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Scsi switcher

akuker·hw_projects·scsi_switcher/scsi_switcher.kicad_pcb

Scsi switcher PCB layout, top view — open source RP2040/RP2350 board by akuker
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About the Scsi switcher PCB

Scsi switcher is an open source RP2040/RP2350 PCB design by akuker, published on GitHub under the BSD-3-Clause license. It is a 4-layer board measuring 160 × 100 mm, with 75 components from 28 distinct parts.

Its main chip is the Pico, from the RP2040/RP2350 family. Other key parts include the C111293, CH340N and CD4052B. By type, the board carries 14 ICs, 14 resistors, 13 capacitors, 11 connectors, 9 jumpers and 4 switches.

Main components on the Scsi switcher

PicoC111293CH340NCD4052B

Scsi switcher bill of materials (BOM)

75 components, 28 distinct parts — part numbers from the project's BOM.

QtyPartRefs
1
Pico
U1
1
C111293
CD4052B
U2
1
CH340N
CD4052B
U3
11
CD4052B
U4, U5, U6, U7, U8, U9, U10, U11 +3
3
BSS138
Q1, Q2, Q3
1
Conn_02x25_Counter_Clockwise
J1
1
Conn_02x25_Counter_Clockwise
J2
1
Conn_02x06_Odd_Even
J3
1
U254-051N-4BH806
Conn_02x06_Odd_Even
J4
1
C2346
Conn_02x25_Counter_Clockwise
J5
4
Conn_02x25_Counter_Clockwise
J6, J7, J8, J10
1
Conn_02x08_Odd_Even
J9
1
Conn_02x04_Odd_Even
J11
1
SolderJumper_3_Open
JP1
6
SolderJumper_3_Open
JP2, JP3, JP4, JP5, JP6, JP7
2
SolderJumper_2_Bridged
JP8, JP9
1
SELECT 0
SW1
1
SELECT 1
SW2
1
SELECT 2
SW3
1
SELECT 3
SW4
Show 8 more
QtyPartRefs
3
TestPoint_Small
TP1, TP2, TP3
1
Green
D1
3
C2286
Green
D2, D3, D4
8
100nF
C1, C7, C8, C9, C10, C11, C12, C13
4
100N
100nF
C2, C3, C4, C5
1
10U
100nF
C6
13
10k
R1, R2, R3, R5, R6, R7, R8, R9 +5
1
10K
10k
R4

Scsi switcher design files

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

Scsi switcher: common questions

What microcontroller does the Scsi switcher use?

The Scsi switcher is built around the Pico, from the RP2040/RP2350 family.

How big is the Scsi switcher PCB?

The Scsi switcher measures 160 × 100 mm, has 4 copper layers and is 4.69 mm thick.

How many components are on the Scsi switcher?

75 components, from 28 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 Scsi switcher design files?

From the akuker/hw_projects 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 Scsi switcher design in my own project?

Yes, under the terms of its BSD-3-Clause license, which akuker chose for the repository.

Can I test firmware for the Scsi switcher without the hardware?

Yes. HardLabs builds a simulation of the board from its netlist and BOM, so you can run and debug RP2040/RP2350 firmware against it before you order a PCB.

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