I drilled out the welds on the top of the lantern and removed the top and then cut out the front vents. I fitted an Arduino microprocessor programmed to decode the DCF77 Atomic clock signal from Germany. I fitted an LED display panel to monitor the clock pulses that drive slave clocks. The time is auto set and is displayed on a White on Blue LCD display and also a Skeletal clock movement.
A hinged wooden top and feet and also a new handle were then added.
Back up batteries are fitted in the top of the case.
The program code is available on my web site and can be modified to suite by downloading free software from the Arduino site.
Full details and HD video on my web site here.