HardLabs

Attiny85 USB

lehaihv·KiCad·Attiny85_USB/Attiny85_USB/Attiny85_USB.kicad_pcb

Attiny85 USB PCB layout, top view — open source AVR/Arduino board by lehaihv

About the Attiny85 USB PCB

Attiny85 USB is an open source AVR/Arduino PCB design by lehaihv, published on GitHub. It is a 2-layer board measuring 54.2 × 12.2 mm, with 12 components from 9 distinct parts.

Its main chip is the ATtiny85-20S, from the AVR/Arduino family. By type, the board carries 4 resistors, 3 diodes, 2 ICs, 2 connectors and 1 capacitor.

From the project

Working projects with Kicad

Main components on the Attiny85 USB

ATtiny85-20S

Attiny85 USB bill of materials (BOM)

12 components, 9 distinct parts.

QtyPartRefs
1
ATtiny85-20S
U1
1
~
U2
2
Conn_01x04
J1, J2
2
3V6
D1, D2
1
LED
D3
1
100n
C1
2
68R
R1, R2
1
330R
R3
1
1k5
R4

Attiny85 USB design files

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

Attiny85 USB: common questions

What microcontroller does the Attiny85 USB use?

The Attiny85 USB is built around the ATtiny85-20S, from the AVR/Arduino family.

How big is the Attiny85 USB PCB?

The Attiny85 USB measures 54.2 × 12.2 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the Attiny85 USB?

12 components, from 9 distinct parts. The full bill of materials is listed on this page.

Where can I download the Attiny85 USB design files?

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

Can I use the Attiny85 USB design in my own project?

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

Can I test firmware for the Attiny85 USB 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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