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Ornament2022

Chris-Johnston·ornament2022·pcb/ornament2022.kicad_pcb

Ornament2022 PCB layout, top view — open source AVR/Arduino board by Chris-Johnston

About the Ornament2022 PCB

Ornament2022 is an open source AVR/Arduino PCB design by Chris-Johnston, published on GitHub. It is a 2-layer board measuring 1.6 × 1.6 mm, with 20 components from 8 distinct parts.

Its main chip is the ATtiny404-SS, from the AVR/Arduino family. By type, the board carries 7 diodes, 7 resistors, 2 switches, 1 IC, 1 connector and 1 battery holder.

From the project

An ATTiny404 powered Xmas Tree Ornament

An ATTiny404 LED Xmas tree ornament. I made a bunch of these as gifts.

Schematic, in case I don't feel like opening KiCad:

- [svg2mod] was used to generate the footprint of the board, and the front silkscreen layer - The Tree Emoji [u1f332] SVG was modified so I could create a footprint from it. - I referred to [SerialUPDI] to figure out UPDI, but made my own board for adapting between FTDI and UPDI (and left a typo in the name, oops) - [megaTinyCore] was used with Arduino (via the vscode Arduino extension) to upload to the ATTiny404

Ornament2022, from the project README
From the project README

Main components on the Ornament2022

ATtiny404-SS

Ornament2022 bill of materials (BOM)

20 components, 8 distinct parts.

QtyPartRefs
1
ATtiny404-SS
U1
1
Conn_01x03
J1
1
Battery
BT1
1
SW_Push
SW1
1
SW_DPDT_x2
SW2
7
LED_Dual_2pin
D1, D2, D3, D4, D5, D6, D7
1
C
C1
7
R
R1, R2, R3, R4, R5, R6, R7

Ornament2022 design files

The KiCad project lives in the Chris-Johnston/ornament2022 repository on GitHub; these links point at the commit this page was built from.

Ornament2022: common questions

What microcontroller does the Ornament2022 use?

The Ornament2022 is built around the ATtiny404-SS, from the AVR/Arduino family.

How big is the Ornament2022 PCB?

The Ornament2022 measures 1.6 × 1.6 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the Ornament2022?

20 components, from 8 distinct parts. The full bill of materials is listed on this page.

Where can I download the Ornament2022 design files?

From the Chris-Johnston/ornament2022 repository on GitHub, which has the KiCad layout and the schematic; the links under Design files point to each one.

Can I use the Ornament2022 design in my own project?

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

Can I test firmware for the Ornament2022 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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