Nixie driver chip 74141 is difficult to purchase, so i decided to design a circuit with Optocoupler only. Fortunately, it works! After this experiment, i will try to make NIXIE CLOCK

Watch the video for full instruction

Part list to make the project:

1. Arduino UNO https://amzn.to/2P58O7s

2. Nixie tube 6 pcs https://amzn.to/3aHyJvX

3. Opto coupler chip TLP627

4. DC step-up module from 12VDC to 390VDC https://amzn.to/30kpdK9

5. Breadboard https://amzn.to/2uCrnsW

1. Circuit design

As matrix design, we only need 12 output from Arduino to control 20 lights of 2 nixie tube.
By quick turn on and off 2 nixie tube, we will see two number as permanent view. The sequence turning on/off is by Arduino Code

2. Arduino code

Code and circuit can be downloaded here
http://bit.ly/38KY1ri