# Introduction

104

Published

## Introduction: Introduction

The following information is a single lesson in a larger project. Find more great projects here.

Project Overview:

Through this project, students put their fundamental knowledge of electronics into practice. In the City of Lights Infrastructure, the basic concepts of conductivity, resistance, voltage, and switches are reimagined as circuit design tools. Conductivity is used to build a pressure-sensitive roadway, voltage is used to create a contour map that lights up, and resistance is used to limit current through the street lamps.

## Step 1: Introduction

A city's "infrastructure" is the most fundamental feature of a city that makes it work. This includes things like roads, bridges, and of course the electrical grid.

These structures allow people to get from one place to another and also have access to resources - like electricity - that make it easier to live, work, and communicate with other people.

In this project, you will create a model of a city infrastructure including:

- Houses connected by electrical transmission lines

- A street with light posts that light up when a car drives by

- A traffic light controlled by a switch

- A golf course that represents voltage levels

We'll even show you how to make a starry night back drop with LED stars!

1. Continue to the next step.

## Step 2: A Circuit's Infrastructure

In order to create the city model, you will use the most fundamental parts of a circuit. Like the basic parts of a city, you can think of these circuit components as being a circuit's infrastructure!

- Conductive traces (made with Circuit Scribe)

- Wires - Batteries

- Lights (LEDs)

- Resistors

- Switches

- Jumpers (we use stickers)

Some of these components are shown in the Workplane, to the right.

You can try connecting them with the virtual conductive ink pen to practice using the Circuit Scribe editor.

1. Press the "next" button below to continue.

## Step 3: Materials Needed

The 3D models that you create in this project can be made using classroom craft supplies -OR- by designing models in Tinkercad and 3D printing the designs.

Electronics:

- Circuit Scribe conductive ink pen

- Component modules including 2 pin components, batteries, and RGB LED

- 7" jumper wires with sockets and pins at opposite ends

- Jumper stickers

- Large dome LEDs

- Flexible insulated wires, tinned at both ends Craft materials:

- Standard printer paper - Colored construction paper or cardstock

- Aluminum foil

- Flexible drinking straws

- Paper clips

- A toy car

- Colored pencils

- Colored tape (like blue duct tape)

- Scissors Optional materials and equipment:

- 3D Printer

- ABS or PLA plastic filament

- Black and white felt

- 3V coin cell batteries (Some materials are shown below.)

1. Press the "next" button below to continue.

## Step 4: Let's Build a City!

We'll provide instructions for each structure in the city starting with a Circuit Scribe lesson and then moving on to a Tinkercad or video tutorial showing you how to create a physical model around that circuit.

Throughout this course you can follow the instructions exactly, or you can add elements to your circuits. For example, try adding a switch inside each house on the street so their LEDs can be turned on and off independently.

Now let's go build a city infrastructure!

1. Go back to the main menu and continue to the next lesson.

## Recommendations

• ### Large Motors Class

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• ### Oil Contest

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