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midibox-seq-v4

Rendering

This repository contains some documentation and data created during the build process of a MIDIBox SEQ V4. Please note that I'm not the original author of the project. The original project is hosted at http://ucapps.de

MIDIbox PCBs

I ordered the PCBs from http://midiboxshop.bigcartel.com

Here is the list:

Parts

I ordered the parts from TME, Reichelt, DigiKey and Mouser. Sourcing the parts is a little painful. In addition, for some parts there are a few (or many) options. The following are a few notes on the parts I've chosen for the build:

Custom PCB

As I wanted to have nice backpanel as well as Ethernet support, I designed a PCB with the following additional features:

The PCB was designed in KiCad and produced by OSH Park. The PCB is available here. Feel free to order your own!

Here is the bill of materials:

Part Description Supplier
C1, C4, C5, C6, C8, C9, C10, C11, C14, C15 Ceramic Capacitor 100 nF
C2, C3 Ceramic Capacitor 18 pF
C7 Tantal Capacitor 10 uF
C12, C16 Polarized Capacitor 47 uF
C13 Polarized Capacitor 100 uF
R1 Resistor 2.32 kOhm
R2, R3, R4, R5 Resistor 49.9 Ohm
R6, R7 Resistor 220 Ohm
L1 Ferrit Bead 10 uH Reichelt
Y1 Crystal 25 MHz Reichelt
IC1 ENC28J60-I/SP DIP DigiKey
P1 USB B connector TODO
U1 3M SD-RSMT-2-MQ Mouser
U2 NMH0512SC (datasheet) Reichelt
U3 Pulse J0026D21E Mouser

Frontpanel / Case

Frontpanel

Backpanel

The frontpanel is based on the Wilba frontpanel. I only adjusted some of the drillings in addition to moving things around slightly to make sure everything fits within the case. The backpanel was designed from scratch in order to fit nicely with the MIDI I/O PCBs as well as my own PCB. In addition, a DSUB-25 connector is used for the analog bus and a few important analog outputs are available seperatly on 3.5 mm jacks. The rest of the case are just basic aluminium panels and everything is hold together by enclosure profiles. The case can be ordered from Schaeffer AG. All required files are available in the case directory.

Notes

Links

Build Images

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