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MIDI I/O Breakout Board

supports DIN and TRS connectors

LABSPROJECT
Based on a Labs project | January 2019 | Find it here
MIDI I/O Breakout Board
In the beginning of 2019, some 35 years after its introduction, version 2.0 of the Musical Instrument Digital Interface, better known as MIDI, was announced. MIDI 2.0 introduces many new features, two of them being two new connectors. This means that it is time for a new universal MIDI interface breakout board.
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A universal MIDI interface breakout board supporting DIN and TRS-type connectors that can be configured as Input, Output and MIDI Thru.
Component list

Component List

Illustration 190070-004

 

There are three (3) component lists (but only one type of heading)

 

MIDI In

Resistors

All SMD 0805

R1 = 220Ω

R2 = 1kΩ

R5* = 0Ω

 

Capacitors

All SMD 0805

C1,C2,C3 = 100nF

 

Inductors

All SMD 0805

L1,L2 = ferrite bead, 1kΩ @ 100MHz

 

Semiconductors

D1 = BAT54

IC1 = H11L1 or equivalent

 

Miscellaneous

K1* = 5-way DIN socket, 180° style

K2* = 3-way TRS socket, 3.5mm diameter

K3* = 3-way TRS socket, 2.5mm diameter

K4 = 3-pin pinheader, 0.1'' pitch

PCB # 190070-1 from Elektor Store

 

MIDI Out / MIDI Thru, 5 V

Resistors

All SMD 0805

R1,R4 = 220Ω

R3,R5* = 0Ω

 

Capacitors

All SMD 0805

C1,C2 = 0Ω*

C3 = 100nF

 

Inductors

All SMD 0805

L1,L2 = ferrite bead 1kΩ @ 100MHz

 

Miscellaneous

K1* = 5-way DIN socket, 180° style

K2* = 3-way TRS socket, 3.5mm diameter

K3* = 3-way TRS socket, 2.5mm diameter

K4 = 3-pin pinheader, 0.1'' pitch

PCB # 190070-1, from Elektor Store

 

MIDI Out / MIDI Thru, 3.3 V

Resistors

All SMD 0805

R1 = 33Ω, 0.5W

R3,R5* = 0Ω

R4 = 10Ω, 0.25W

 

Capacitors

All SMD 0805

C1,C2 = 0Ω*

C3 = 100nF

 

Inductors

All SMD 0805

L1,L2 = ferrite bead 1kΩ @ 100MHz

 

Miscellaneous

K1* = 5-way DIN socket, 180° style

K2* = 3-way TRS socket, 3.5mm diameter

K3* = 3-way TRS socket, 2.5mm diameter

K4 = 3-pin pinheader, 0.1'' pitch

PCB # 190070-1, from Elektor Store

 

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