ZuluSCSI-Pico-OSHW

ZuluSCSI·ZuluSCSI-Pico-OSHW·ZuluSCSI-Pico-OSHW-kicad/ZuluSCSI-Pico-OSHW.kicad_pcb

About the ZuluSCSI-Pico-OSHW PCB

ZuluSCSI-Pico-OSHW is an open source RP2040/RP2350 PCB design by ZuluSCSI, published on GitHub under the CERN-OHL-S-2.0 license. It is a 2-layer board measuring 90 × 100 mm, with 118 components from 31 distinct parts.

Its main chip is the Pico W, from the RP2040/RP2350 family. Other key parts include the 74LVTH125MTC, 74LVT245BBT20-13 and LM3674MFX-ADJ/NOPB. By type, the board carries 47 resistors, 24 capacitors, 21 inductors, 9 ICs, 7 connectors and 6 diodes.

From the project

ZuluSCSI Pico - An Open Source Hardware SCSI emulator

ZuluSCSI™ Pico Community Edition - Open Source Hardware ========================

This repository contains the KiCAD 7 schematic and PCB design files for the Pico-based ZuluSCSI™ SCSI to SD storage emulator, which is derived from the ZuluSCSI RP2040 board design. Firmware for ZuluSCSI is available at http://github.com/ZuluSCSI/ZuluSCSI-firmware.

This hardware design is licensed under the terms of the strongly reciprocal CERN OHL-S V2 license, which can be viewed in full at https://ohwr.org/cernohlsv2.txt and https://ohwr.org/cernohlsv2.pdf.

ZuluSCSI-Pico-OSHW, from the project README — From the project README

Main components on the ZuluSCSI-Pico-OSHW

Pico W 74LVTH125MTC 74LVT245BBT20-13 LM3674MFX-ADJ/NOPB

ZuluSCSI-Pico-OSHW bill of materials (BOM)

118 components, 31 distinct parts — part numbers from the project's BOM.

Qty	Part	Footprint	Refs
1	Pico W	RPi_Pico_W_SMD_TH	U1
3	74LVTH125MTC 74LVT125 Onsemi	SSOP_TSSOP-14_4.4x5mm_Pitch0.65mm_PCBWay-MaskClearance0.22mm	U101, U102, U103
4	74LVT245BBT20-13 74LVT245 Diodes Inc	SSOP_TSSOP-20_5.3x7.2mm_P0.65mm	U105, U106, U107, U108
1	LM3674MFX-ADJ/NOPB LM3674-ADJ Texas Instruments	TSOT-23-5	U201
1	10067847-001RLF SD_Card Amphenol	SD-FCI-10067847-001	CON401
1	USB_A	USB_A_Molex_105057_Vertical	J301
1	LED	PinHeader_1x02_P2.54mm_Vertical	J304
1	EXT_SDCARD	PinHeader_1x08_P2.54mm_Vertical	J305
1	Z-231012050106 CONN_02X25	Pin_Header_Angled_2x25	P1
1	171826-4 Floppy_BERG	floppy-berg	P201
1	10118194-0001LF USB_OTG Amphenol	USB_Micro-B_Amphenol_10118194_Horizontal	P301
1	0ZCJ0050FF2G 500mA Hold Bel Fuse Inc	Fuse_1206_3216Metric	F202
1	JUMPER	PinHeader_1x02_P2.54mm_Vertical	JP201
1	Speaker	Buzzer_TDK_PS1240P02BT_D12.2mm_H6.5mm	LS301
1	219-3MSTR SW_DIP_x03 CTS Electrocomponents	SW_DIP_SPSTx03_Slide_6.7x9.18mm_W8.61mm_P2.54mm_LowProfile	SW1
5	MBRX120LF-TP D_Schottky Micro Commercial Co	D_SOD-123	D201, D202, D203, D204, D205
1	LY R976-PS-36 LED Osram Opto Semiconductors Inc	LED_0805_2012Metric	D302
20	PE-0603FB601ST Ferrite_Bead_Small Pulse Electronics Network	L_0603_1608Metric	L101, L102, L103, L104, L105, L106, L107, L108 +12
1	DFE252012P-2R2M=P2 2.2uH Murata Electronics North America	Inductor_1008	L201
9	CL10B104KB8NNWC 100nF Samsung	C_0603_1608Metric	C101, C102, C103, C104, C105, C106, C107, C202 +1

Show 11 more

Qty	Part	Footprint	Refs
4	C0603C120J5GAC7867 12pF KEMET	C_0603_1608Metric	C111, C209, C211, C215
6	CL21A106KPFNNNG 10uF Samsung	C_0805_2012Metric	C114, C201, C207, C210, C320, C322
4	UUD1C221MCL1GS 220uF Nichicon	CP_Elec_6.3x7.7	C203, C204, C205, C206
1	UVY1C102MPD1TD N/A	CP_Radial_D10.0mm_P5.00mm	C217
19	RC0603FR-07110RL 110 Yageo	R_0603_1608Metric	R101, R102, R103, R104, R105, R106, R107, R108 +11
8	RC0603JR-071KL 1k Yageo	R_0603_1608Metric	R122, R123, R124, R125, R301, R321, R322, R323
13	RC0603JR-074K7L 4k7 Yageo	R_0603_1608Metric	R126, R127, R128, R129, R205, R311, R312, R313 +5
1	RC0603FR-07510KL 510k Yageo	R_0603_1608Metric	R201
2	RC0603FR-07100KL 100k Yageo	R_0603_1608Metric	R202, R203
3	RC0603FR-0762RL 62 Yageo	R_0603_1608Metric	R304, R305, R306
1	N/A	R_0402_1005Metric	R320

ZuluSCSI-Pico-OSHW design files

The KiCad project lives in the ZuluSCSI/ZuluSCSI-Pico-OSHW repository on GitHub; these links point at the commit this page was built from.

ZuluSCSI-Pico-OSHW: common questions

What microcontroller does the ZuluSCSI-Pico-OSHW use?

The ZuluSCSI-Pico-OSHW is built around the Pico W, from the RP2040/RP2350 family.

How big is the ZuluSCSI-Pico-OSHW PCB?

The ZuluSCSI-Pico-OSHW measures 90 × 100 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the ZuluSCSI-Pico-OSHW?

118 components, from 31 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 ZuluSCSI-Pico-OSHW design files?

From the ZuluSCSI/ZuluSCSI-Pico-OSHW 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 ZuluSCSI-Pico-OSHW design in my own project?

Yes, under the terms of its CERN-OHL-S-2.0 license, which ZuluSCSI chose for the repository.

Can I test firmware for the ZuluSCSI-Pico-OSHW 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.