HardLabs

ChristmasOrnament

PrincipIoT·ChristmasOrnament·OrnamentSCH/OrnamentSCH.kicad_pcb

ChristmasOrnament PCB layout, top view — open source AVR/Arduino board by PrincipIoT

About the ChristmasOrnament PCB

ChristmasOrnament is an open source AVR/Arduino PCB design by PrincipIoT, published on GitHub. It is a 2-layer board measuring 94.7 × 112.9 mm, with 27 components from 10 distinct parts.

Its main chip is the ATtiny25-20S, from the AVR/Arduino family. By type, the board carries 10 diodes, 10 resistors, 2 connectors, 2 switches, 2 capacitors and 1 IC.

From the project

2023 Christmas Ornament

These are the design files for PrincipIoT's Christmas Tree PCB Ornament.

This repository includes the KiCAD design files, schematic, and bill of materials in the OrnamentSCH folder, and software in the OrnamentCode file. The hex file for the compiled firmware is available on the releases page.

These ornaments are available to purchase on Etsy and Tindie

avrdude -Cavrdude.conf -v -pattiny25 -cusbasp -e -Uefuse:w:0xFF:m -Uhfuse:w:0b11010111:m -Ulfuse:w:0xE2:m -Uflash:w:fwv1.0.hex:i

ChristmasOrnament, from the project README
From the project README

Main components on the ChristmasOrnament

ATtiny25-20S

ChristmasOrnament bill of materials (BOM)

27 components, 10 distinct parts — part numbers from the project's BOM.

QtyPartRefs
1
ATtiny25-20S
U1
1
Conn_01x02_Pin
J1
1
Conn_01x06_Pin
J2
2
SW_SPDT
SW1, SW2
5
WHITE
D1, D3, D5, D7, D9
5
RED
D2, D4, D6, D8, D10
1
4.7uF
C1
1
.1uF
C2
5
10Ω
R1, R3, R5, R7, R9
5
100Ω
R2, R4, R6, R8, R10

ChristmasOrnament design files

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

ChristmasOrnament: common questions

What microcontroller does the ChristmasOrnament use?

The ChristmasOrnament is built around the ATtiny25-20S, from the AVR/Arduino family.

How big is the ChristmasOrnament PCB?

The ChristmasOrnament measures 94.7 × 112.9 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the ChristmasOrnament?

27 components, from 10 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 ChristmasOrnament design files?

From the PrincipIoT/ChristmasOrnament 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 ChristmasOrnament design in my own project?

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

Can I test firmware for the ChristmasOrnament 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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