IN-17 portable clock

Simple , Small ,Portable, Nixie Clock

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This is the second of my Nixie Clock (IV-18 isn't a Nixie by the way)
Originally I want to build a Nixie watch , but It's too crowd to fit 4 digits
So I turn to something like pocket watch.




3.Countdown timer

4.Temp&Humdity Display

5.Some Nixie demo (Random Number generator,Sequence Number,Wave )


1. four IN-17

2.Atmega328 (Arduino UNO) powered

3.DS3231M RTC

4.on Board USB to Serial IC (CP2102)

5.Light Sensor for auto light adjusting

6.Four light adjustable LED

7.Nixie light adjustable

8.USB charge Dock

9.Power by 200mAh Li-poly

  • 4 × IN-17 nixie tube
  • 1 × Atmega328pa
  • 1 × DS3231M Clock and Timer ICs / Real-Time Clocks
  • 1 × CR2012 Battery holder
  • 1 × AAT3110 chargepump IC Power Management ICs / Power Supply Support

View all 17 components

  • USB Charge Dock

    Will Whang06/05/2015 at 13:46 0 comments

  • Temperature Humidity Sensor added

    Will Whang04/10/2015 at 11:52 0 comments

    I have reserved for two type of temp&humid sensor IC on PCB ,one is SHT2X and Ti's HDC1000

    originally I wanna to use HDC1000, but I find out that I place the IC too close to the mount hole,

    so I turn to HTU21D

    The sensor worked, but it is slowly heated by other parts on board, I'm not sure which component nearby is generating heat. But the final result is that sensor will heated to about 32 degree C after one hour, and stay at that temperature.

    The sensor's placement is already near the drill hole for battery switch, but still influence by something on PCB, so maybe I'll just drill another one at the back, and put the sensor inside then pull out the I2C bus to main board to eliminate possible heating component.

    22 degree C / 67% related humidity.


    1.ADD FM

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Bende.r wrote 10/21/2023 at 17:48 point

a very beautiful project. I will be very grateful to you if you send the scheme and firmware to my mail exclusively for personal use!! i`m big fan of nixies)!!

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lang1_luis wrote 12/06/2022 at 18:00 point

Could you sell me the board please?

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ddsaqw wrote 05/28/2018 at 03:14 point

Very nice build! 

Can you share the schematic of the hardware design?

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The Big One wrote 06/05/2015 at 16:09 point

Very nice build!  I am a huge fan of wooden enclosures.

On a side note, where do you source your nixie tubes from?  I would be interested in playing with them, but never know a good place to get them from.


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Will Whang wrote 06/07/2015 at 14:21 point


I bought on Ebay , lot of Nixie tube there.

mostly IN-Series , like IN-14 or IN-18 (biggest) ,

this project is using IN-17 ,which is the smallest in the Series 

(Because I can't afford the biggest one for six tube haha)

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The Big One wrote 06/07/2015 at 14:31 point

Cool, thanks for the info!

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