Step 24: Anode and Cathode connectors
The ArduiNIX connects to your nixie tubes through these terminals. The cathodes connect to the numeral plates 0 through 9, and the anode terminals connect to the anode pin of your nixie tube. ALWAYS use a resistor between the anode terminal and the anode pin of your nixie tube. This is required. The value of the resister varies depending on your tubes, but 10K works well to start with.