Nixie clock sets time from internet, encased in concrete

Chankster built a Nixie clock that uses the NTP protocol to set the time over an internet connection. For a final touch, it was encased in concrete.

Time is synchronized using the network time protocol. An ATmega keeps the time, controls the nixie tubes, and connects to the internet via the popular ENC28J60 Ethernet IC.

Design files are available in the forum.