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, ...

Arduino enthusiasts, makers and hobbyists looking for inspiration for their next project might be interested in a unique Arduino clock aptly named the Time Slider. It might not be the quietest clock ...

Controlling the signals sent to the slave clocks and keeping them synchronized are the main tasks of this master clock. The National Time synchronization protocol is supported by the firmware in the ...