But there’s hidden meaning to that light. Some of the blinks are longer than others; this flower is using Morse Code.

With the size of electronic parts and batteries these days, very small items are obviously becoming more and more viable. [Yann Guidon] has made some awesome pieces of LED jewelry using a minimal n… ...

Using high-power LEDs, the FITSAT-1 fires intense bursts of light like an overcranked flashgun. These bursts will spell out Morse code messages aimed at the ground.

The robotic Japanese cargo vessel en route to the space station carries a set of tiny amateur radio satellites, including one that will write Morse code messages in the sky.

communication channels Why and how Morse code has survived for 175 years Morse code works whether flashing a spotlight or blinking your eyes – or even tapping on a smartphone touchscreen.