This is a design for a six tube nixie clock and uses R|Z568M tubes by Dalibor Farny. As it is, at the moment, the design should be regarded as a prototype. The clock is designed to run 'stand-alone' without any internet connection for time synchronisation. There is a real time clock module on the board along with a battery backup. All processing of time data is carried out by an ATMega328 chip and the board has the appropriate header pins to allow in-circuit programming of this microcontroller.