"A new DIY synthesizer module design. This lets you use a keyboard, sequencer or other MIDI controller with your modular synth. Two sets of CV/Gate/Trigger outputs with keyboard split, multiple note priority sets, bend inhibit and midi clock output."
"This is a two voice Midi to CV converter module. It has a keyboard split option allowing you to separate the keyboard into two separate synth voices, tune mode, multiple sets of note priorities for when more than two notes are played at the same time, options for inhibiting note bend on an individual output and output for the MIDI clock.
The PCB is set up for attached 3.5mm jacks and a detached MIDI input jack. If someone wanted to adapt it to a +/-15V system, no parts changes would be required."
"This module is composed of two Sallen-Key low pass filters designed to be used on very low frequencies. When pitch control voltages are processed through this, it creates a portamento which then turns into vibrato. Depending on resonance control, this vibrato can die out almost immediately or go on for the duration of the note. When used with envelope generators, this module can be used to add extra "bumpiness" to an envelope signal allowing for more harmonic content. With a gate signal, the module can be used as a simple envelope generator with equal sloped attack and release.
This design can be used with +/-15V systems without modification"
via Barton Musical Circuits
"This module is composed of two voltage controlled comparators which are gate outputs that turn on when an input voltage exceeds a threshold voltage. Four additional gate outputs turn off and on depending on the relative outputs of the comparators. This was initially designed as a way to add soft-sync features to VCOs that only have hard-sync, but has also been useful for turning envelope generators into gated loops
This design can be used with +/-15V systems with a few resistor value changes."
"This module is a 12-stage phaser or all-pass filter with resonance control. When the filter’s output is mixed with the input, this creates notches in the frequency response. Classic phasing sounds are achieved by modulating the frequency control with an LFO. It can also be used as a 4-stage filter by removing the top PCB and jumpering pins 1 and 2 of the pin connectors together.
This module uses two circuit boards sandwhiched together. It's designed for 12V systems and can be easily modified for use with 15V systems."
"This is four LFOs in one module to effeciently add more up and down to patches. Each LFO has a range of 0.04 to 55hz and triangle/square output waveforms.
This module is designed for 12V systems but can be used with 15V systems by adjusting 8 resistor values."
BMC093 Diode Shaper VCA Demovideo upload by boogdish
"Demonstration/Overview of a new synthesizer module design.
I provide PCBs/Panels for DIY builders and also sell pre-built modules on my site. Visit https://www.bartonmusicalcircuits.com... to get more information on this module.
PCBs and fully built modules can be ordered from: https://bartonmusicalcircuits.com/sho..."
This module is a VCA that uses rectified feedback/feedforward to provide waveshaping. Both the feedback/forward knobs can provide positive or negative feedback and the external CV control is an attenuverter. It also includes switchable Zener diode limiters to soften the output when large amounts of positive feedback are used. The module is DC coupled, so it can be used with LFOs, Envelopes and CV sources as well waveforms. The DC coupling also allows for DC offset to be applied to the input which increases harmonic possibilities.
This module is designed for 12V systems, but works with 15V systems with just one resistor change. The documentation gives tips on how to tweak or modify the circuit.
BMC092. Sample Release Demo video upload by boogdish
"This is a demo/overview of a new synthesizer module design. More information (schematics, ordering, etc) can be found at bartonmusicalcircuits.com/samplerelease/"
The Sample Release is a 4 channel bipolar envelope generator module that can also act as a sample-and-hold or track-and-hold. Each channel takes a voltage input, samples it and then that voltage goes to zero volts with it's rate controlled by the release knob. This generates control envelopes that fall when positive voltage inputs are applied and rise when negative voltage inputs are applied.
Each channel has a toggle that disables the release function and lets the channel act as a traditional sample-and-hold or track-and-hold. Additionally, a +5V supply is normalized to the voltage input so the module can also be used as a normal release generator
"This is a demo for a new DIY synthesizer module I designed. If you're interested in building this, you can find ordering information, a documentation PDF and a front panel drill guide at http://www.bartonmusicalcircuits.com/..."
"Utility Buttons is a performance/controller module that provides gate/trigger outputs based on button presses. Buttons can be set to act as momentary, latching or tap tempo. Each channel has two outputs, one of which can be configured as a Multiple, inversion or trigger of the other output.
