HardLabs

Attiny85 I2C RGB LED v2.1

rsedak·attiny85_I2C_RGB_LED_v2.1·design_files/attiny85_I2C_RGB_LED_v21.kicad_pcb

Attiny85 I2C RGB LED v2.1 PCB layout, top view — open source AVR/Arduino board by rsedak

About the Attiny85 I2C RGB LED v2.1 PCB

Attiny85 I2C RGB LED v2.1 is an open source AVR/Arduino PCB design by rsedak, published on GitHub under the Custom license license. It is a 2-layer board measuring 20 × 37 mm, with 11 components from 8 distinct parts.

Its main chip is the ATtiny85, from the AVR/Arduino family. By type, the board carries 5 resistors, 2 jumpers, 1 IC, 1 connector, 1 diode and 1 capacitor.

From the project

Purpose of ATtiny85 I2C RGB LED module is student education. It is published under Attribution-ShareAlike 4.0 International (CC BY-SA 4.0) license. I hope you will enjoy it.

Purpose of ATtiny85 I2C RGB LED module is student education. It shows how to controll RGB via I2C protocol.

Contributor ------------ - Robert Sedak — features, programming, schematic design, CAD design.

Application ----------- Robert Sedak made a video with example programmed in Arduino IDE with ATtiny85 support:

You can download example for Arduino IDE from here.

Attiny85 I2C RGB LED v2.1, from the project README
From the project README

Main components on the Attiny85 I2C RGB LED v2.1

ATtiny85

Attiny85 I2C RGB LED v2.1 bill of materials (BOM)

11 components, 8 distinct parts.

QtyPartRefs
1
ATtiny85
U1
1
Conn_01x04_Male
J1
2
SolderJumper_2_Open
JP1, JP2
1
LED_RCGB
D1
1
0.1uF
C1
2
560R
R1, R3
1
620R
R2
2
4.7K
R4, R5

Attiny85 I2C RGB LED v2.1 design files

The KiCad project lives in the rsedak/attiny85_I2C_RGB_LED_v2.1 repository on GitHub; these links point at the commit this page was built from.

Attiny85 I2C RGB LED v2.1: common questions

What microcontroller does the Attiny85 I2C RGB LED v2.1 use?

The Attiny85 I2C RGB LED v2.1 is built around the ATtiny85, from the AVR/Arduino family.

How big is the Attiny85 I2C RGB LED v2.1 PCB?

The Attiny85 I2C RGB LED v2.1 measures 20 × 37 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the Attiny85 I2C RGB LED v2.1?

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

Where can I download the Attiny85 I2C RGB LED v2.1 design files?

From the rsedak/attiny85_I2C_RGB_LED_v2.1 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 I2C RGB LED v2.1 design in my own project?

It is published under Custom license, which limits how it may be reused; read the license before building on it.

Can I test firmware for the Attiny85 I2C RGB LED v2.1 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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