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Nixie clock

shengwen-tw·nixie-clock·circuit/prototype_ver1/control_board/nixie-clock.kicad_pcb

Nixie clock PCB layout, top view — open source AVR/Arduino board by shengwen-tw

About the Nixie clock PCB

Nixie clock is an open source AVR/Arduino PCB design by shengwen-tw, published on GitHub under the MIT license. It is a 2-layer board measuring 102.7 × 51.6 mm, with 44 components from 22 distinct parts.

Its main chip is the ATMEGA328-P, from the AVR/Arduino family. Other key parts include the LM7805, TLP521, HEF42028 and K155ID1. By type, the board carries 12 resistors, 10 connectors, 8 ICs, 5 capacitors, 4 switches and 3 transistors.

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

From the project

IN-14 Russian nixie tube clock

A Russian IN-14 Nixie tube clock which support time display, alram and mp3 playing function

You must install the following arduino libraries before compiling the firmware (find the zip in firmware directory)

DFPlayer driver (a modified version of AltSoftwareSerial) RTC and Time library

The hardware was designed under Kicad 4, any previous version may not work properly.

Nixie clock, from the project README
From the project README

Main components on the Nixie clock

ATMEGA328-PLM7805TLP521HEF42028K155ID1

Nixie clock bill of materials (BOM)

44 components, 22 distinct parts.

QtyPartRefs
1
ATMEGA328-P
IC1
1
LM7805
U1
4
TLP521
U2, U3, U4, U7
1
HEF42028
U5
1
K155ID1
U6
3
NPN
Q1, Q2, Q3
1
16MHZ
X1
6
CONN_2
P1, P2, P7, P8, P9, P10
2
CONN_4
P3, P4
1
CONN_8
P5
1
CONN_12
P6
1
P***
1PIN
3
SW_PUSH
SW1, SW2, SW3
1
SW_PUSH
SW4
1
100 uf
C1
2
0.1 uf
C2, C3
2
22pf
C4, C5
1
100k ohm
R1
6
330ohm
R2, R3, R4, R5, R6, R7
2
4.7k ohm
R8, R9
Show 2 more
QtyPartRefs
1
10k ohm
R10
2
1.8kohm
R11, R12

Nixie clock design files

The KiCad project lives in the shengwen-tw/nixie-clock repository on GitHub; these links point at the commit this page was built from.

Nixie clock: common questions

What microcontroller does the Nixie clock use?

The Nixie clock is built around the ATMEGA328-P, from the AVR/Arduino family.

How big is the Nixie clock PCB?

The Nixie clock measures 102.7 × 51.6 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the Nixie clock?

44 components, from 22 distinct parts. The full bill of materials is listed on this page.

Where can I download the Nixie clock design files?

From the shengwen-tw/nixie-clock repository on GitHub, which has the KiCad layout; the links under Design files point to each one.

Can I use the Nixie clock design in my own project?

Yes, under the terms of its MIT license, which shengwen-tw chose for the repository.

Can I test firmware for the Nixie clock 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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