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2 layers22.6 × 63.8 mmMacNugget, the printed circuit board in 3D

A tiny bluescsi clone

Size
22.6 × 63.8 mm
Copper layers
2
Thickness
1.6 mm
Parts
16
Nets
45
Pads
137
Tracks, vias
323, 80
Pours
4
Routed
Yes
KiCad
KiCad 8.0 (file 20240108)
Created
4 Feb 2026
Updated
4 Feb 2026

Overview

MacNugget is an open-source printed circuit board by KasperVerweij, from the KasperVerweij/MacNugget repository on GitHub. It is a 2-layer board of 22.6 × 63.8 mm with 16 parts on 45 nets, routed with 323 tracks and 80 vias.

It is built around the AMS1117-3.3. Its parts include 6 capacitors, 3 connectors, 2 resistors, 2 ICs and 1 diode. It belongs with the STM32 boards of this library.

Main components

1

README

README.md

BlueSCSI Mini PCB Clone

image

A compact STM32-based PCB clone of the BlueSCSI project - a personal hardware experiment.

Overview

This is a smaller form-factor version of the BlueSCSI hardware design, created as a fun PCB project experiment. It implements the core BlueSCSI functionality in a more compact layout.

Important Limitations

⚠️ This board lacks SCSI termination circuitry - As a result, it does not work reliably on all machines.

Compatibility

  • ✅ Confirmed Working: PowerMac systems
  • ❓ Limited Testing: Other SCSI devices may or may not work depending on their termination requirements

Project Status

This is a personal experimental project created for learning and fun. It is not a commercial product and is not intended for sale.

Credits

This project uses the excellent BlueSCSI firmware.

Full credit goes to the BlueSCSI team for their amazing work on the firmware and original hardware design. This PCB is simply a hardware variant/experiment based on their groundwork.

Disclaimer

This is an unofficial clone/modification. For a fully-featured, tested, and supported BlueSCSI solution, please visit the official BlueSCSI project.

License

Hardware files follow their own licensing terms. The BlueSCSI firmware retains its original license from the BlueSCSI project.


This is a hobbyist project - use at your own risk!

Parts

16
QtyValueFootprintReferences
2100nFCapacitor_SMD:C_0603_1608MetricC3, C4
210pFCapacitor_SMD:C_0603_1608MetricC1, C2
21uFCapacitor_SMD:C_0805_2012MetricC5, C6
110kResistor_SMD:R_0603_1608MetricR3
1220Resistor_SMD:R_0603_1608MetricR1
18 MHzCrystal:Crystal_HC49-4H_VerticalY1
1AMS1117-3.3Package_TO_SOT_SMD:SOT-223-3_TabPin2U2
1Conn_01x03_PinConnector_PinSocket_2.54mm:PinSocket_1x03_P2.54mm_VerticalJ4
1Conn_02x25_Odd_EvenConnector_PinHeader_2.54mm:PinHeader_2x25_P2.54mm_VerticalJ2
1LEDLED_SMD:LED_0805_2012MetricD1
1LOGOLOGOG***
1Micro_SD_CardConnector_Card:microSD_HC_Molex_47219-2001J1
1STM32F103C6TxPackage_QFP:LQFP-48_7x7mm_P0.5mmU1

Questions

How big is the MacNugget PCB?

It measures 22.6 × 63.8 mm and has 2 copper layers, 1.6 mm thick.

What parts does the MacNugget use?

16 parts, built around the AMS1117-3.3. The full list of its parts is on this page, with links to each part's symbol and footprint where PCBKit's library has them.

Where can I download the MacNugget KiCad files?

From the KasperVerweij/MacNugget repository on GitHub, at the commit this page was made from: the board is MacNugget/MacNugget.kicad_pcb and its schematic MacNugget/MacNugget.kicad_sch. PCBKit opens the board in the browser, with nothing to install.

Can I use the MacNugget design in my own project?

Its repository states no licence, so its author keeps all rights: ask KasperVerweij before reusing the design.

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