Flip clocks: they were cool long before Bill Murray was slapping one repeatedly in Groundhog Day, they were cool in 1993, and they’re still cool now. If you can’t find one on the secondhand market, ...

Many of the clocks we feature here on Hackaday are entirely built from scratch, or perhaps reuse an unusual display type. But sometimes, an old clock is just perfect as it is, and only needs a bit of ...