HardLabs

Nixie clock

pimborman·nixie-clock

Nixie clock PCB layout, top view — open source AVR/Arduino board by pimborman

About the Nixie clock PCB

Nixie clock is an open source AVR/Arduino PCB design by pimborman, published on GitHub. It is a 4-layer board measuring 189 × 55 mm, with 66 components from 30 distinct parts.

Its main chip is the ATmega328P-P, from the AVR/Arduino family. Other key parts include the 4504, MC34063AP, HV5222PG-G, LM7805_TO220 and DS3231MZ. By type, the board carries 23 resistors, 15 capacitors, 7 ICs, 3 diodes, 2 transistors and 2 connectors.

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

From the project

This repository contains the design files of my own nixie clock. The last version is hosted on my Github Page.

Main components on the Nixie clock

4504MC34063APHV5222PG-GLM7805_TO220ATmega328P-PDS3231MZ

Nixie clock bill of materials (BOM)

66 components, 30 distinct parts.

QtyPartRefs
1
4504
U1
1
MC34063AP
U2
2
HV5222PG-G
U3, U5
1
LM7805_TO220
U4
1
ATmega328P-P
U6
1
DS3231MZ
U7
1
2N3906
Q1
1
IRF644
Q2
1
Barrel_Jack
J1
1
Conn_01x02_Pin
J2
1
Battery_Cell
BT1
6
IN-14
N1, N2, N3, N4, N5, N6
4
IN-3
N7, N8, N9, N10
1
1k
RV1
1
RotaryEncoder_Switch
SW1
1
1N914
D1
1
UF4007
D2
1
220
D3
1
100u
L1
9
0.1u
C1, C3, C4, C6, C7, C8, C10, C11 +1
Show 10 more
QtyPartRefs
1
470p
C2
1
100u
C5
1
4.7u
C9
3
0.01u
C12, C13, C15
1
1k
R1
1
750k
R2
4
4.7k
R3, R15, R17, R22
1
1
R4
10
15k
R5, R6, R7, R8, R9, R10, R11, R12 +2
6
10k
R16, R18, R19, R20, R21, R23

Nixie clock design files

The KiCad project lives in the pimborman/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 ATmega328P-P, from the AVR/Arduino family.

How big is the Nixie clock PCB?

The Nixie clock measures 189 × 55 mm, has 4 copper layers and is 1.6 mm thick.

How many components are on the Nixie clock?

66 components, from 30 distinct parts. The full bill of materials is listed on this page.

Where can I download the Nixie clock design files?

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

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

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

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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