HardLabs

TINYLED

adaand00·TINYLED·PCBv2/PCBv2/PCBv2.kicad_pcb

TINYLED PCB layout, top view — open source AVR/Arduino board by adaand00

About the TINYLED PCB

TINYLED is an open source AVR/Arduino PCB design by adaand00, published on GitHub under the GPL-3.0 license. It is a 2-layer board measuring 100 × 22 mm, with 20 components from 12 distinct parts.

Its main chip is the ATtiny412-SS, from the AVR/Arduino family. Other key parts include the MCP73831-2-OT. By type, the board carries 6 resistors, 5 diodes, 3 capacitors, 2 ICs, 2 switches and 1 connector.

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

From the project

Light-up sign with an attiny10 and three ws2812b RGB LEDs.

Light-up sign with an attiny10 and three ws2812b RGB LEDs.

This is a simple project to make a light-up stand for laser-cut acrylic signs. I mainly did this as an excercise in using the attiny10-series of microcontrollers. They are very limited with just 512 or 1024 bytes of flash and 32 bytes RAM. The final code is just under 500 bytes, of which half is for driving the LEDs.

TINYLED, from the project README
From the project README

Main components on the TINYLED

ATtiny412-SSMCP73831-2-OT

TINYLED bill of materials (BOM)

20 components, 12 distinct parts.

QtyPartRefs
1
ATtiny412-SS
U1
1
MCP73831-2-OT
U2
1
USB_C_Receptacle_USB2.0
J1
1
Battery_Cell
BT1
1
SW_SPST
SW1
1
SW_SPDT
SW2
5
WS2812B
D1, D2, D3, D4, D5
2
220nF
C1, C2
1
4.7uF
C3
2
5.1k
R1, R2
1
2k2
R3
3
10k
R4, R5, R6

TINYLED design files

The KiCad project lives in the adaand00/TINYLED repository on GitHub; these links point at the commit this page was built from.

TINYLED: common questions

What microcontroller does the TINYLED use?

The TINYLED is built around the ATtiny412-SS, from the AVR/Arduino family.

How big is the TINYLED PCB?

The TINYLED measures 100 × 22 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the TINYLED?

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

Where can I download the TINYLED design files?

From the adaand00/TINYLED repository on GitHub, which has the KiCad layout and the schematic; the links under Design files point to each one.

Can I use the TINYLED design in my own project?

Yes, under the terms of its GPL-3.0 license, which adaand00 chose for the repository.

Can I test firmware for the TINYLED 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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