HardLabs

Rpi managed switch-4-port

AlbrechtL·rpi-managed-switch-4-port·RPI_4_Port_Switch/RPI_4_Port_Switch.kicad_pcb

Rpi managed switch-4-port PCB layout, top view — open source Raspberry Pi board by AlbrechtL

About the Rpi managed switch-4-port PCB

Rpi managed switch-4-port is an open source Raspberry Pi PCB design by AlbrechtL, published on GitHub under the GPL-3.0 license. It is a 4-layer board measuring 85 × 90.4 mm, with 128 components from 33 distinct parts.

Its main chip is the SSW-120-01-T-D-006, from the Raspberry Pi family. Other key parts include the ENC28J60-I/SO, TPS562231 and RTL8367S. By type, the board carries 54 resistors, 42 capacitors, 6 connectors, 4 ICs, 3 diodes and 3 inductors.

From the project

An open-source Raspberry Pi 4-port gigabit managed switch

An open-source 4-port gigabit managed switch HAT based on a Raspberry Pi with OpenWrt support.

Disclaimer: This is an ongoing project where some features are not working, and some hardware bugs may exist.

The hardware works with a adapted OpenWrt: https://github.com/AlbrechtL/openwrt/tree/rpimanagedswitch

I added the following to OpenWrt: Device tree overlays for DSA Enabled the ENC28J60 driver Added a small patch to enable the ENC28J60 for DSA Added detection of DSA in the first boot scripts so that OpenWrt uses the switch

Rpi managed switch-4-port, from the project README
From the project README

Main components on the Rpi managed switch-4-port

ENC28J60-I/SOTPS562231RTL8367S

Rpi managed switch-4-port bill of materials (BOM)

128 components, 33 distinct parts — part numbers from the project's BOM.

QtyPartRefs
1
ENC28J60-I/SO
U1
2
TPS562231
U2, U3
1
RTL8367S
U4
2
25MHZ
25Mhz
Y1, Y2
1
SSW-120-01-T-D-006
Raspberry_Pi_2_3
J1
1
CONN_01X02
Conn_01x02
J2
4
8P8C_LED
J3, J4, J5, J6
8
MountingHole
H1, H2, H3, H4, H5, H6, H7, H8
1
Ground point
TP3
5
G2406S
TR1, TR2, TR3, TR4, TR5
1
C2296
Yellow
D1
1
C2297
Green
D2
1
C2286
Red
D3
1
C1015
Ferrite Beads
L1
2
1.5UH
1.5uH
L2, L3
22
100NF
100nF
C1, C4, C5, C6, C7, C9, C10, C11 +14
4
18PF
18pF
C2, C3, C30, C32
5
10UF
10uF
C8, C13, C14, C15, C16
5
1NF
1nF
C12, C39, C40, C41, C42
6
22UF
22uF
C19, C20, C21, C22, C23, C24
Show 13 more
QtyPartRefs
4
10K
10k
R1, R2, R17, R20
4
470
R3, R4, R21, R28
2
2k
R5, R27
1
330
R6
4
49.9
R7, R8, R9, R10
20
75
R11, R12, R13, R14, R38, R39, R40, R41 +12
1
3.3K
3.3k
R15
1
4.99K
4.99k
R16
1
6.2K
6.2k
R18
1
39K
39k
R19
13
4.7K
4.7k
R22, R23, R24, R26, R29, R30, R31, R32 +5
1
1k
R25
1
4.7k
R54

Rpi managed switch-4-port design files

The KiCad project lives in the AlbrechtL/rpi-managed-switch-4-port repository on GitHub; these links point at the commit this page was built from.

Rpi managed switch-4-port: common questions

What microcontroller does the Rpi managed switch-4-port use?

The Rpi managed switch-4-port is built around the SSW-120-01-T-D-006, from the Raspberry Pi family.

How big is the Rpi managed switch-4-port PCB?

The Rpi managed switch-4-port measures 85 × 90.4 mm, has 4 copper layers and is 1.6 mm thick.

How many components are on the Rpi managed switch-4-port?

128 components, from 33 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 Rpi managed switch-4-port design files?

From the AlbrechtL/rpi-managed-switch-4-port 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 Rpi managed switch-4-port design in my own project?

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

Can I test firmware for the Rpi managed switch-4-port 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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