HardLabs

Alarmsystem

wlatif-cmyk·100daysofprojects·kicad/practiceschematics/alarmsystem/alarmsystem.kicad_pcb

Alarmsystem PCB layout, top view — open source AVR/Arduino board by wlatif-cmyk

About the Alarmsystem PCB

Alarmsystem is an open source AVR/Arduino PCB design by wlatif-cmyk, published on GitHub. It is a 2-layer board measuring 94.6 × 64 mm, with 7 components from 5 distinct parts.

Its main chip is the Arduino_Nano_v3.x, from the AVR/Arduino family. Other key parts include the IIS3DWBTR. By type, the board carries 3 resistors, 1 IC, 1 module and 1 buzzer.

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

From the project

100 days of 100 projects ;)

https://www.tiktok.com/@yappingaddiction

https://www.instagram.com/yappingaddiction/

Every day, I build something small, fun, or weird — and post it on TikTok.

This repo collects the code, notes, and mini-projects from each day.

Follow along as this slowly turns into a chaotic but glorious archive of experiments.

Day 2 — Light meter that runs off of ultrasonic sensor

Main components on the Alarmsystem

IIS3DWBTRArduino_Nano_v3.x

Alarmsystem bill of materials (BOM)

7 components, 5 distinct parts.

QtyPartRefs
1
IIS3DWBTR
IIS3DWB
ST
U1
1
Arduino_Nano_v3.x
A1
1
GND
5V1
1
Buzzer
BZ1
3
4.7K
R1, R2, R3

Alarmsystem design files

The KiCad project lives in the wlatif-cmyk/100daysofprojects repository on GitHub; these links point at the commit this page was built from.

Alarmsystem: common questions

What microcontroller does the Alarmsystem use?

The Alarmsystem is built around the Arduino_Nano_v3.x, from the AVR/Arduino family.

How big is the Alarmsystem PCB?

The Alarmsystem measures 94.6 × 64 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the Alarmsystem?

7 components, from 5 distinct parts. The full bill of materials is listed on this page.

Where can I download the Alarmsystem design files?

From the wlatif-cmyk/100daysofprojects repository on GitHub, which has the KiCad layout and the schematic; the links under Design files point to each one.

Can I use the Alarmsystem design in my own project?

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

Can I test firmware for the Alarmsystem 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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