HardLabs

ProtoTypeFN

tjhiker·Personal-MiniBadges-2025·FamilyNight-2025-KidBadge/ProtoTypeFN.kicad_pcb

ProtoTypeFN PCB layout, top view — open source AVR/Arduino board by tjhiker

About the ProtoTypeFN PCB

ProtoTypeFN is an open source AVR/Arduino PCB design by tjhiker, published on GitHub. It is a 2-layer board measuring 174.1 × 69.9 mm, with 7 components from 4 distinct parts.

Its main chip is the ATtiny85-20S, from the AVR/Arduino family. By type, the board carries 4 LEDs and 1 capacitor.

From the project

My Personal MiniBadges used at SAINTCON 2025

ProtoTypeFN bill of materials (BOM)

7 components, 4 distinct parts.

QtyPartRefs
1
ATtiny85-20S
ATTiny 85
1
Battery
BATTERIES AA x 2
4
WS2812B
LED 1, LED 2, LED 3, LED 4
1
C
C2

ProtoTypeFN design files

The KiCad project lives in the tjhiker/Personal-MiniBadges-2025 repository on GitHub; these links point at the commit this page was built from.

ProtoTypeFN: common questions

What microcontroller does the ProtoTypeFN use?

The ProtoTypeFN is built around the ATtiny85-20S, from the AVR/Arduino family.

How big is the ProtoTypeFN PCB?

The ProtoTypeFN measures 174.1 × 69.9 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the ProtoTypeFN?

7 components, from 4 distinct parts. The full bill of materials is listed on this page.

Where can I download the ProtoTypeFN design files?

From the tjhiker/Personal-MiniBadges-2025 repository on GitHub, which has the KiCad layout and the schematic; the links under Design files point to each one.

Can I use the ProtoTypeFN design in my own project?

The repository has no license, so all rights stay with tjhiker. Use it as a reference, and ask the author before reusing the design.

Can I test firmware for the ProtoTypeFN 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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