HardLabs

ControllerBoardSMDPSU

Fredovsky·B13B-Nixie-clock·Nixie Clock v1.1/PCB/KiCAD project/ControllerBoardSMDPSU.kicad_pcb

ControllerBoardSMDPSU PCB layout, top view — open source AVR/Arduino board by Fredovsky

About the ControllerBoardSMDPSU PCB

ControllerBoardSMDPSU is an open source AVR/Arduino PCB design by Fredovsky, published on GitHub. It is a 2-layer board measuring 139 × 34 mm, with 51 components from 29 distinct parts.

Its main chip is the ATMEGA8P-AU, from the AVR/Arduino family. Other key parts include the LM340?-MP, CD4504BTSSOP16, MC34063 and HV5530. By type, the board carries 17 capacitors, 16 resistors, 6 ICs, 3 jumpers, 2 transistors and 2 switches.

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

From the project

Nixie clock made from F9057 Nixie tubes (B13B sockets).

A beautiful 4-digit nixie tube clock powered by an ATmega328P microcontroller, featuring automatic brightness adjustment and anti-cathode poisoning routines.

- 4-Digit Time Display: Shows hours and minutes in HH:MM format - Automatic Brightness Control: Gradually adjusts brightness throughout the day based on time (no light sensor required) - Cathode Poisoning Prevention: Automatic cleaning cycles to maintain nixie tube health - Short cycle every hour (15 seconds) - Long cycle daily at 3:00 AM (30 minutes) - Simple Time Setting: Two-button interface (Hour/Minute) with auto-repeat on long…

Main components on the ControllerBoardSMDPSU

ATMEGA8P-AULM340?-MPCD4504BTSSOP16MC34063HV5530

ControllerBoardSMDPSU bill of materials (BOM)

51 components, 29 distinct parts.

QtyPartRefs
1
ATMEGA8P-AU
IC1
1
LM340?-MP
IC2
1
CD4504BTSSOP16
IC3
1
MC34063
IC4
2
HV5530
U1, U2
1
6V PNP
Q1
1
IRFR220
Q2
1
CUI_PWR_JACK
12V IN
1
CR2032-SMD-HLDR
BAT0
3
PINHD-2X8
JP1, JP2, JP3
2
TL1105
S1, S2
1
SOT123DIODE
D1
1
RFN10BM3STL
D2
1
100uH
L1
1
0.01uF
C1
1
680pF
C2
10
0.1uF
C3, C4, C5, C6, C7, C8, C10, C13 +2
1
10uF
C11
1
3.3uF
C12
1
0.22uF
C16
Show 9 more
QtyPartRefs
1
220uF
C17
1
CPOL-EU153CLV-0605
C18
1
13.7K, 1%
R1
1
1K
R2
1
4.02K 1%
R3
1
475K
R4
2
0.5
R5, R6
6
10k
R7, R11, R12, R13, R14, R17
4
4.7k
R8, R9, R18, R19

ControllerBoardSMDPSU design files

The KiCad project lives in the Fredovsky/B13B-Nixie-clock repository on GitHub; these links point at the commit this page was built from.

ControllerBoardSMDPSU: common questions

What microcontroller does the ControllerBoardSMDPSU use?

The ControllerBoardSMDPSU is built around the ATMEGA8P-AU, from the AVR/Arduino family.

How big is the ControllerBoardSMDPSU PCB?

The ControllerBoardSMDPSU measures 139 × 34 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the ControllerBoardSMDPSU?

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

Where can I download the ControllerBoardSMDPSU design files?

From the Fredovsky/B13B-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 ControllerBoardSMDPSU design in my own project?

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

Can I test firmware for the ControllerBoardSMDPSU 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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