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Midikraken DIN board

Windfisch·midikraken·hardware/din5_pcb/din5_pcb.kicad_pcb

Midikraken DIN board layout, top view — open source board by Windfisch

About the Midikraken DIN board

Midikraken DIN board is an open source PCB design by Windfisch, published on GitHub. It is a 2-layer board measuring 56 × 110 mm, with 66 components from 19 distinct parts.

Other key parts include the 74HCT245, 74HC595, 74HC165, HCPL-2630 and BluePill. By type, the board carries 25 resistors, 24 connectors, 8 diodes, 5 ICs, 2 capacitors and 1 module.

It belongs with the audio designs in this gallery.

From the project

A open source, open hardware up-to-16x USB-MIDI-interface for around 15 bucks in its smallest configuration.

This page describes the hardware itself. A build manual is available here.

Midikraken boards are meant to be stacked using M3 spacers and screws. In such a setup, one "master" exists that holds the microcontroller with the USB port, and zero or multiple "slaves" are daisy-chained with their upstream ("from master") or downstream ("to slave") ports.

The photo shows an (almost) fully equipped Midikraken including:

Midikraken DIN board, from the project README
From the project README

Main components on the Midikraken DIN board

74HCT24574HC59574HC165HCPL-2630BluePill

Midikraken DIN board bill of materials (BOM)

66 components, 19 distinct parts.

QtyPartRefs
1
74HCT245
U1
1
74HC595
U2
1
74HC165
U3
2
HCPL-2630
U101, U102
1
BluePill
A1
1
Conn_01x03_Male
J1
2
Conn_02x03_Odd_Even
J2, J3
2
USB_B_Micro
J4, J5
2
Conn_02x02_Odd_Even
J6, J7
1
Conn_01x07
J8
8
DIN-5_180degree
J101, J102, J103, J104, J201, J202, J203, J204
8
do not equip
J111, J112, J113, J114, J211, J212, J213, J214
1
Rotary_Encoder_Switch
SW1
4
LED
D101, D102, D103, D104
4
yellow
D201, D202, D203, D204
2
100n
C101, C102
1
R
R1
16
220
R101, R102, R103, R104, R107, R108, R111, R112 +8
8
1k
R105, R106, R109, R110, R201, R202, R203, R204

Midikraken DIN board design files

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

Midikraken DIN board: common questions

How big is the Midikraken DIN board?

The Midikraken DIN board measures 56 × 110 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the Midikraken DIN board?

66 components, from 19 distinct parts. The full bill of materials is listed on this page.

Where can I download the Midikraken DIN board design files?

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

Can I use the Midikraken DIN board design in my own project?

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

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