I found my answer 
The Pic must be hidden behind the switches
"The SmartNixie is a sophisticated I2C display module with an onboard uProcessor and high voltage display driver that may be ordered with or without a Nixie display tube"
I found my answer
The Pic must be hidden behind the switches
"The SmartNixie is a sophisticated I2C display module with an onboard uProcessor and high voltage display driver that may be ordered with or without a Nixie display tube"