2 layers35.6 × 33 mm
Omnixie v1
NA-varez/OMNIXIE
Nixie driver board to enable easy inclusion of a Nixie tube into projects. One common driver board to support a wide range of Nixie Indicator Tubes
53 partsMIT
2 layers62.3 × 71.5 mm
Omnixie v0 2
NA-varez/OMNIXIENixie driver board to enable easy inclusion of a Nixie tube into projects. One common driver board to support a wide range of Nixie Indicator Tubes
- Size
- 62.3 × 71.5 mm
- Copper layers
- 2
- Thickness
- 2.92 mm
- Parts
- 64
- Nets
- 72
- Pads
- 249
- Tracks, vias
- 569, 78
- Pours
- 7
- Routed
- Yes
- KiCad
- KiCad 10.0 (file 20260206)
- Created
- 23 Nov 2025
- Updated
- 1 Sep 2026
Overview
Omnixie v0 2 is an open-source printed circuit board by NA-varez, from the NA-varez/OMNIXIE repository on GitHub, published under the MIT licence. It is a 2-layer board of 62.3 × 71.5 mm with 64 parts on 72 nets, routed with 569 tracks and 78 vias.
It is built around the CH32V003F4U6, PI4IOE5V6416ZDEX and XC6206P332MR, with the BSS123, SM04B-SRSS-TB and ATB322515-0110 among its other parts. Its parts include 14 resistors, 13 transistors, 8 connectors, 5 capacitors and 3 ICs. It belongs with the lEDs and displays boards and the RISC-V boards of this library.
Main components
9
CH32V003F4U6
QFN-20(3X3)16KB 18 48MHz Others QFN-20(3X3) Microcontrollers (MCU/MPU/SOC) ROHSWCH (Nanjing Qinheng Microelectronics)Microcontrollers (MCU/MPU/SOC)
PI4IOE5V6416ZDEX
QFN-24-EP(4x4)-40℃~+85℃ 1.5uA 1.65V~5.5V 10mA 16 200mV 25mA 400kHz 4V I2C Interrupt Output Push-Pull、Open-drain Reset function、IO level configurable QFN-24-EP(4x4) I/O Expanders ROHSDiodes IncorporatedI/O Expanders
XC6206P332MR
SOT-23-40℃~+85℃@(Ta) 1 1uA 200mA 3.3V 6V Fixed Over Current Protection Positive SOT-23-3L Voltage Regulators - Linear, Low Drop Out (LDO) Regulators ROHSTorex SemiconductorVoltage Regulators - Linear, Low Drop Out (LDO) RegulatorsBSS123
SOT-23-55℃~+150℃ 1 N-channel 1.4V 1.4nC@10V 100V 170mA 22pF 2pF 3.5pF 680mW 6Ω@10V、10Ω@4.5V N-Channel SOT-23 MOSFETs ROHShongjiachengMOSFETs
SM04B-SRSS-TB
Header SR 1.0 SMT side entry, 1mm pitchJSTUncategorised
ATB322515-0110
-Power TransformersTDKSK3200AFL-TP
DO-221AC(SMA-FL)Schottky DiodesMicro Commercial Components
STN1NK60ZL
SOT-223-55℃~+150℃ 1 N-channel 15Ω@10V 17.6pF 2.8pF 3.3W 300mA 6.9nC@10V 600V 94pF N-Channel SOT-223 MOSFETs ROHSSTMicroelectronicsMOSFETs
USB4105-GF-A
SMD-40℃~+85℃ 1 12P 48V 5A Black Female Surface Mount, Right Angle Type-C USB 2.0 SMD USB Connectors ROHSGlobal Connector Technology (GCT)USB Connectors
README
README.mdOMNIXIE
Nixie driver board to enable easy inclusion of a Nixie tube into projects. One common driver board to support a wide range of Nixie INdicator Tubes. I love modularity!
Initial sketches, ideas, original project intent was just a nixie clock. But I hated the feeling of desigingn a nixie clock with the nixie driver circuitry as single use for just a clock, when really you should be able to drive a nixie tube anywehere you'd like for displaying numbers. So that's where this inspiration came from
ALSO cnlohr's cnixxie. Particularly his MCU of choice ch32v003 and the accompanying library ch32v003fun and rv003usb inspired the digitally controlled flyback he uses in his design. Really in hopes of learning some skills he demonstrated in his youtube vide.
OMNIXIE is omni beause all of its OMNIXIE_HATs share a common hardware interface to the nixie driver board. Since nixie tubes wildly vary in their footprint, its nice to share a common hardware connection between them all thats what makes it omni.
The real guts is the ddriver board. Should be minimal in size such that it doesnt add any more difficult in creating some case for the nixie tube. Should be relatively efficient like 90% efficiency on the flyback onverter Should be programmable There should be a software package that comes with the hardware that could easily spin up different functionality
The default program should allow the user of the board to immediatly get the devices to display a synchronized clock. Via some qwiic connectors. Might have to be a custom i2c interface.
A flyback seemed to be the most suitable approach because of the smallest amount of parts needed for it.
WORK IN PROGRESS.
