For those following along at home, [WhisleyTangoHotel] provides a hand-drawn diagram ... code. Interestingly enough, in the past we’ve seen a single LED clock that didn’t use Morse code to ...

and [Bertus Kruger] has created a neat way to make lights blink wirelessly. He has a footprint in the middle of the board for soldering the castellated ESP8266 module, and an LED ring around it ...