I call this "The Time Machine". It can display time, temperature, humidity,. It can synchronize to a universal timebase thru a wifi connection. It took about 6 months to build and code the project. I used two Microchip Pic microprocessors and code written in assembler language. It uses a calendar/clock chip, VFD tubes, high voltage tube drivers, switching regulator power supply, sensirion sht15 temperature/humidity sensor, a light detector for day or night modes, various 74xx chips. The plastic case came from a model car display which I cut down to size, then built the wooden base to follow the beveled corners. I also made one with an art deco painted base in turquoise.