HardLabs

AlarmClock

GHOST-mHBr·PCBs·Alarm-Clock/AlarmClock/AlarmClock.kicad_pcb

AlarmClock PCB layout, top view — open source AVR/Arduino board by GHOST-mHBr

About the AlarmClock PCB

AlarmClock is an open source AVR/Arduino PCB design by GHOST-mHBr, published on GitHub. It is a 2-layer board measuring 69.8 × 50 mm, with 36 components from 20 distinct parts.

Its main chip is the ATmega8A-A, from the AVR/Arduino family. Other key parts include the L7805 and CC56-12GWA. By type, the board carries 16 resistors, 7 capacitors, 3 ICs, 3 connectors, 3 switches and 3 diodes.

From the project

My open source PCBs

AlarmClock, from the project README
From the project README

Main components on the AlarmClock

ATmega8A-AL7805CC56-12GWA

AlarmClock bill of materials (BOM)

36 components, 20 distinct parts.

QtyPartRefs
1
ATmega8A-A
U1
1
L7805
U2
1
CC56-12GWA
U5
1
32K768
Y1
1
Jack-DC
J1
1
Output
J2
1
ISP
J3
1
Set
SW1
1
Inc
SW2
1
Dec
SW3
1
Green-smd
D1
1
1N4007
D2
1
blue-smd
D3
1
330nF
C1
4
100nF
C2, C3, C4, C5
2
18pF
C6, C7
6
47k
R1, R2, R3, R4, R5, R6
1
1k
R7
1
220
R9
8
150
R10, R11, R12, R13, R14, R15, R16, R17

AlarmClock design files

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

AlarmClock: common questions

What microcontroller does the AlarmClock use?

The AlarmClock is built around the ATmega8A-A, from the AVR/Arduino family.

How big is the AlarmClock PCB?

The AlarmClock measures 69.8 × 50 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the AlarmClock?

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

Where can I download the AlarmClock design files?

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

Can I use the AlarmClock design in my own project?

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

Can I test firmware for the AlarmClock 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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