HardLabs

Midi2gate

sebastianbeyer·SO_midi2gate

Midi2gate PCB layout, top view — open source AVR/Arduino board by sebastianbeyer
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About the Midi2gate PCB

Midi2gate is an open source AVR/Arduino PCB design by sebastianbeyer, published on GitHub. It is a 2-layer board measuring 74 × 175 mm, with 75 components from 27 distinct parts.

Its main chip is the Arduino_Nano_v3.x, from the AVR/Arduino family. Other key parts include the TL074, 6N137 and L7805. By type, the board carries 30 resistors, 15 connectors, 13 diodes, 11 capacitors, 5 ICs and 1 module.

From the project

Simple Midi to gate module with 12 gates. It's in the KOSMO format made by Look Mum No Computer (20cm high, 7.5cm wide). Gates are 5V.

Simple Midi to gate module with 12 gates. It's in the KOSMO format made by Look Mum No Computer (20cm high, 7.5cm wide). Gates are 5V.

Download the lates release including the gerber files and Arduino code

The code can be found in the code directory and requires only a midi library. Install instructions for this lib can be found in the repo.

Midi2gate, from the project README
From the project README

Main components on the Midi2gate

TL0746N137L7805Arduino_Nano_v3.x

Midi2gate bill of materials (BOM)

75 components, 27 distinct parts.

QtyPartRefs
3
TL074
U1, U4, U5
1
6N137
U2
1
L7805
U3
1
Arduino_Nano_v3.x
A1
1
MIDI IN
J1
1
Eurorack power
J2
1
GATE1
J3
1
GATE2
J4
1
GATE3
J5
1
GATE4
J6
1
MIDI OUT
J7
1
GATE5
J8
1
GATE6
J9
1
GATE7
J10
1
GATE8
J11
1
GATE9
J12
1
GATE10
J13
1
GATE11
J14
1
GATE12
J15
1
1N4148
D1
Show 7 more
QtyPartRefs
12
LED
D2, D3, D4, D5, D6, D7, D8, D9 +4
3
10u
C1, C2, C5
8
100n
C3, C4, C6, C7, C8, C9, C10, C11
3
220
R1, R13, R14
2
10R
R2, R3
24
1k
R4, R5, R6, R7, R8, R9, R10, R11 +16
1
10k
R12

Midi2gate design files

The KiCad project lives in the sebastianbeyer/SO_midi2gate repository on GitHub; these links point at the commit this page was built from.

Midi2gate: common questions

What microcontroller does the Midi2gate use?

The Midi2gate is built around the Arduino_Nano_v3.x, from the AVR/Arduino family.

How big is the Midi2gate PCB?

The Midi2gate measures 74 × 175 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the Midi2gate?

75 components, from 27 distinct parts. The full bill of materials is listed on this page.

Where can I download the Midi2gate design files?

From the sebastianbeyer/SO_midi2gate repository on GitHub, which has the KiCad layout; the links under Design files point to each one.

Can I use the Midi2gate design in my own project?

The repository has no license, so all rights stay with sebastianbeyer. Use it as a reference, and ask the author before reusing the design.

Can I test firmware for the Midi2gate 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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