HardLabs

LargeWordClock

LikeClockwork·LargeWordClock·KiCad/LargeKickstarter/LargeKickstarter.kicad_pcb

LargeWordClock PCB layout, top view — open source AVR/Arduino board by LikeClockwork
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About the LargeWordClock PCB

LargeWordClock is an open source AVR/Arduino PCB design by LikeClockwork, published on GitHub under the MIT license. It is a 2-layer board measuring 398.2 × 398.2 mm, with 579 components from 26 distinct parts.

Its main chip is the ATMEGA328-TQFP, from the AVR/Arduino family. Other key parts include the HT16K33, DS3231, HT16K33_BOUT, Arduino_Nano and UNO_FOOTPRINT. By type, the board carries 512 LEDs, 20 resistors, 12 ICs, 12 jumpers, 8 capacitors and 6 diodes.

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

From the project

This repository holds the PCB/laser etch design files and Arduino code for my version of the word clock.

This repository holds the PCB/laser etch design files and Arduino code for my version of the word clock.

These PCBs and the laser cut glass faces are currently available via my store at: http://www.likeclockworkdesign.com/collections/kits/products/the-standard-makers-kit

The PCB measures 399x399mm and the glass faceplace measures 17"x17".

The PCBs are Arduino compatible and it runs the “Arduino on a breadboard” bootloader. The microcontroller is a Atmega328p (TQFP package) running at 8MHz that drives four 16x8 LED (512 LEDs) matrixes via four HT16K33’s. Time keeping is accomplished using a…

Main components on the LargeWordClock

HT16K33DS3231ATMEGA328-TQFPHT16K33_BOUTArduino_NanoUNO_FOOTPRINT

LargeWordClock bill of materials (BOM)

579 components, 26 distinct parts.

QtyPartRefs
4
HT16K33
U1, U4, U10, U12
1
DS3231
U2
1
ATMEGA328-TQFP
U3
4
HT16K33_BOUT
U5, U6, U9, U11
1
Arduino_Nano
U7
1
UNO_FOOTPRINT
U8
1
CONN_01X03
P1
1
CONN_01X02
P2
1
CONN_01X05
P3
1
CONN_02X03
P4
1
CONN_01X06
P5
1
BATTERY
BT1
12
JUMPER
JP1, JP2, JP3, JP4, JP5, JP6, JP7, JP8 +4
1
HOUR
SW1
1
MIN
SW2
1
SOFT
SW4
512
LED
0-0, 0-1, 0-2, 0-3, 0-4, 0-5, 0-6, 0-7 +504
1
DIODE
D1
4
DIODE
D2, D3, D4, D5
1
DIODE
D6
Show 6 more
QtyPartRefs
6
0.1uF
C1, C4, C5, C6, C7, C8
1
10uF
C2
1
1uF
C3
5
10K
R1, R2, R4, R5, R7
12
47K
R3, R6, R8, R9, R10, R11, R12, R13 +4
3
10K
R18, R19, R20

LargeWordClock design files

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

LargeWordClock: common questions

What microcontroller does the LargeWordClock use?

The LargeWordClock is built around the ATMEGA328-TQFP, from the AVR/Arduino family.

How big is the LargeWordClock PCB?

The LargeWordClock measures 398.2 × 398.2 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the LargeWordClock?

579 components, from 26 distinct parts. The full bill of materials is listed on this page.

Where can I download the LargeWordClock design files?

From the LikeClockwork/LargeWordClock repository on GitHub, which has the KiCad layout; the links under Design files point to each one.

Can I use the LargeWordClock design in my own project?

Yes, under the terms of its MIT license, which LikeClockwork chose for the repository.

Can I test firmware for the LargeWordClock 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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