuator

-E.G. & VCA

• Fast fixed attack
• Release: 80ms to 1s
• EG normaled to filter cutoff and VCA.

-DISTORTION

• Analogue overdrive

Current Draw: + 51mA / – 41mA  (+/-12v)

THIS IS A FULL DIY KIT
SERGE MODULAR FOR EURORACK – Under licence from Serge Tcherepnin

“Serge Modular” is an analogue modular synthesizer system developed by French composer and electronic designer Serge Tcherepnin in the 1970s at The California Institute of the Arts. Serge’s vision to create a “people’s synthesizers” led to a unique modular music system with an iconic design.

In collaboration with and under licence from Serge Tcherepnin, Random*Source offers a range of Serge modules, combining the original Serge circuits with the advantages of today’s technology. The modules on this page are in Eurorack (3U) format.

SERGE SEQUENCER 8 XL (SEQ8XL)

The SEQ 8 XL is a modern incarnation of Serge’s analog sequencer / programmer. The sequencer features 8 stages with 2 rows of CV outputs – A and B. There is also an A – B (A minus B) output which outputs the difference between A and B (-5 to 5V range). The ALL GATE output goes high when any button is pressed (or a stage is selected by a pulse input) and allows the use of the SEQ8 as a simple mini-keyboard. There are also individual gate outputs for each step. The length of sequences can be set via the pushbuttons while a sequence is running. The sequencer features RESET, UP/DOWN and HOLD inputs, there is also a manual switch to start / stop the sequencer. PULSE STAGE SELECT inputs allow selecting specific stages. The SEQ8XL covers a wide range of uses from sequencing / storing presets (“programming”) to wavetable-like sounds when clocked at audio rate.

Compared to previous versions of the Serge Sequencer, the R*S version features:

• Improved speed / accuracy – clean stepped waveform output up to clock frequencies of 10kHz and above.
• ALL GATE output allows the Sequencer’s pushbuttons to be used as a mini keyboard.

ALL SMD COMPONENTS ALREADY SOLDERED IN – Straightforward build of through-hole parts only

Build Document: http://randomsource.net/docs/RandomSource_Serge_SEQ8XL_Euro.pdf

Some details of the Random*Source SEQ8XL module:

• Originally designed in cooperation with Serge
• Multilayer PCB with all SMT parts soldered in
• Eurorack (3U) format, 42 HP
• skiff-friendly: < 25mm deep
• power: ~ 45mA @ +12V / 35mA @ -12V

The ADDAC214 VC Rotator is a stepped routing module for audio, CVs, gates and triggers! A typical VC switch can only switch one source to multiple destinations, or multiple sources to one destination but on the VC Rotator there is no such limitation! The same number of inputs and outputs exist, so instead of 4:1 or 1:4, this module always swaps 4 inputs to 4 outputs, and can also be patched for 2 to 2 and 3 to 3 step actions.

All four inputs get routed to the four outputs based on the CV and Clock controls. This is indicated in the following four (4) states:
1. routes all inputs to the same number output: 1:1, 2:2, 3:3, 4:4
2. routes all outputs to an offset of 1: 1:2, 2:3, 3:4, 4:1
3. routes all outputs to an offset of 2: 1:3, 2:4, 3:1, 4:2
4. routes all outputs to an offset of 3: 1:4, 2:1, 3:2, 4:3

The Direction parameter determines if the Clock input moves the rotation forward or backwards, while the Reset input resets the clock to the first step. Forward rotation can be set to 2, 3 or 4 steps by adjusting the Rotate offset knob, when moving backwards the module will always sync to 4 steps no matter where the Rotate knob is. Pendulum movements, external sequencing and other complex CV actions can be achieved using the CV input and dedicated attenuverter.

