2 layers44.5 × 72.7 mm
OSO SWAT C1-jig
joeycastillo/Sensor-Watch
A board replacement for the classic Casio F-91W wristwatch
28 parts2.1k
2 layers150 × 60 mm
Project files
dzastsed/Celeb-61CD61/CD66 nixie clock, also a redesign of https://github.com/dzastsed/CD61-CD66-nixie-clock-v1/
- Size
- 150 × 60 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 28
- Nets
- 86
- Pads
- 191
- Tracks, vias
- 506, 37
- Pours
- 1
- Routed
- Yes
- KiCad
- KiCad 8.0 (file 20240108)
- Created
- 29 Feb 2024
- Updated
- 10 Jun 2026
Overview
Project files is an open-source printed circuit board by dzastsed, from the dzastsed/Celeb-61 repository on GitHub. It is a 2-layer board of 150 × 60 mm with 28 parts on 86 nets, routed with 506 tracks and 37 vias.
Its parts include 10 ICs, 6 capacitors, 4 resistors, 1 connector and 1 switch. It belongs with the lEDs and displays boards of this library.
README
README.mdCeleb-61
a nod towards Celeb-17 nickname of Makise Kurisu
Working beta version with 2025-05 board design. No more bodges!
DISCLAIMER
This design is still a prototype, stuff may break and/or change. You've been warned.
New features:
-
usb-c to ttl adapter (optional)
-
usb-c power supply (optional)
-
better layout
-
mounting screw holes
Preview pics
Bottom
Top
Top, artwork edition (legacy design in old project and gerbers (do not use) folder)
Schematic
Firmware
Regular clock, and clock with scrambling code implemented are included firmware folder.
-
Regular firmware: Just does the clock function, and nothing more. It probably isn't even up to date with current board design. Not recommended to use.
-
Scramlin' firmware: Does character scramble every hour (after 30 seconds pass at 31 minute mark) to prevent cathode poisoning. Up to date. Use this firmware.
Known issues
None so far?
Setup guide
refer to installation.md
Parts list
refer to parts.md
Future improvements
ESP32 support - for wi-fi clock sync etc.
Diode on TTL module power rail to prevent powering it from secondary USB port (or complete removal of 2ndary USB port as this board can be powered by TTL module just fine).
Different board versions for different tube footprints.
A physical switch of some sort to turn the clock off while it's still plugged in
More covering for high voltage parts
Credits
TheMobas0 - for help on making the scramble code
Greatsccott! - original board design
Elli - for drawing Makise Kurisu art
Parts
28| Qty | Value | Footprint | References |
|---|---|---|---|
| 4 | 100nF | 20240226_214038:CAPACITOR-SMD-1206 | C3, C4, C5, C6 |
| 4 | 20k | 20240226_214038:AXIAL-0.4 | R1, R2, R3, R4 |
| 4 | K155ID1/SN74141 | 20240226_214038:DIP16 | U1, U2, U3, U4 |
| 4 | Nixie_Tube_CD66_Tomas5054 | 20240226_214038:NEC_NIXIE_TUBE_CD66A_TOMAS5054 | U8, U9, U10, U11 |
| 2 | 10uF | 20240226_214038:CAPACITOR-SMD-1206 | C1, C2 |
| 1 | 170V | 20240226_214038:SOLDERPAD | 170V |
| 1 | 5V | 20240226_214038:SOLDERPAD | 5V |
| 1 | ARDUINO PRO-MINI COPY | Library:ARDUINOPROMINI_ARDUINO_PRO_MINI | U6 |
| 1 | GND | 20240226_214038:SOLDERPAD | GND |
| 1 | GND_HV | 20240226_214038:SOLDERPAD | GND_HV |
| 1 | LOGO | LOGO | G*** |
| 1 | SW_Push | Button_Switch_THT:SW_PUSH_6mm | SW1 |
| 1 | USB_C_Plug_USB2.0 | 20240226_214038:USBC breakout | P1 |
| 1 | USB_TO_TTL_CH340E | 20240226_214038:USB_TO_TTL_CH340E | U7 |
| 1 | ZS_042/DS3231 | 20240226_214038:ZS-042-DS3231 | CLK1 |
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Questions
How big is the Project files PCB?
It measures 150 × 60 mm and has 2 copper layers, 1.6 mm thick.
What parts does the Project files use?
28 parts. 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 Project files KiCad files?
From the dzastsed/Celeb-61 repository on GitHub, at the commit this page was made from: the board is project files/20240226_214038.kicad_pcb and its schematic project files/20240226_214038.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the Project files design in my own project?
Its repository states no licence, so its author keeps all rights: ask dzastsed before reusing the design.