This module works on either 12V or 15V systems with no modification. The switches are mounted to the PCB to minimize wiring, but jacks are offboard so it can be easily used in multiple synthesizer formats. Outputs are +5V."
"This is a specialized module for controlling 1V/Octave oscillators and filters. A single CV input is offset and quantized to create 4 voice chords. Chord voicings can be saved and loaded using external CV. It also features a single slew control for all four outputs, random chord selection and more
The board features PC mounted pots for less wiring, and mounting holes for flexibility in panel layout. There are Eurorack and MOTM power connecters. It's compatible with 12V or 15V synth systems without any parts substitutions"
"This module is a specialized VCA that can act as a Four-Quadrant Multiplier (sometimes referred to as a 'Ring Mod') or as a panner.
The board features PC mounted pots for less wiring, and mounting holes for flexibility in panel layout. There are Eurorack and MOTM power connecters. It's compatible with 12V or 15V synth systems without any parts substitutions"
"This module is a controller that uses a large knob to control pitch and a button to generate triggers and gates. It features internal Sample/Hold and Slew circuits. The PCB has MOTM and Eurorack style power connecters. The jacks are the only panel parts not PCB-Mounted making for easy wiring while being flexible for use in different synth formats. There are also mounting holes for using offboard pots/switches."
"This module is a PIC-based rhythm generator inspired by old rhythm boxes and keyboard presets. Kick and Snare patterns are selected using the knobs. It features an internal clock but is compatible with an external clock. There are CV and trigger inputs for pattern selection allowing for an external sequencer to be used. It features Eurorack and MOTM style power connecters and can be used on either 12V or 15V systems without modification."
"This is a single channel version of the BMC27 Random Rhythm module. It's a trimmed down, easier to use version that adds SAVE/LOAD functionality.
The board features PC mounted pots and LEDs, for less wiring and also mounting holes for flexibility. There are Eurorack and MOTM power connecters. It can be built in +/-12V or +/-15V systems without any modifications."
"This is a DC coupled, four channel attenuverting mixer. It is expandable to eight channels.
The board features PC mounted pots, for less wiring and also mounting holes for flexibility. There are Eurorack and MOTM power connecters. It can be built in +/-12V or +/-15V systems without any modifications."
"This is a demo for a new DIY synthesizer module. If you're interested in building it for yourself, more information is available at http://www.bartonmusicalcircuits.com/4xd/"
"This is a demo for DIY synthesizer module. If you're interested in building it for yourself, there's more information at http://www.bartonmusicalcircuits.com/..."
"This is an analog module that allows for uniform detuning and offseting of control voltages. It has a CV input and an offset input. It has outputs for the offset being applied positively, negatively and double offset applied positively and negatively. When used without the CV input, it can be used as a standalone inverter or fixed gain amplifier."
"This is a demo video for a DIY synthesizer module. If you're interested in building this, I have PCBs and microcontrollers available for it on my site: http://www.bartonmusicalcircuits.com/..."
"This is a Boolean logic module. It has two channels each with two inputs and gate outputs. The logic function of each channel is selected by the position of the potentiometer. The logical operations available are AND, NAND, OR, NOR, XOR, XNOR."
"This is a demo for a new DIY synthesizer module design. If you're interested in building it for yourself, there are PCBs and PICs available at http://www.bartonmusicalcircuits.com/..."
"This is a step sequencer module. It has an internal clock with it's own output as well as two programmable output channels. It has EEPROM save/load function (saves patterns after powering down), and a range of 2 to 32 steps. LEDs, Pots, and Switches are all mounted to the PCB to minimize wiring while allowing for 1/4" and 1/8" jacks to be used with the same PCB."
"This is a DIY synthesizer module demo. If you're interested in building this for yourself, PCBs and preburnt microcontrollers are available at http://www.bartonmusicalcircuits.com/..."
"This is a demo for BMC36 Digital Hi Hat. This is a PIC based DIY synthesizer module. If you're building a synthesizer system and would like to build one of these for yourself, please visit http://www.bartonmusicalcircuits.com/..."
"This is a PIC based percussion module which is loosely modeled on the hi-hat. It features seperate Decay and Pitch controls for Open/Close modes and a master Shape control which mixes between a linear or logarithmic decay. This module is also compatable with the BMC003X Expander for using external CV for all of it's parameters."