Build Document

Features:

4 Inputs
4 Outputs
Direction Switch
CV Rotate with Attenuverter
Clock and Reset Inputs
4 Monitor Leds
Specs:

Width: 6HP
50mA +12V
50mA -12V

The Brunswick is perfect for those who want an introduction into the world of patchable analogue synthesis!

The Brunswick Synthesizer from Future Sound Systems is a newly designed, affordable synth voice with plenty of connectivity for exploration and integration with other devices. The Brunswick features a single VCO (Pulse & Sawtooth), multi-mode two-pole VCF and a character filled onboard VCA. The synthesizer also features it’s own internal LFO and envelope sections alongside FM inputs for the VCO and VCF. The Brunswick features a 24-point patchbay that allows for external voltage control over VCO pitch (v/oct) and envelope gate, as well as a slew of other inputs and outputs on 3.5mm mono jacks (see below for full list).

Demos

Features

• Full Synthesizer Voice
• Pulse/Sawtooth VCO
• VCO PWM & FM
• 2-Pole VCF with FM
• Internal Triangle & Square wave LFOs
• Internal Envelope & VCA
• PLL & Phase Comparator
• 24 point Patch bay
• Power: 2x PP3 9V batteries (+35, -20mA current draw)
• Batteries not included
• Dimensions: 194 x 120 mm

Patch bay I/O:

• VCO 1V/Octave pitch control input
• VCO PulseWidth Modulation input (normalled to LFO Triangle output)
• VCO FM 1 input (normalled to LFO Triangle output)
• VCO FM 2 input (normalled to Envelope output)
• VCO “Sawtooth” output
• VCO Pulse output
• Phase Comparator input
• Phase Comparator output
• Phase Locked Loop input
• Phase Locked Loop output
• LFO Triangle output
• LFO Square output
• Low-Pass Filter input (normalled to switched VCO output)
• Band-Pass Filter input
• High-Pass Filter input
• VCF output
• VCF FM 1 input (normalled to LFO Triangle output)
• VCF FM 2 input (normalled to Envelope output)
• VCA input
• VCA output
• VCA AM 1 input (normalled to LFO Triangle output)
• VCA AM 2 input (normalled to Envelope output)
• Envelope Gate input (normalled to LFO Square output)
• Envelope output

Build Document

Muffwiggler Build Thread 

The Control Cable is a 3.5mm (1/8″) patch cable for use with Eurorack modular synthesizers. The narrow diameter barrel size was designed specifically for patching into tight narrow jack spots and a low height barrel profile designed for leaving your patches in place on a portable system that requires a closing lid, enabling your patches to stay in place during transport. Control logo embossed on the connector head.

This is a DIY kit

The kit includes:

• PCB
• Aluminium frontpanel
• all electronic parts
• Knobs and jacksockets
• Arduino
• powercable

How it works
The sound is a PWM output routed via an (optional) low-pass filter and a 100uF capacitor – so no external DAC is required. The low-pass filter on the PCB can be bypassed if you want. Bypassing the filter provides more clarity and a slightly louder output but more artifacts in the sound.

Not bored yet?
Here comes more information about the synthesis technique on the basic code and you will understand why I called this module “Grains”.
The “Grains” code provided on your module is based on FOF synthesis or formant synthesis. FOF synthesis is closely related to synchronous granular synthesis. It uses two simple triangle-shaped grains. The grains are separated by the same amount of time. With granular synthesis, the spacing within the grains radically change the texture that is created. The FOF grains have very little parameters: pitch and decay. In the basic “Grains” code the 2 decay values are fixed to most musical sounding and can not be altered via potentiometers. So only the pitch of the two grains can be altered via pots (or the cv inputs) and the overall grains repetition which provides the pitch of the output.

The code is highly customizable and I will upload user codes for the Grains as soon as I get them. (Please do share your own customized code with me via email:info@ginkosynthese.com)

PCB version 2 is shipped from 25-06-2015. There has been a change in the way cv input 3 is processed. All earlier codes can be changed to work with V2 and backwards, look for the analogRead (0) in the code and add an extra input for analogRead (3). You can play around with the way they influence each other.
For people who want to dive deeper in coding and want to write a lookup table for 1V/oct tracking, here is how: code doc.

