HardLabs

Hv

jason-watkins·nixie-clock·pcb/hv/hv.kicad_pcb

Hv PCB layout, top view — open source board by jason-watkins

About the Hv PCB

Hv is an open source PCB design by jason-watkins, published on GitHub under the CC-BY-SA-4.0 license. It is a 2-layer board measuring 85 × 55 mm, with 47 components from 42 distinct parts.

Other key parts include the LM5156H. By type, the board carries 18 resistors, 12 capacitors, 7 diodes, 3 transistors, 2 connectors and 2 test points.

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

From the project

USB-C powered nixie tube clock. Four IN-12B digits, two INS-1 colon lamps, K155ID1 BCD decoder/drivers.

USB-C powered nixie tube clock. Four IN-12B digits, two INS-1 colon lamps, K155ID1 BCD decoder/drivers.

USB-PD negotiates 5-12V supply and feeds it into 3 converters:

- Flyback boost: 170V for the tube anodes - 3.3V buck boost for the MCU. Boost exists to make sure a 3.3V FTDI type UART adapter provides the full 3.3V to the rail. - 5V buck for the BCD drivers, bypassed if the source itself is 5V

Hv, from the project README
From the project README

Main components on the Hv

LM5156H

Hv bill of materials (BOM)

47 components, 42 distinct parts.

QtyPartRefs
1
LM5156H
U1
1
IRL540N
Q1
2
TN2106N3-G
Q2, Q3
1
JST XH
J1
1
Phoenix MSTB
J2
1
3296
RV1
1
DA2032-AL
T1
1
+170V
TP1
1
GND
TP2
1
UF4005
D1
1
UF4005
D2
1
SB240S
D3
1
ZPD3B0
D4
1
SB140-T
D5
2
1N4148
D6, D7
1
100uF
C1
1
4.7uF
C2
1
12nF
C3
1
4.7uF
C4
1
100nF
C5
Show 22 more
QtyPartRefs
1
1uF
C6
1
470pF, C0G
C7
1
2.2uF
C8
1
470nF
C9
1
220pF, C0G
C10
1
100nF
C11
1
4.7nF, C0G
C12
1
1.5M
R1
3
100k
R2, R10, R18
1
30k
R3
1
3.3
R4
1
10
R5
1
63.4k
R6
1
32.4k
R7
1
39m
R8
1
100
R9
2
845k
R11, R12
1
9.09k
R13
1
147k
R14
1
10k
R15
1
82
R16
1
1M
R17

Hv design files

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

Hv: common questions

How big is the Hv PCB?

The Hv measures 85 × 55 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the Hv?

47 components, from 42 distinct parts. The full bill of materials is listed on this page.

Where can I download the Hv design files?

From the jason-watkins/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 Hv design in my own project?

Yes, under the terms of its CC-BY-SA-4.0 license, which jason-watkins chose for the repository.

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