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Nixe tube inspired clock

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MrKillerShaunBa/KillerClock

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904cde9 · · Aug 15, 2025

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KillerClock

This is a Nixie tube-inspired clock made using LED filaments. These filaments are strings of micro-LEDs which imitate the look of a tungsten filament. It uses ESP-32, which syncs time with an NTP server using the on-board wifi. It uses a MAX7219 ic to run the 7 segments. Everything is powered using a 5V 2A wall adaptor. There are also Glass test tubes to match the look of a Nixie tube.

I got the inspiration when I chanced upon a Nixie tube clock, which I found very interesting. Since Nixie tubes aren't available reliably in India, I made one using LEDs.

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Product Quantity (MOQ) Source Total Price(INR)(includes tax) Price($)(Converted) Link
MAX7219 8-Digit LED Display Driver IC 2 eBhoot 225 2.60 here
DC Power Jack Female 2 eBhoot 14.6 0.17 here
ESP32 Development Board 1 eBhoot 377.6 4.37 here
10uF 25V Electrolytic Capacitor 3 eBhoot 5.31 0.061 here
0.1uF Ceramic Capacitor 5 eBhoot 5.3 0.061 here
10K Ohm Resistor 10 eBhoot 5.9 0.068 here
5v-2A DC adaptor 1 eBhoot 123.9 1.43 here
Ebhoot Shipping ~ eBhoot 90 1.04 ~
40×2 Pin Male Berg Strip 2 Sharvi 28.91 0.33 here
40x1 Pin Male Berg Strip 1 Sharvi 6.8 0.079 here
40x1 Pin Female Berg Strip 1 Sharvi 9.7 0.11 here
2x4 pin female berg strip 5 Sharvi 49.7 0.57 here
24 Pin IC Base 5 Sharvi 29.3 0.34 here
M2x6mm Allen bolt 10 Sharvi 112.7 1.30 here
M2x20mm Allen Bolt 10 Sharvi 163.5 1.89 here
M2X3mm Brass Heat Insert 10 Sharvi 33.7 0.39 here
Sharvi Shipping ~ Sharvi 75 0.87 ~
LED Filament 3V 26mm 11*3 Adafruit ~ 54.34 here (Not available in this size anywhere in India; Inclues tax and shipping)
38x200mm test tubes 12 Amazon 990 11.45 here
10x75mm test tubes 6 Amazon 179 2.04 here
PCB 5 JLC PCB 20 Used coupon and includes shipping
Case 1 Print Legion ~5 Only Shipping

Total Cost- $115-120

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