Arduino Controlled Traffic Lights for Kids Without Delay()

Arduino Nano R3

5 mm LED: Green

Hot glue gun (generic)

Slide Switch

Soldering iron (generic)

5 mm LED: Yellow

Plier, Long Nose

Rotary potentiometer (generic)

Resistor 100 ohm

5 mm LED: Red

<h3 >Arduino Traffic Light Controller for Kids Toys</h3><p >Our kids love playing cars and trains, so we decided to make them a cool set of traffic lights out of cardboard and Arduino. </p><p >We think these traffic lights are pretty awesome because of a few reasons:</p><ul ><li >We didn't use the 'delay()' function as a timer.</li><li >We included a dial to change the green light time.</li><li >Compact Design running on 6AA batteries.</li><li >Made from recycled materials.</li><li >Very low cost to make. </li></ul><p >In this post, we go into depth about how we made the traffic light controller, and explain our unique code and why we don't use the delay function. You can also download our Arduino Sketch so you can make your own traffic lights at home.</p><p ><a href="https://www.stemmayhem.com/arduino-controlled-traffic-lights-for-kids/">Full in Depth Guide &amp; Tutorial for Making Traffic Lights &gt;&gt;</a></p><figure><img src=https://projects.arduinocontent.cc/7575dc23-b5b1-4542-86a3-b071603c4cb2.jpg /><figcaption>Traffic Lights Project Overview</figcaption></figure><h3 >Layout of Our Arduino Traffic Lights</h3><p >Here is the breadboard layout for this project. It really is quite simple. The only thing we didn't include was the on/off switch (sorry). It is just an inline switch on the positive side of the battery.</p><figure><img src=https://projects.arduinocontent.cc/b68739f4-394a-4f7a-8dc7-604e650a4117.jpg /><figcaption>Traffic Light Arduino Project Layout</figcaption></figure><p ></p>

Layout of Traffic Lights

Kids Traffic Lights Without delay()

Arduino Controlled Traffic Lights for Kids Without Delay()

The correct way to make traffic lights for a 4-way intersection.