Single digit Nixie clock driven by PIC16F84A
This IN-18 Nixie tube clock project utilizes the PIC16F84A microcontroller and displays hours and minutes on a single tube. The circuitry is simple and the author used salvaged parts from a disposable camera to construct the high voltage power supply required for the Nixie tube. The time is displayed in the single digit by periodically flashing the digits from tens of hours to minutes. A tact switch is also implemented to set the time. It has to be pushed when the digit you want to change is being displayed. The current display is increased by one each time the switch is pressed and cycle through 0-9.
Single digit nixie clock