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PolyKit-DUO-polyphonic-synthesizer
Moog-Source-clone
Moog Source based mono synth with MIDI and USB16bit-MIDI-to-CV-polyphonic-converter
6 note Polyphonic 16 bit MIDI to CVPolyphonic-6-note-MIDI-to-CV
I needed a 6 note poly controller for a new hardware synth I was building and this is itPsylotron---Mellotron-clone
Arduino and wav trigger based Mellotron cloneDual-VCDCO-monosynth
A monosynth based on the Hagiwo $9 VCO and the AS3372 Matrix 12 filterSeeed-RP2040-dual-DCO
A single voice dual DCO with the Seeed XIAO RP2040FV-1-programmable-multi-effect
PolyKit-16
New version of the Polykit DUO polysynth with 2x 8 voice synthsPoly-Zero-8-voice-Polysynth
Based on the Hagiwo $9 DCO and the Polykit 16 filter cardsRoland-A110-style-MIDI-note-display
A MIDI note analyzer in the style of the Roland A110 Midi device, accepts USB Host, USB MIDI and MIDI DIN inputs and displays the notes.Pico-DCO-DAC
A secondary board to compliment the Pico DCO board by Polykit14bit-MIDI-to-CV
Teensy PWM based MIDI to CV converter with 20 channels of CV and 8 triggersMIDI-to-CV-MCP4922
MIDI to CV using MCP4922 dual DACs, with CV, velocity, PB, Mod and aftertouchMFOS-16-Stage-programmable-Phaser
An update of the MFOS 8 Stage phaser to 16 stages plus a programmer interface to store patches and MIDIHagiwo-Drum-Sample-playback-with-MIDI
Modified version of the Hagiwo Drum Sample playback module3x3-Midi-Merge-Arduino-Mega
Borrowed from Sandy Sims, this is a take on her 3 way mergeMIDI-Master-Clock
MIDI Master clock and PPQ outputs with SSD1306 displayMIDI-Analyzer
Hardware MIDI analyzerXVA1-hardware-editor
A copy of the physical XVA1 hardware editor by MacMannesSeeed-RP2040-MIDI-interface
Minipops-expanded
Polyphonic-MIDI-keyboard-to-CV
Convert an old MIDI keyboard to polyphonic CV with gate, triggers, velocity, bend and mod wheel.Hagiwo-9-DCO-mods
Hagiwo $9 DCO under MIDI control with added glide and pitchbendPico-MIDI-to-HID
Receives MIDI CC messages and outputs ascii values over USBHagiwo-Drum-Sample-Playback-RP2040-and-DAC
MIDI-to-CV-with-channel-change
A copy of the Elkyam MIDI to CV converter with fixes to the code for bottom note and MIDI channel changeHagiwo-Drum-Sample-Playback-controller
Programmer section for 16 Hagiwo Drum sample ModulesPico-DCO-used-in-builds
A collection of my PICO DCO builds in one placeA_Bit_More
A tribute to the classic bit series of synths with DCO's based on the same counter technologyRoland-MKS-30-OLED-upgrade-MK-II
MIDI-to-CV-with-aftertouch
Based on my earlier MIDI to CV clone of the Elkyam MIDI to CV, someone asked for Channel Afterouch.XVA1-dual-synth-hardware-editor
A modified version of the XVA1 Hardware editor to control 2 modules5x5-Midi-Merge-with-USB-host
Based on the Sandy Sims 3x3 MIDI Merge this has been expanded to a 5x5 mergeKorg-DW6000-editor
A built in sysex editor for the Korg DW6000 wavetable synthesizerCS80-syle-ribbon-controller
I have built an Arturia CS80 editor and needed a ribbon controller to go with it.MS-x-Monotron-expansion
An expansion of the Korg Monotron with EG's, noise source, CV & MIDISynth-add-on-programmer
Running out of room on your front panel? then add hidden functions with this handy programmerWaveshare-AD9833-DCO
Create a stable DCO with an AD9833 using MIDI messages for controlPoly61-rack-conversion-code-etc
These two Arduino Nano schematics and code were used in my Poly61 conversion to a rack mount.ST7789-multiple-displays
An AX80 style display to show synthesizer parameters, currently being used for the "A bit More" synthesizerLove Open Source and this site? Check out how you can help us