Nixie Clock controlled by I²C.
Project consist from 2 parts:
Once creating PCB, you can control your Nixie Clock by any I²C device. Here you can find software to control Nixie Clock by different types I²C devices.
Hardware part consist from 2 parts:
Custom PCB contains all required drivers and Nixie Tubes, in other words - your clock.
Project within Schematic and PCB is located here
Schematic
PCB
Any device that has I²C support (usually has GPIO). You can use any SBC like Raspberry Pi, Banana Pi and others or use single-bord microcontroller like Arduino, or even use your own developed board within microcontroller for I²C communication.
If you use SBC that has OS running on, e.g. Linux, and has I²C - you can use software located here on GitHub. You have to upload it into your chosen I²C device, build it and run it. Using custom I²C device - will require to write your own code in order to control clock via I²C.
For other documentation, please refer to Documentation