HardLabs

Nixie clock

njeff·nixie-clock·PCB/nixie.kicad_pcb

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

About the Nixie clock PCB

Nixie clock is an open source AVR/Arduino PCB design by njeff, published on GitHub. It is a 2-layer board measuring 148.1 × 37.1 mm, with 29 components from 16 distinct parts.

Its main chip is the ATMEGA328P-M, from the AVR/Arduino family. Other key parts include the DS3231N, HV5622 and 78L05. By type, the board carries 11 resistors, 5 ICs, 5 capacitors, 3 connectors, 3 switches and 1 crystal.

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

From the project

Nixie Clock PCB and Code

If you plan on recreating this, I recommend changing the PCB design to use all SMD components and paying attention to high voltage clearance.

Instructables write up for this project.

Uses the following libraries: - Zak Kemble's millis library - akafugu's DS3231 RTC library

Main components on the Nixie clock

ATMEGA328P-MDS3231NHV562278L05

Nixie clock bill of materials (BOM)

29 components, 16 distinct parts.

QtyPartRefs
1
ATMEGA328P-M
IC1
1
DS3231N
U1
2
HV5622
U2, U3
1
78L05
U4
1
Crystal
Y1
1
BARREL_JACK
CON1
1
CONN_02X03
P1
1
CONN_01X03
P2
1
CR2032
BT1
3
SW_PUSH
SW1, SW2, SW3
3
0.1uF
C1, C4, C5
2
22pF
C2, C3
6
27K
R1, R4, R5, R6, R9, R10
2
100K
R2, R7
2
4K7
R3, R8
1
10K
R11

Nixie clock design files

The KiCad project lives in the njeff/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-M, from the AVR/Arduino family.

How big is the Nixie clock PCB?

The Nixie clock measures 148.1 × 37.1 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the Nixie clock?

29 components, from 16 distinct parts. The full bill of materials is listed on this page.

Where can I download the Nixie clock design files?

From the njeff/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?

The repository has no license, so all rights stay with njeff. 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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