2 layers110 × 50 mm
2 layers110 × 50 mm
Nixie back v3
iley/nixie-clockYet another nixie tube clock
- Size
- 110 × 50 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 26
- Nets
- 38
- Pads
- 128
- Tracks, vias
- 190, 25
- Pours
- 2
- Routed
- Yes
- KiCad
- KiCad 7 (file 20221018)
- Created
- 19 Oct 2019
- Updated
- 9 Mar 2026
Overview
Nixie back v3 is an open-source printed circuit board by iley, from the iley/nixie-clock repository on GitHub, published under the MIT licence. It is a 2-layer board of 110 × 50 mm with 26 parts on 38 nets, routed with 190 tracks and 25 vias.
It is built around the DS3231MZ/V+. Its parts include 6 resistors, 6 connectors, 3 capacitors, 2 ICs and 2 switches. It belongs with the lEDs and displays boards and the ESP32 boards of this library.
Main components
1README
README.mdYet another nixie clock
This repo contains hardware design files and firmware source code for a nixie tube clock.
The clock uses soviet IN-12 tubes and K155ID1 driver ICs.
Parts
26| Qty | Value | Footprint | References |
|---|---|---|---|
| 5 | 10K | Resistor_SMD:R_1206_3216Metric_Pad1.30x1.75mm_HandSolder | R1, R2, R3, R6, R7 |
| 2 | 0.1uF | Capacitor_SMD:C_1206_3216Metric_Pad1.33x1.80mm_HandSolder | C3, C4 |
| 1 | 1K | Resistor_SMD:R_1206_3216Metric_Pad1.30x1.75mm_HandSolder | R4 |
| 1 | 1uF | Capacitor_SMD:C_1206_3216Metric_Pad1.33x1.80mm_HandSolder | C1 |
| 1 | BAK | Battery:BatteryHolder_Keystone_103_1x20mm | BT1 |
| 1 | BOOT | Button_Switch_SMD:SW_Push_1P1T_XKB_TS-1187A | SW1 |
| 1 | BUTTONS | TerminalBlock:TerminalBlock_Altech_AK300-4_P5.00mm | J2 |
| 1 | CONN_LEFT | Connector_PinSocket_2.54mm:PinSocket_1x10_P2.54mm_Vertical | J5 |
| 1 | CONN_RIGHT | Connector_PinSocket_2.54mm:PinSocket_1x10_P2.54mm_Vertical | J6 |
| 1 | DS3231MZ | Package_SO:SOIC-8_3.9x4.9mm_P1.27mm | U1 |
| 1 | ESP32-WROOM-E | Espressif:ESP32-WROOM-32E | U2 |
| 1 | LED | TerminalBlock:TerminalBlock_Altech_AK300-2_P5.00mm | J3 |
| 1 | POWER | TerminalBlock:TerminalBlock_Altech_AK300-3_P5.00mm | J4 |
| 1 | RESET | Button_Switch_SMD:SW_Push_1P1T_XKB_TS-1187A | SW2 |
| 1 | UART | Connector_PinHeader_2.54mm:PinHeader_1x06_P2.54mm_Vertical | J1 |
| 1 | UART_VCC | Connector_PinHeader_2.54mm:PinHeader_1x02_P2.54mm_Vertical | JP1 |
The 21 most common of 26 parts.
Questions
How big is the Nixie back v3 PCB?
It measures 110 × 50 mm and has 2 copper layers, 1.6 mm thick.
What parts does the Nixie back v3 use?
26 parts, built around the DS3231MZ/V+. 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 Nixie back v3 KiCad files?
From the iley/nixie-clock repository on GitHub, at the commit this page was made from: the board is pcb/back_v3/nixie_back_v3.kicad_pcb and its schematic pcb/back/nixie_clock_back.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the Nixie back v3 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).
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