Arduino: A Quick-Start Guide, 2nd Edition

Exercises

• Binary dice are all very well when you’re playing Monopoly with your geeky friends, but most people prefer more familiar dice. Try turning binary dice into decimal dice with seven LEDs. Arrange the LEDs like the eyes on regular dice.

• The 1kΩ resistors we used to protect our LEDs in this chapter are rather big. Read ​Resistors​, and replace them with smaller ones, for example 470Ω. Can you see the difference in brightness?

• LEDs can be used for more than displaying binary dice results. Provided you have enough LEDs, you can easily build other things, such as a binary clock.^[49] You already know enough about electronics and Arduino programming to build your own binary clock. Try it or think about other things you could display using ...