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MidiBox3 old

Dethernal·Midibox3·midiBox3/midiBox3_old.kicad_pcb

MidiBox3 old PCB layout, top view — open source board by Dethernal

About the MidiBox3 old PCB

MidiBox3 old is an open source PCB design by Dethernal, published on GitHub under the MIT license. It is a 2-layer board measuring 100 × 100 mm, with 49 components from 30 distinct parts.

Other key parts include the PC817, MM74HCT00M, JTE0624D12 and LM7805_TO220. By type, the board carries 22 capacitors, 7 resistors, 5 connectors, 5 diodes, 4 ICs and 4 inductors.

It belongs with the audio designs in this gallery.

From the project

New features for DIN5 MIDI → Waweblaster interface board. Now with MT-32 stuff.

My attempt to make new Waveblaster-compatible interface board.

Work with all current loop MIDI source Additional Note On volume control with rotary encoder * Can work without microcontroller as simple interface board but other features will gone.

Measure power consumption. What maximum current on +5V line is? Do I really need output filter and what parameters it must have? So, I need to characterize all imortant parameters.

Main components on the MidiBox3 old

PC817MM74HCT00MJTE0624D12LM7805_TO220

MidiBox3 old bill of materials (BOM)

49 components, 30 distinct parts.

QtyPartRefs
1
PC817
U1
1
MM74HCT00M
U2
1
JTE0624D12
U3
1
LM7805_TO220
U4
1
Barrel_Jack_Switch
J1
1
MIDI IN
J2
1
Conn_02x13_Odd_Even
J3
1
MIDI THRU
J4
1
Conn_Coaxial_x2
J5
1
R_POT_Dual
RV1
1
SW_DIP_x01
SW1
1
1N4148
D1
1
DB104
D2
2
PESD5V0S1BA
D3, D4
1
LED
D5
2
100nH
L1, L2
2
33nH
L3, L4
4
220uF
C1, C8, C14, C15
5
1uF
C2, C3, C13, C17, C18
2
47pF
C4, C5
Show 10 more
QtyPartRefs
2
15pF
C6, C7
2
47uF
C9, C10
2
1uF
C11, C12
1
10uF
C16
4
100pF
C19, C20, C21, C22
2
220R
R1, R3
1
4.7K
R2
1
10K
R4
2
0R
R5, R7
1
470R
R6

MidiBox3 old design files

The KiCad project lives in the Dethernal/Midibox3 repository on GitHub; these links point at the commit this page was built from.

MidiBox3 old: common questions

How big is the MidiBox3 old PCB?

The MidiBox3 old measures 100 × 100 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the MidiBox3 old?

49 components, from 30 distinct parts. The full bill of materials is listed on this page.

Where can I download the MidiBox3 old design files?

From the Dethernal/Midibox3 repository on GitHub, which has the KiCad layout; the links under Design files point to each one.

Can I use the MidiBox3 old design in my own project?

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

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