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.
| 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