Back in 1978, the world was a bit different. There was no Raspberry Pi, no Internet, and not even an ESP32 to build projects with. And rather than order electronics kits from Tindie or Adafruit, [Dr.

Flip digit clocks are a prized piece of consumer electrical ephemera, providing as they do a digital display without significant electronics. Making your own flip digit display involves some drudgery ...

Normally, since watches are for knowing time, easy to understand is the best, but some seem to focus on design. I can not grasp the moment when I saw a binary clock, but I want about one at home.