How to implement Emergency Push Buttons to a 4 Way Traffic Light

[PerryBebbington]

These might help you:

Multi-tasking the Arduino - Part 1

Using millis for timing

Demonstration for several things at the same time

Finite state machine tutorial

Timer counter state change toggle FSM - all at once

There is a recurring theme of people new to Arduino and/or microcontrollers not grasping the concept of putting what I call ‘building blocks’ of code together to achieve some goal. These short sketches are an attempt to offer some examples showing how small pieces can be used in concert to build up larger, more complex sketches. Thanks to @PerryBebbington and @ballscrewbob for support and input. You made it better. The examples will illustrate: • Doing ‘several things at once’ • pitfalls of …