MANUAL – http://www.ginkosynthese.com/uploads/building-manual-v2-5.pdf

SUPPORT – http://www.ginkosynthese.com/support//#grains

Interesting codes to upload in your Grains:

• Grains V1 PCB v1 (basic code for PCB v1)
• Grains V2 PCB v2 (basic code for PCB v2)
• Fresh PCB v1 (user code By Rob Bothof)
• KALLE STRAM PCB v1 (user code by Kalle Govertz H. Christensen)
• Patternrain V1 PCB v1 (user code by JGB; input 3 needs a clock input to work)
• Patternrain V2 PCB v2 (user code by JGB; input 3 needs a clock input to work)
• Grainsring V1 PCB v1 (user code by JGB; input 3 needs a clock input to work)
• Grainsring V2 PCB v2 (user code by JGB; input 3 needs a clock input to work)
• RZ-1 drums V1 PCB v1 (user code by JGB; input 2 is trigger input)
• RZ-1 drums V2 PCB v2 (user code by JGB; input 3 is trigger input)
• RZ-1 drums V2.2 PCB v2 (updated user code by JGB; input 3 is trigger input)
• Wave V1 PCB v1 (user code by JGB)
• Wave V2 PCB v2 (user code by JGB)
• Cereals V1 PCB v1 (user code by HRTL)
• Cereals V2 PCB v2 (user code by HRTL)
• Resonance-like feedback (coming soon)
• Short-wave radio-like warbles and whistles (coming soon)

The included Arduino can be updated in the standard Arduino environment. Make sure to install the driver to make sure your Arduino will be detected:
Mac OSX 32 + 64 bit
Windows 32 + 64 bit

How to upload a code in the arduino environment

How to install the driver on a MAC

The Ginko Synthese MIC is a Eurorack microphone pre-amp module in 2HP! This module was designed to sit alongside the Ginko Sampleslicer but can be used as a monophonic microphone preamp to take signals to anywhere in your modular. Your input could be microphone but could also be any other comparable monophonic signal. The MIC features an input gain control and comes with a free minijack microphone so you can start recording straight away!

The EZSQ is a simple 8 step sequencer featuring a clock input, reset input and pitch output. It was designed to sit next to the VCSQ2 to give it even more power, but 8 steps sequencers are useful anywhere in all modular cases!

Features:

• 8 Steps of adjustable CV
• Clock input
• Reset Input
• Width: 6HP

1/4″ to 1/4″ shielded TS cable. Meant to be used with instruments that use 1/4″ jacks such as guitars, pedals, mixers, etc.

Comes packed in a circular wrap style to prevent kinks. Control logo embossed on both ends. Available in Gray or Black.

3.5mm TS to 1/4″ TS cable available in four sizes and two colours.

Meant to be used to connect your modular synth or other gear that uses 3.5mm jacks to gear that uses 1/4″ jacks such as external mixers, effects, etc.

The 3.5mm head is the same connection head as Control Camo cables. Control logo embossed on the connector heads.

 

The ArduTouch is a new Arduino-compatible music synth kit. It’s fully open source – everything you need to put this together is available on the ArduTouch GitHub.

The ArduTouch is similar to the Arduino, but instead of just some headers and pins for connecting wires (boring), it also adds a PCB touch keyboard for playing notes, some extra buttons and pots so you can control sounds. The synth also features an all-important amp and speaker, so you can hear the results on just the board. (You’ll obviously want to plug into external amplification for more power and loudness.)

You don’t have to code. Just put this together, and you can start making music.

That’s already pretty cool, but the real magic comes in the form of two additional ingredients:

Software. ArduTouch has a new library that enables the synthesis capabilities of the board. This means you can also customize synth functionality (like adding additional control or modifying the sound), or create your own synths.

