Nixie wristwatch

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Dmitry Shevchenko

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Jan 23, 2019, 10:28:44 AM1/23/19
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Nixie wristwatch.
Based on KF155ID1 (SO-16).
Circuit powered by 3.7V accumulator.
USB-mini charge.

Regards from Russia.
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Kevin A.

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Jan 23, 2019, 1:36:57 PM1/23/19
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Nice work. K155ID1 is a very large chip however.

Check out the microchip hv5523.

Very small high voltage serial to parallel converter (qfn-44 package). 32 high voltage outputs. 

You can try making a watch with this, very small using the same drive technique (shift register) 

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Дмитрий Шевченко

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Jan 23, 2019, 3:30:48 PM1/23/19
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Yes. K155ID1 is very large, because DIP-16.
But my chip KF155ID1 is smaller, because SO-16 package.
https://www.ebay.com/itm/192786210553

ср, 23 янв. 2019 г. в 21:36, Kevin A. <ka...@scarletmail.rutgers.edu>:
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David Forbes

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Jan 23, 2019, 7:07:19 PM1/23/19
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Nice watch. Do you have pictures of the circuit boards to share with us?


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Дмитрий Шевченко

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Jan 23, 2019, 7:55:32 PM1/23/19
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I use this circuit for base and make with some modifications.
http://labkit.ru/html/clock?id=479
I replaced PIC to Atmega.
I replaced MBTA42 transistors and 10k resistors to 2 IC KF155ID1.
And some pins directed to control led light.

чт, 24 янв. 2019 г. в 03:07, David Forbes <nixie...@gmail.com>:
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Dmitry Shevchenko

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Apr 10, 2019, 10:34:28 AM4/10/19
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Some video about this wristwatch:
https://www.youtube.com/watch?v=NUyCjmatdbg

среда, 23 января 2019 г., 18:28:44 UTC+3 пользователь Dmitry Shevchenko написал:

Дмитрий Шевченко

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Apr 10, 2019, 10:34:28 AM4/10/19
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Some video about this wristwatch:
https://www.youtube.com/watch?v=NUyCjmatdbg

чт, 24 янв. 2019 г. в 03:55, Дмитрий Шевченко <mikron.z...@gmail.com>:
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