In this article, I discuss making a synchronization circuit for the antique “Cifra 5” (Digit5) flip clock model, so that remote “receiver” clocks work even when disconnected from a central “signaler” clock and two-wire bus.
ANT+ is a wireless protocol used in sports devices. I use this technology, along with Nordic Semiconductor’s nRF52832 microcontroller (MCU), to build a bicycle tail light. The light is activated by a Garmin GPSMAP 64st navigator, with its existing integrated features repurposed.