HardLabs

Saintcon-2026-minibadge

ZeroStack-Labs·saintcon-2026-minibadge·hardware/pcb/kicad/ZeroStack_MiniBadge.kicad_pcb

Saintcon-2026-minibadge PCB layout, top view — open source AVR/Arduino board by ZeroStack-Labs

About the Saintcon-2026-minibadge PCB

Saintcon-2026-minibadge is an open source AVR/Arduino PCB design by ZeroStack-Labs, published on GitHub under the MIT license. It is a 2-layer board measuring 25.4 × 25.4 mm, with 7 components from 5 distinct parts.

Its main chip is the ATtiny402-SS, from the AVR/Arduino family. By type, the board carries 2 diodes, 2 resistors, 1 IC and 1 capacitor.

From the project

Custom SAINTCON-compatible MiniBadge featuring an ATtiny402, dual breathing LEDs, a two-color 3D-printed topper, and a custom UPDI programming jig.

A custom SAINTCON-compatible MiniBadge designed as a ZeroStack Labs hardware/firmware learning project.

This project combines PCB design, embedded firmware, 3D printing, mechanical design, and custom fabrication into a small badge intended for use with the SAINTCON MiniBadge ecosystem.

The finished design features an ATtiny402 microcontroller, two green LEDs, a custom two-color 3D-printed topper, and a dedicated UPDI programming/test jig.

Main components on the Saintcon-2026-minibadge

ATtiny402-SS

Saintcon-2026-minibadge bill of materials (BOM)

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

QtyPartRefs
1
ATtiny402-SS
U1
1
MiniBadge_Full
MB1
2
LED
D2, D3
1
0.1uF
C1
2
220R
R2, R3

Saintcon-2026-minibadge design files

The KiCad project lives in the ZeroStack-Labs/saintcon-2026-minibadge repository on GitHub; these links point at the commit this page was built from.

Saintcon-2026-minibadge: common questions

What microcontroller does the Saintcon-2026-minibadge use?

The Saintcon-2026-minibadge is built around the ATtiny402-SS, from the AVR/Arduino family.

How big is the Saintcon-2026-minibadge PCB?

The Saintcon-2026-minibadge measures 25.4 × 25.4 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the Saintcon-2026-minibadge?

7 components, from 5 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 Saintcon-2026-minibadge design files?

From the ZeroStack-Labs/saintcon-2026-minibadge 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 Saintcon-2026-minibadge design in my own project?

Yes, under the terms of its MIT license, which ZeroStack-Labs chose for the repository.

Can I test firmware for the Saintcon-2026-minibadge without the hardware?

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

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