

MacNugget
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
1README
README.mdBlueSCSI Mini PCB Clone
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| Qty | Value | Footprint | References |
|---|---|---|---|
| 2 | 100nF | Capacitor_SMD:C_0603_1608Metric | C3, C4 |
| 2 | 10pF | Capacitor_SMD:C_0603_1608Metric | C1, C2 |
| 2 | 1uF | Capacitor_SMD:C_0805_2012Metric | C5, C6 |
| 1 | 10k | Resistor_SMD:R_0603_1608Metric | R3 |
| 1 | 220 | Resistor_SMD:R_0603_1608Metric | R1 |
| 1 | 8 MHz | Crystal:Crystal_HC49-4H_Vertical | Y1 |
| 1 | AMS1117-3.3 | Package_TO_SOT_SMD:SOT-223-3_TabPin2 | U2 |
| 1 | Conn_01x03_Pin | Connector_PinSocket_2.54mm:PinSocket_1x03_P2.54mm_Vertical | J4 |
| 1 | Conn_02x25_Odd_Even | Connector_PinHeader_2.54mm:PinHeader_2x25_P2.54mm_Vertical | J2 |
| 1 | LED | LED_SMD:LED_0805_2012Metric | D1 |
| 1 | LOGO | LOGO | G*** |
| 1 | Micro_SD_Card | Connector_Card:microSD_HC_Molex_47219-2001 | J1 |
| 1 | STM32F103C6Tx | Package_QFP:LQFP-48_7x7mm_P0.5mm | U1 |
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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