MAKE presents: The LED
Take a tour through the world of the light-emitting diode and learn - who invented it, how to use it, and how to make your own.audio & video by Collin Cunnin...
![MAKE presents: The LED](https://i.ytimg.com/vi/P3PDLsJQcGI/hqdefault.jpg)
Take a tour through the world of the light-emitting diode and learn - who invented it, how to use it, and how to make your own.audio & video by Collin Cunnin...