Tutorials. When you want to go deeper, the other side of this is a set of documentation to teach you the basics of DSP (digital signal processing) using the board and library.

In other words, what you’ve got is an all-hardware course on DSP coding, on a $30 board. And that’s just fabulous. I’ve always thought working on a low-level with hardware is a great way to get into the basics, especially for those with no previous coding background. More information on the ArduTouch library can be found here.

Build Document – ArduTouch Assembly Guide

Features

•  Easy-to-play touch keyboard, with knobs and switches for lots of tweakability
• Comes pre-programmed with an awesome synthesizer
• Easily re-program new synths with many examples available
• Arduino-compatible — free Arduino software works with MacOS, Windows, and Linux
• If you like, you can read our documentation to learn how to make sound and music and noise with computers chips!

To program your ArduTouch music synthesizer, you can use any FTDI-compatible cable

The IMP is a tonal noise generator designed to bring ethereal voices, growling drones, abrasive and tonal noise to your Eurorack format modular. How does the IMP produce such a wide palette of sounds? By placing the oscillator subservient to the noise generator.

The result is then filtered through one of eight frequency ranges, divided into two banks (‘high’ and ‘low’) of four domains. Domain four is lowest in frequency while Domain one is highest. Four is audio range, one is nearly ultrasonic. Domain one is where you will find the oddest/most ethereal noises: static, wind, the impression of voices. Within the Domain, there are two key functions: Frequency and Range.

Frequency controls the main frequency within the selected Domain – it sweeps over the entire Domain (depending on Range, see following). the fine control sweeps up to 1/5 of the size of the band that the Coarse control does.

Range controls how wide of a sweep frequency covers. Coarse and Fine control work the same for the range function as they do for frequency.

Each of these features a Width control, which controls the “width” of the band of the current Domain that the fine controls cover, hence the “up to 1/5”. In Domain one, wide open is best as the bands of sound are very narrow, so it is best to set the width all the way down to find the hidden sweet spots.

In other words, a quarter of the possible frequency range is selected by Domain, and the other controls select how much of that Domain the frequency control can sweep across. The Coarse control is for a broad sweep over the domain, and the Fine control is for finding the perfect “sweet spot”.

The resulting output is then passed through a variable low-pass filter – allowing you to control the amount of high-end madness that can ensue from working in the higher Domains!

Build Document – Assembly Guide

Note: This kit features mainly SMD components.

Technical Specifications:

• Supply Voltage: ±12V
• Supply Current: <150mA max
• Output Voltage: ±5V
• Freq. Range CV input: 0V –> +5V
• Width CV input: ±5V
• Width: 14HP

Strom Mobile is a portable power solution for music makers and everyone who needs reliable voltage source at all times! The Strom Mobile transforms the output voltage of USB power banks (5V DC) to either 9V or 12V DC to power any (music) device running on those voltages. There are two independent channels which can output individually set voltages. The Strom Mobile includes an input current feedback system to save the user from exceeding the maximum output current of the USB powerbank in use.

Features

• INPUT – Two USB connectors type B. Those are used to connect the USB power banks, one per channel.
• DC OUTPUT – Four DC connectors – two per channel. The polarity is centre negative. The connectors provide the output voltage, depending on the setting of the respective channel.
• ON/OFF SWITCH – Turns the Strom Mobile on/off. The device is turned on and powered if the LED with the ‘ON’ label is lit.
• CURRENT MONITOR – The input current of each channel is displayed by the LEDs on the front panel. The scale is divided into steps of 250mA (0,25A) starting at 0,5A with the LED right above the ‘ON’ LED. The maximum value displayed by the current monitor is an input current of 2,5A which is also the maximum output current of most power banks.
• 9/12V STATUS LED – Displays the selected output voltage per channel. A lit up LED represents an output voltage of 12V DC, while a unlit LED represents 9V DC.

