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Korg ms20m extra midi2cv

retango·korg-ms20m-extra-midi2cv·hardware/Schematic.kicad_sch

Korg ms20m extra midi2cv

About the Korg ms20m extra midi2cv PCB

Korg ms20m extra midi2cv is an open source AVR/Arduino PCB design by retango, published on GitHub under the GPL-3.0 license. It is a board, with 10 components from 9 distinct parts.

Its main chip is the Arduino Nano, from the AVR/Arduino family. Other key parts include the MCP4728 and TL071. By type, the board carries 4 connectors, 2 ICs, 2 resistors, 1 module and 1 capacitor.

It belongs with the audio designs in this gallery.

From the project

Arduino Nano Midi-to-CV internal module for the Korg MS-20M, get CV for PBend, MWheel, Vel and ATouch

Note that with this module, and maybe some minor modifications, you could also program other additions from midi, such as CV out with a different note priority (MS-20M is high note legato priority), 2nd midi note CV out, multi trigger out instead of legato, etc.

For the 3D printed part: 2x Brass Threaded Insert Knurled Nuts M2x4x3.2 (I used inserts from this kit) 1x Brass Threaded Insert Knurled Nuts M3x6x5 (see above) 2x M2, 5mm screws (used to screw the perfboard to the adapter) 2x Velcro Strips (I used Command Medium Picture Hanging Strips, one on the 3D printed part, and one inside the…

Main components on the Korg ms20m extra midi2cv

MCP4728TL071Arduino Nano

Korg ms20m extra midi2cv bill of materials (BOM)

10 components, 9 distinct parts.

QtyPartRefs
1
MCP4728
U1
1
TL071
U2
1
Arduino Nano
A1
1
PB Out (-5V~+5V)
J1
1
MW Out (0V~+5V)
J2
1
Vel Out (0V~+5V)
J3
1
AT Out (0V~+5V)
J4
1
0.1uF
C1
2
10K
R1, R2

Korg ms20m extra midi2cv design files

The KiCad project lives in the retango/korg-ms20m-extra-midi2cv repository on GitHub; these links point at the commit this page was built from.

Korg ms20m extra midi2cv: common questions

What microcontroller does the Korg ms20m extra midi2cv use?

The Korg ms20m extra midi2cv is built around the Arduino Nano, from the AVR/Arduino family.

How many components are on the Korg ms20m extra midi2cv?

10 components, from 9 distinct parts. The full bill of materials is listed on this page.

Where can I download the Korg ms20m extra midi2cv design files?

From the retango/korg-ms20m-extra-midi2cv repository on GitHub, which has the schematic; the links under Design files point to each one.

Can I use the Korg ms20m extra midi2cv design in my own project?

Yes, under the terms of its GPL-3.0 license, which retango chose for the repository.

Can I test firmware for the Korg ms20m extra midi2cv without the hardware?

Yes. HardLabs builds a simulation of the board from its netlist and BOM, so you can run and debug AVR/Arduino firmware against it before you order a PCB.

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