HardLabs

Yin-Yang

0101shift·Yin-Yang

Yin-Yang PCB layout, top view — open source AVR/Arduino board by 0101shift

About the Yin-Yang PCB

Yin-Yang is an open source AVR/Arduino PCB design by 0101shift, published on GitHub. It is a 4-layer board measuring 49.8 × 49.8 mm, with 41 components from 16 distinct parts.

Its main chip is the ATtiny85-20SU, from the AVR/Arduino family. Other key parts include the MT3608 and WS2812B_Reverse_Mount. By type, the board carries 14 capacitors, 10 ICs, 9 resistors, 3 diodes, 2 transistors and 2 connectors.

It belongs with the wearables and displays & leds designs in this gallery.

From the project

Yin-Yang is an e-Badge design inspired from Yin-Yang symbol

Yin-Yang, from the project README
From the project README

Main components on the Yin-Yang

MT3608ATtiny85-20SUWS2812B_Reverse_Mount

Yin-Yang bill of materials (BOM)

41 components, 16 distinct parts.

QtyPartRefs
1
MT3608
U1
1
ATtiny85-20SU
U2
8
WS2812B_Reverse_Mount
U3, U4, U5, U6, U7, U8, U9, U10
2
BC847
Q1, Q2
2
Conn_01x03_Male
J1, J2
2
LED
D1, D3
1
SS34
D2
1
22uH
L1
2
22uF
C1, C7
2
4.7uF
C2, C6
9
0.1uF
C3, C5, C8, C9, C10, C11, C12, C13 +1
1
10uF
C4
2
10K
R1, R3
1
73.33K
R2
4
0E
R4, R5, R6, R7
2
560E
R8, R9

Yin-Yang design files

The KiCad project lives in the 0101shift/Yin-Yang repository on GitHub; these links point at the commit this page was built from.

Yin-Yang: common questions

What microcontroller does the Yin-Yang use?

The Yin-Yang is built around the ATtiny85-20SU, from the AVR/Arduino family.

How big is the Yin-Yang PCB?

The Yin-Yang measures 49.8 × 49.8 mm, has 4 copper layers and is 1.6 mm thick.

How many components are on the Yin-Yang?

41 components, from 16 distinct parts. The full bill of materials is listed on this page.

Where can I download the Yin-Yang design files?

From the 0101shift/Yin-Yang repository on GitHub, which has the KiCad layout; the links under Design files point to each one.

Can I use the Yin-Yang design in my own project?

The repository has no license, so all rights stay with 0101shift. Use it as a reference, and ask the author before reusing the design.

Can I test firmware for the Yin-Yang 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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