Strom Mobile includes:

• 1 x Strom Mobile Power Supply
• 1 x USB B Cable
• 2 x DC Cable
• English user manual.

Please note: USB Powerbanks not included.

If you need more cables you can add the Strom Mobile Cable Pack. This features:

• 1 x USB B cable (specifically designed version, to minimize voltage drop)
• 1 x 1-to-5 daisychain DC Cable
• 2 x DC Cables
• 1 x polarity changing DC Cable (for instance to go from centre negative to positive and visa versa)

STROM Mobile User Manual

THIS IS A FULL DIY KIT

This is the latest revision PCB – All SMD components are already professionally reflow soldered in – This project requires a small amount of through-hole soldering only.

SERGE MODULAR FOR EURORACK – Under licence from Serge Tcherepnin

The Serge Divide by N Comparator (NCOM) is a rare, much sought-after and very essential Serge module covering a number of functions: comparator, voltage-controlled pulse divider, and voltage-controlled staircase generator.

The ÷N COMPARATOR consists of two sections – a comparator (right side) and a voltage-controlled pulse divider (left side). The ÷N output of the pulse divider sends out a pulse on every N-th comparator pulse where N is a number from 1 to 31. N can be (pre-)set with the divider’s control knob (1 ÷N) and can by changed with a control voltage. The VC knob (attenuator)on the bottom of the left side determines how much effect the control voltage has on “N”. In addition, the divider generates a staircase waveform with N steps. This can be used to produce whole-tone steps when run into the 1V/Oct input of a VCO or as a stepped control voltage to change for instance the cutoff of a filter.

The comparator provides a number of useful “housekeeping functions”: Logical decisions (if the +input is greater than the -input, the output will be high, otherwise low), Level detection (whenever a variable waveform crosses the theshold, a pulse is generated ), Pulse width modulation or Rectifying a waveform (e.g. a sine or triangle wave).

Now – for the first time and licenced by Serge – the NCOM is available as DIY kit for Euro.

Build Document – http://randomsource.net/docs/RandomSource_Serge_NCOM_Euro_smt.pdf

THIS IS A FULL DIY KIT
SERGE MODULAR FOR EURORACK – Under licence from Serge Tcherepnin

“Serge Modular” is an analogue modular synthesizer system developed by French composer and electronic designer Serge Tcherepnin in the 1970s at The California Institute of the Arts. Serge’s vision to create a “people’s synthesizers” led to a unique modular music system with an iconic design.

In collaboration with and under licence from Serge Tcherepnin, Random*Source offers a range of Serge modules, combining the original Serge circuits with the advantages of today’s technology. The modules on this page are in Eurorack (3U) format – modules in the classic Serge dimension (“4U” panel height) and the typical banana jacks can be found here.

THIS IS A FULL DIY KIT

It contains all components required for a complete build, right down to rack screws and power cable. We selected and used the parts as specced by Random*Source. Random Source have created a step by step build doc for this project

SERGE MODULAR FOR EURORACK – Under licence from Serge Tcherepnin

“Serge Modular” is an analogue modular synthesizer system developed by French composer and electronic designer Serge Tcherepnin in the 1970s at The California Institute of the Arts. Serge’s vision to create a “people’s synthesizers” led to a unique modular music system with an iconic design.

In collaboration with and under licence from Serge Tcherepnin, Random*Source offers a range of Serge modules, combining the original Serge circuits with the advantages of today’s technology. The modules on this page are in Eurorack (3U) format – modules in the classic Serge dimension (“4U” panel height) and the typical banana jacks can be found here.

Recommended for experienced builders only, please read the build docs before purchasing. These are DENSE builds.

Hex Mix – 6 Channel Mixer

The Hexmix System is a six channel performance mixer specially designed for Eurorack. The system has two separate modules, the core of the mixer: Hexmix that has six channels with three band EQ, mute, pan and EQ section on the master, and Hexpander that adds three auxiliary sends per channel, PFL, individual outs and a balanced output.

