HardLabs

Sao Diamond

nsec·nsec-badge·hw/2025/sao/Sao_Diamond/Sao_Diamond.kicad_pcb

Sao Diamond PCB layout, top view — open source board by nsec
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About the Sao Diamond PCB

Sao Diamond is an open source PCB design by nsec, published on GitHub under the MIT license. It is a 2-layer board measuring 41 × 35.4 mm, with 5 components from 3 distinct parts.

By type, the board carries 2 diodes, 2 resistors and 1 connector.

It belongs with the iot & wireless and wearables designs in this gallery.

From the project

Software from the NorthSec badge

Brought to you by the Team badge of NorthSec.

The NorthSec 2025 badge is loosely based on the ESP32-C3 design with an ESP32-C3 microcontroller (ESP32-C3-WROOM-02-N4) which is used to drive several periphery devices:

- Eighteen NeoPixel RGB LEDs - Five buttons - One IR 'pairing' connector - Two Shitty Add-On V1.69bis connector

The badge is powered through a USB-C port or through 3 AAA batteries.

Sao Diamond bill of materials (BOM)

5 components, 3 distinct parts — part numbers from the project's BOM.

QtyPartRefs
1
SAO Connector SMD
J1
2
LED
D1, D2
2
330
R1, R2

Sao Diamond design files

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

Sao Diamond: common questions

How big is the Sao Diamond PCB?

The Sao Diamond measures 41 × 35.4 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the Sao Diamond?

5 components, from 3 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 Sao Diamond design files?

From the nsec/nsec-badge 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 Sao Diamond design in my own project?

Yes, under the terms of its MIT license, which nsec chose for the repository.

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