This is for the NE555 "timer" contest
You probably came across electronic dice do-it-yourself kits many times. The design of those has remained virtually unchanged for decades. All of them are based on exactly two ICs: A NE555 and a CD4017.
Two examples found on the internet
The CD4017 is a counter that is used to cycle through the states. The counter output is converted to the die pattern using a combination of diodes, resistors and transistors. An oscillator based on a NE555 generates counting pulses when the die is activated.
Isn't that a bit limiting? The NE555 surely can do more than being a sidekick to the CD4017. In this project we will bring the NE555 to it's full potential and implement the entire dice using only NE555s. Along the way I also found a nice new job for the CD4017 as a two phase clock generator.
This is a companion project to the NE555 microprocessors to actually test the logic style in real hardware.