Thax has been busy on improving his open source nixie clock. He made first version of it some time ago but found few things that needed to be improved. So here it is a second version of “Warm Tube Clock”.
Clock is run by Atmega328 microcontroller. But to make it more precise and easy to manage timekeeping is done by DS3231 RTC IC. It also has ability to measure temperature which is also included in feature list.