The design of the mixer itself is strongly inspired by classical DJ mixers, providing sharp EQ’s for enhanced performance, auxiliary sends for effects and individual outputs to record your performance per channel. The unique Mute Section is a powerful tool for performances, providing a momentary mute function controlled by vactrols – adding a smooth release to the signal decay.

Features

This is a six channel mixer with three band EQ, vactrol mutes, pan and volume control per channel. Inputs for every channel are located on the left side of the Hexmix. Each jack is normalized to a VCA Expander connection in the back, so if you have a Hexmix VCA , you will have the output of each VCA to every input. connecting a jack into any input will disconnect whatever is coming from  the normalled VCA connection.

Each Channel Strip is divided in four basic sections, that will go in the following order: Gain, Mute, EQ and Pan. Gain is set to unity, so it will act as an attenuator of the input signal. Mutes are clickless, as they are vactrol based. The circuit will provide some decay on the mutes, rather than having a sharp cut. Switches have both a latch position and  a momentary one to unmute the channel, providing some really nice performative capabilities.

EQs are quite sharp (12dB) inspired by classic DJ mixers to aggressively cut selected frequencies.

The Master section has it’s own EQ and volume control for the mix of all channels. The Master EQ is softer than the individual channel’s (6dB) and it’s meant to provide control over the final mix.

It’s possible to change output level between line level and modular with a switch located on the back of the module.
This will be pretty useful when used in combination with the hexpander, that provides a balanced out at line level. Like this its possible to have a mix at synth level to re-route the master signal while having an output to PA.

Hex Mix: Build Document – User Manual

Specifications

• Current needs: +12: 106mA, -12: 88mA, +5: 0mA
• Width: 28HP
• Depth: 27mm.
• Aluminium, heat-treated front panel

Hex Mix Hexpander

The Hexpander adds great functionality to the main Hexmix module. Featuring Three aux send with stereo returns, individual outputs for each channel, a complete PFL system and balanced master output. The Hexpander is designed to be placed above the Hexmix in a modular case – this allows every channel to be aligned as they would in traditional tabletop mixers.

Features

Auxiliary sends: For every channel you have three auxiliary sends. One pot will measure the amount of signal sent to each of them. Every auxiliary send has a volume pot, that will measure the level of the signal sent. There are two jacks available for each send – so it is possible to send the signal both pre or post fader/EQ at the same time. Returns are stereo, having a switch to select if the signal is coming from synth or line level. Like this levels can be set, for example, either for a guitar pedal or an FX module at modular level.

Monitor section: The Hexpander features a complete PFL system to send channels to to the headphones before you add them to main mix.
Flip PFL switch to send that channel to the headphones out. With the PFL/Master Pot you can crossfade between the master signal and every channel sent to PFL, The Headphones out has it’s own dedicated volume control. The Level meter will show the level of the sum of all active PFLs. When there is no PFL active, it will show master level.

Output section: Every channel has its own individual 6.35mm jack out at line level. Here you have the signal of every channel post EQ. Finally you have master balanced output.

Hexpander: Build Document – User Manual

Specifications

• Current needs: +12:90mA, -12:85mA, +5: 0mA
• Width: 28HP
• Depth: 27mm.
• Aluminium, heat-treated front panel

Hex Mix VCA

The Hex mix VCA is a compact six channel VCA, featuring an internal bus connection to interface with the rest of the Befaco Hex mixing system. The Hex VCA can act as six independent VCAs as well as a mixer, with all outputs available on the 6th channel if desired.