Parts
64| Qty | Value | Footprint | References |
|---|---|---|---|
| 15 | 5005 | TestPoint:TestPoint_Keystone_5005-5009_Compact | +3V3, +3V3, D-, D+, GND, RIS1, SCL, SDA, TP6, TP8, TP11, TP12, TP13, TP14, TP18 |
| 12 | BSS123 | OMNIXIE:SOT-23-3-NO_SILK | Q0, Q1, Q2, Q3, Q4, Q5, Q6, Q7, Q8, Q9, Q10, Q11 |
| 3 | 1uF | Capacitor_SMD:C_0805_2012Metric | C3, C4, C5 |
| 2 | 1k | Resistor_SMD:R_0805_2012Metric | R11, R12 |
| 2 | 30K | Resistor_SMD:R_0805_2012Metric | R10, R16 |
| 2 | 47 | Resistor_SMD:R_0805_2012Metric | R8, R9 |
| 2 | 5.1k | Resistor_SMD:R_0805_2012Metric | R13, R14 |
| 2 | GREEN | LED_SMD:LED_0603_1608Metric | +5V, D3 |
| 2 | SM04B-SRSS-TB | Connector_JST:JST_SH_SM04B-SRSS-TB_1x04-1MP_P1.00mm_Horizontal | J2, J3 |
| 1 | 0.22uF | Capacitor_SMD:C_1812_4532Metric_Pad1.57x3.40mm_HandSolder | C2 |
| 1 | 1.5k | Resistor_SMD:R_0805_2012Metric | R15 |
| 1 | 100k | Resistor_SMD:R_0805_2012Metric | R7 |
| 1 | 10m | Resistor_SMD:R_0603_1608Metric | R5 |
| 1 | 10m | Resistor_SMD:R_0603_1608Metric_Pad0.98x0.95mm_HandSolder | R3 |
| 1 | 10uF | Capacitor_SMD:C_0805_2012Metric | C1 |
| 1 | 15k | Resistor_SMD:R_2010_5025Metric | R6 |
| 1 | ATB322515-0110 | OMNIXIE:ATB322515 | T1 |
| 1 | CH32V003F4U6 | Package_DFN_QFN:QFN-20-1EP_3x3mm_P0.4mm_EP1.65x1.65mm | U1 |
| 1 | Conn_01x02 | Connector_PinHeader_2.54mm:PinHeader_1x03_P2.54mm_Vertical | J6 |
| 1 | Conn_01x04 | Connector_PinHeader_2.54mm:PinHeader_1x04_P2.54mm_Vertical | J5 |
| 1 | Conn_01x10 | Connector_PinHeader_2.54mm:PinHeader_1x10_P2.54mm_Vertical | J1 |
| 1 | Conn_02x08_Counter_Clockwise | Connector_PinHeader_2.54mm:PinHeader_2x08_P2.54mm_Vertical | J7 |
| 1 | IL-WX-16S-VF-B-E1000E | OMNIXIE:IL-WX-16S-VF-B-E1000E-SOCKET | J8 |
| 1 | JUMPER | Resistor_SMD:R_0805_2012Metric | R17 |
| 1 | PI4IOE5V6416ZDEX | OMNIXIE:PI4IOE5V6416ZDEX-TQFN24 | U3 |
| 1 | SK3200AFL-TP | OMNIXIE:SK3200AFL | D1 |
| 1 | SMT_THERM_JMP | Jumper:SolderJumper-2_P1.3mm_Bridged_RoundedPad1.0x1.5mm | JP4 |
| 1 | STN1NK60ZL | OMNIXIE:SOT-223-MiddlePinDrain | Q12 |
| 1 | TH_THERM_JMP | Jumper:SolderJumper-2_P1.3mm_Open_RoundedPad1.0x1.5mm | JP5 |
| 1 | USB4105-GF-A | Connector_USB:USB_C_Receptacle_GCT_USB4105-xx-A_16P_TopMnt_Horizontal | J4 |
| 1 | XC6206P332MR | OMNIXIE:SOT-23-3-NO_SILK | U4 |
More from NA-varez/OMNIXIE
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Omnixie v1
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Nixie driver board to enable easy inclusion of a Nixie tube into projects. One common driver board to support a wide range of Nixie Indicator Tubes
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OmnixieHAT v0 2
NA-varez/OMNIXIE
Nixie driver board to enable easy inclusion of a Nixie tube into projects. One common driver board to support a wide range of Nixie Indicator Tubes
11 partsMIT
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Questions
How big is the Omnixie v0 2 PCB?
It measures 62.3 × 71.5 mm and has 2 copper layers, 2.92 mm thick.
What parts does the Omnixie v0 2 use?
64 parts, built around the CH32V003F4U6, PI4IOE5V6416ZDEX, XC6206P332MR and BSS123. The full list of its parts is on this page, with links to each part's symbol and footprint where PCBKit's library has them.
Where can I download the Omnixie v0 2 KiCad files?
From the NA-varez/OMNIXIE repository on GitHub, at the commit this page was made from: the board is kicad_projects/omnixie_v0.2/omnixie_v0_2.kicad_pcb and its schematic kicad_projects/omnixie-archive-1-12-2026/IN_12_omnixie_hat_v1.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the Omnixie v0 2 design in my own project?
Its repository publishes it under the MIT licence: you may reuse it on that licence's terms (keep the author's notice, and for a copyleft licence share your changes alike).