The ESP8266 is well known as an incredibly small ... To get up and running you really only need to create three distinct voltage levels and have timing control to about 1us.

Project boxes will only get you so far ... Take for example this ESP8266 clock by [ZaNgAbY] that’s housed in a glass pasta jar. With the addition of some window tint film for the LED display ...

an ESP8266 is even cheaper. And when I say cheaper, I'm talking about picking up one of these microcontrollers for $5 or even less. It's an incredibly cost-efficient device, with the only downside ...