HardLabs

Nixie

Synthron·Nixie·Hardware/PCB/nixie.kicad_pcb

Nixie PCB layout, top view — open source ESP32 board by Synthron

About the Nixie PCB

Nixie is an open source ESP32 PCB design by Synthron, published on GitHub. It is a 4-layer board measuring 240 × 70 mm, with 311 components from 69 distinct parts.

Its main chip is the ESP32-WROOM-32, from the ESP32 family. Other key parts include the PCF8574, USBLC6-2SC6, CP2102N-Axx-xQFN28, DS1302+ and MCP3426Axx-xSN. By type, the board carries 126 resistors, 88 transistors, 40 capacitors, 20 ICs, 14 connectors and 8 test points.

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

From the project

A Nixie Clock with Z5600M and ESP32

Main components on the Nixie

PCF8574USBLC6-2SC6CP2102N-Axx-xQFN28ESP32-WROOM-32DS1302+MCP3426Axx-xSN74HC595SY317AMS1117-3.3IR2153MC34063AP

Nixie bill of materials (BOM)

311 components, 69 distinct parts.

QtyPartRefs
3
PCF8574
U101, U104, U106
1
USBLC6-2SC6
U102
1
CP2102N-Axx-xQFN28
U103
1
ESP32-WROOM-32
U105
1
DS1302+
U107
1
MCP3426Axx-xSN
U108
8
74HC595
U301, U302, U303, U304, U305, U306, U307, U308
1
SY317
U401
1
AMS1117-3.3
U402
1
IR2153
U403
1
MC34063AP
U404
2
BC846
Q1, Q2
2
BC546
Q103, Q104
8
MPSA92
Q301, Q319, Q337, Q339, Q357, Q359, Q377, Q379
72
MPSA42
Q302, Q303, Q304, Q305, Q306, Q307, Q308, Q309 +64
3
IRF740
Q401, Q402, Q403
1
BC556
Q404
2
32.768
Y1, Y101
1
USB_B
J101
1
Conn_01x10
J102
Show 49 more
QtyPartRefs
1
PT100 1
J103
1
PT100 2
J104
1
DCF77 Antenna
J105
1
Sec_One
J301
1
Sec_Ten
J302
1
Min_One
J303
1
Min_Ten
J304
1
Hr_One
J305
1
Hr_Ten
J306
2
Sec_Dec
J307, J308
1
Barrel_Jack
J401
1
SW_DIP_x08
SW101
4
SW_SPST
SW102, SW103, SW104, SW105
8
TestPoint
TP1, TP2, TP3, TP4, TP5, TP6, TP7, TP8
1
LED
D101
4
UF4007
D401, D402, D403, D405
1
1N4148
D404
1
SMB-001
FB101
1
74µH
L401
4
22µ 250V
C1, C2, C3, C4
6
100n
C5, C102, C104, C105, C407, C408
5
4µ7
C6, C101, C103, C406, C409
2
10p
C7, C8
15
100n
C106, C107, C108, C109, C110, C301, C302, C303 +7
1
1F 3V6
C111
3
1n
C112, C113, C415
1
100µ
C401
1
1µ
C414
1
200p
C418
1
10n
C419
2
22R
R1, R2
9
220k
R3, R301, R321, R325, R345, R365, R369, R390 +1
6
4k7
R4, R102, R103, R104, R105, R107
1
1k
R101
2
3k3
R108, R109
71
1k
R110, R114, R305, R306, R307, R308, R309, R310 +63
2
100 0.1%
R111, R113
3
10k
R112, R115, R403
8
100k
R302, R322, R342, R346, R366, R370, R392, R397
4
1k
R303, R343, R367, R393
6
15k
R304, R324, R344, R348, R368, R388
4
150k
R389, R391, R394, R396
2
2
R401, R404
1
0R461
R402
1
180
R405
1
91k
R406
1
1k3
R408
1
10k
RN1
1
R_Network08
RN101

Nixie design files

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

Nixie: common questions

What microcontroller does the Nixie use?

The Nixie is built around the ESP32-WROOM-32, from the ESP32 family.

How big is the Nixie PCB?

The Nixie measures 240 × 70 mm, has 4 copper layers and is 1.6062 mm thick.

How many components are on the Nixie?

311 components, from 69 distinct parts. The full bill of materials is listed on this page.

Where can I download the Nixie design files?

From the Synthron/Nixie 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 design in my own project?

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

Can I test firmware for the Nixie without the hardware?

Yes. HardLabs builds a simulation of the board from its netlist and BOM, so you can run and debug ESP32 firmware against it before you order a PCB.

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