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OpenA3XX MCDU

OpenA3XX·opena3xx.schematics·opena3xx-mcdu/kicad/opena3xx-mcdu/opena3xx-mcdu.kicad_pcb

OpenA3XX MCDU PCB layout, top view — open source Raspberry Pi board by OpenA3XX

About the OpenA3XX MCDU PCB

OpenA3XX MCDU is an open source Raspberry Pi PCB design by OpenA3XX, published on GitHub under the GPL-3.0 license. It is a 2-layer board measuring 148 × 225 mm, with 152 components from 24 distinct parts.

Its main chip is the PinHeader_2x20_P2.54mm_Vertical, from the Raspberry Pi family. Other key parts include the MCP23017_SO. By type, the board carries 75 switches, 47 resistors, 11 diodes, 9 connectors, 5 ICs and 5 capacitors.

From the project

An OPENA3XX repository to store all hardware schematics and pcb designs.

OpenA3XX MCDU, from the project README
From the project README

Main components on the OpenA3XX MCDU

MCP23017_SO

OpenA3XX MCDU bill of materials (BOM)

152 components, 24 distinct parts — part numbers from the project's BOM.

QtyPartRefs
5
MCP23017_SO
U1, U2, U3, U4, U5
8
Conn_02x01
J1, J2, J3, J4, J6, J7, J8, J9
1
Conn_02x01
J5
74
TLL-6A
SW1, SW2, SW3, SW4, SW5, SW6, SW7, SW8 +66
1
SW_MEC_5E
SW100
1
GREEN LED
D1
1
YELLOW LED
D2
1
RED LED
D3
1
ORANGE LED
D4
1
FM1 - Amber LED
D5
1
FM2 - Amber LED
D6
1
IND- Amber LED
D7
1
RDY - Green LED
D8
1
FAIL - Amber LED
D9
1
MCDU MENU - WHITE LED
D10
1
FM - White LED
D11
5
100n
C1, C2, C3, C4, C5
11
470R
R1, R2, R3, R4, R37, R38, R39, R40 +3
5
10K
10k
R5, R6, R7, R8, R9
3
2.2K
2.2k
R10, R11, R12
Show 4 more
QtyPartRefs
25
220R
R13, R14, R15, R16, R17, R18, R19, R20 +17
1
470R
R36
1
22.0K
R45
1
10.0K
R46

OpenA3XX MCDU design files

The KiCad project lives in the OpenA3XX/opena3xx.schematics repository on GitHub; these links point at the commit this page was built from.

OpenA3XX MCDU: common questions

What microcontroller does the OpenA3XX MCDU use?

The OpenA3XX MCDU is built around the PinHeader_2x20_P2.54mm_Vertical, from the Raspberry Pi family.

How big is the OpenA3XX MCDU PCB?

The OpenA3XX MCDU measures 148 × 225 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the OpenA3XX MCDU?

152 components, from 24 distinct parts, with part numbers taken from the project's own BOM. The full bill of materials is listed on this page.

Where can I download the OpenA3XX MCDU design files?

From the OpenA3XX/opena3xx.schematics repository on GitHub, which has the KiCad layout, the schematic and the BOM; the links under Design files point to each one.

Can I use the OpenA3XX MCDU design in my own project?

Yes, under the terms of its GPL-3.0 license, which OpenA3XX chose for the repository.

Can I test firmware for the OpenA3XX MCDU without the hardware?

Yes. HardLabs builds a simulation of the board from its netlist and BOM, so you can run and debug Raspberry Pi firmware against it before you order a PCB.

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