MIDI 5V I/O circuit

6r1d·enhancing_boards·MIDI_IO/MIDI_IO.kicad_pcb

MIDI 5V I/O circuit PCB layout, top view — open source board by 6r1d

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About the MIDI 5V I/O circuit PCB

MIDI 5V I/O circuit is an open source PCB design by 6r1d, published on GitHub under the MIT license. It is a 2-layer board measuring 50 × 40 mm, with 18 components from 9 distinct parts.

Other key parts include the 6N138. By type, the board carries 5 resistors, 4 inductors, 3 diodes, 2 capacitors, 1 IC and 1 connector.

It belongs with the audio, test & measurement and dev boards & breakouts designs in this gallery.

From the project

My place to store and improve KiCad boards and schematics

I have five physical boards and each of those is working. Moreover, long-term tests are done. I'm still concerned about the device speed and I want to perform 24 hour long tests on 5V and 3.3V devices, as well.

This board has two DIN-5 ports for input and output and 6N138 to isolate input signal. 6N138 optoisolators were bought here and were tested by me well. I've bought my DIN-5 sockets here on AliExpress, which seems cheap enough.

MIDI 5V I/O circuit, from the project README — From the project README

Main components on the MIDI 5V I/O circuit

MIDI 5V I/O circuit bill of materials (BOM)

18 components, 9 distinct parts.

Qty	Part	Footprint	Refs
1	6N138	DIP-8_W7.62mm	U1
1	Conn_01x04	Molex_KK-254_AE-6410-04A_1x04_P2.54mm_Vertical	J1
2	DIN-5_180degree_JS	din-5-shielded	J_IN_1, J_OUT_1
1	1N914	D_1206_3216Metric_Pad1.42x1.75mm_HandSolder	D1
2	D	D_0603_1608Metric	D2, D3
4	1k 100mHz	L_0603_1608Metric	FB1, FB2, FB3, FB4
2	0.1uF	C_0603_1608Metric	C1, C2
4	220	R_0603_1608Metric	R1, R2, R3, R4
1	4.7k	R_0603_1608Metric	R5

MIDI 5V I/O circuit design files

The KiCad project lives in the 6r1d/enhancing_boards repository on GitHub; these links point at the commit this page was built from.

LayoutMIDI_IO/MIDI_IO.kicad_pcb

MIDI 5V I/O circuit: common questions

How big is the MIDI 5V I/O circuit PCB?

The MIDI 5V I/O circuit measures 50 × 40 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the MIDI 5V I/O circuit?

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

Where can I download the MIDI 5V I/O circuit design files?

From the 6r1d/enhancing_boards repository on GitHub, which has the KiCad layout; the links under Design files point to each one.

Can I use the MIDI 5V I/O circuit design in my own project?

Yes, under the terms of its MIT license, which 6r1d chose for the repository.

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