Every VCA has it’s own response pot for incoming CV, ranging from full Logarithmic at maximum setup, to full Exponential at minimum setup, with a Linear response when the pot is in centre position. This allows you to use a full range of unique curve responses to accentuate the VCA to your preferred application, whether it’s percussive sounds or panning effects.
Every channel also features a level pot which acts as an attenuator for the signal coming out of each VCA. The CV inputs are normalled to 10 volts, so when there is no CV signal present, the VCA will be fully open and the Level pot will act as a volume control.

Hex Mix VCA – Build Document 

Specifications

• Current needs: +12: 50mA, -12: 50mA, +5: 0mA
• Width: 14HP
• Depth: 30mm.
• Aluminium, heat-treated front panel

This project has surface mount electronics (SMD)

No Parts are provided.

The Bufftest is an extremely accurate buffered mult with a clever little circuit that lets you turn it into a cable tester at the push of a button. It can also be patched as 3x manual gates and, if you can find a use for it, 3x negative gates. Bi-colour LEDs indicate voltage.

To use as a cable tester, patch cable to be tested from any of the top outputs to the bottom input. When the test button is pressed the top LED will light green to indicate a positive voltage output, the bottom LED will indicate the state of the cable being tested. Green indicates the signal is good, red indicates the signal is broken and off indicates signal and ground are shorted.

Following user feedback from the LRMSMSLR the BuffTest has a footprint for a shrouded power header. Reverse power protection is provided by a pair of diodes.

Front panel is PCB material with black soldermask and ENIG gold lettering. Secondary labelling is printed in the copper under the soldermask so it looks embossed. Also lightning bolts.

• 13 mA +12V
• 13 mA -12V
• 0 mA 5V
• 25 mm Depth
• Ø 5.00 (1 Votes) Average Rating

Schematic, BOM and discussion of the design:

https://www.muffwiggler.com/forum/viewtopic.php?t=158717

The ADDAC305 Manual Latches is a combination of 8 manual latching switches in a small and elegant module: each button toggles between Gate high or Gate low when pressed, outputting a +5V gate signal. Additionally 4 of the 8 available latches feature inputs and can act as manual latching switches, allowing the incoming signal to pass through to the output when the button is toggled – very useful for controlling patch changes and transitions.

Note: This kit features some SMD components

F.A.Q.

Q: Are the buttons momentary? Will the module send a gate-high signal for as long as the button is held down?

A: No! The ADDAC305 uses latched/toggle switches (check the ADDAC304 if you want momentary switches instead). The module toggles between +5v and 0v depending if the button is down or up.

Q: Will the module output gates when nothing is connected at the inputs?

A: If a jack is plugged in an channel which has an input, then when the button is down the incoming signal will be output instead. If there is no input then the channel behaves like all other channels, toggling between +5v when down and 0v when up.

Specs:

• Width: 8 HP
• Depth: 2.5 cm
• Max current: 10mA
• CV inputs: ± 10v
• Gate outputs: 0 +5v

Build Document

The ADDAC304 Manual Gates features eight gate outputs (0 +5v) which are manually activated via eight dedicated pushbuttons on the frontpanel – a perfect way to perform on and control your modular system.

The ADDAC304 comes with an interesting twist: 4 out of the 8 available gates have their own input, and can act as momentary switches, outputting the signals in their respective inputs when each gate’s button is pressed.

Note: This kit features some SMD components

F.A.Q.

Q: Are the buttons momentary? Will the module send a gate-high signal for as long as the button is held down?

A: Yes! The ADDAC304 uses momentary switches (check the ADDAC305 if you want toggle switches instead). The module will output a +5v signal for as long as the button is held down, and when released it will output 0v.

Q: Will the module output gates when nothing is connected at the inputs?

A: If a jack is plugged into a channel which has an input, then when you press the button the incoming signal will be output instead. If there is no input then the channel behaves like all other channels, firing +5v when pressed and 0v when not pressed.

Specs:

• Width: 8 HP
• Depth: 2.5 cm
• Max current: 10mA
• CV inputs: ± 10v
• Gate outputs: 0 +5v

Build Document