HardLabs

Attiny85 Alarm

Stevemwa·PCB_Designs·Attiny85_Alarm/Attiny85_Alarm.kicad_pcb

Attiny85 Alarm PCB layout, top view — open source AVR/Arduino board by Stevemwa

About the Attiny85 Alarm PCB

Attiny85 Alarm is an open source AVR/Arduino PCB design by Stevemwa, published on GitHub. It is a 2-layer board measuring 47.4 × 40.9 mm, with 9 components from 9 distinct parts.

Its main chip is the ATTINY85-20SU, from the AVR/Arduino family. Other key parts include the L7805. By type, the board carries 3 ICs, 2 resistors, 1 connector, 1 buzzer, 1 diode and 1 capacitor.

It belongs with the dev boards & breakouts designs in this gallery.

From the project

This Repo contains my various PCB Designs

Attiny85 Alarm, from the project README
From the project README

Main components on the Attiny85 Alarm

ATTINY85-20SUL7805

Attiny85 Alarm bill of materials (BOM)

9 components, 9 distinct parts — part numbers from the project's BOM.

QtyPartRefs
1
ATTINY85-20SU
U1
1
L7805
U2
1
~
U3
1
Barrel_Jack
J1
1
Buzzer
BZ1
1
LED
D1
1
C_Polarized
C1
1
420R
R1
1
220R
R2

Attiny85 Alarm design files

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

Attiny85 Alarm: common questions

What microcontroller does the Attiny85 Alarm use?

The Attiny85 Alarm is built around the ATTINY85-20SU, from the AVR/Arduino family.

How big is the Attiny85 Alarm PCB?

The Attiny85 Alarm measures 47.4 × 40.9 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the Attiny85 Alarm?

9 components, from 9 distinct parts, with part numbers taken from the project's own BOM. The full bill of materials is listed on this page.

Where can I download the Attiny85 Alarm design files?

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

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

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

Can I test firmware for the Attiny85 Alarm 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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