The Tunnel BookTools & materials for tunnel book:• 2 10x 24 centimeter pieces of card stock • 4 10x10 centimeter pieces of card stock • X-Acto knife • Awl • Glue stick • 10 x 10 centimeter pieces of vellum or parchment paper, images, text, etc. for contents of tunnel book

Tools & materials for Arduino circuitry: • Arduino• Four-pronged switch• 2 LEDs with pre-soldered wire leads• 220 OHM resistor (2)• 10 Kilohm resistor (1)• Male/Male jumper wire (7) • 2 LEDS with pre-soldered wire leads • 9V battery/ holder or 9V adapter.

Part One: Build Your Arduino CircuitTo get started with Arduino, you’ll need to access the Arduino web editor or download the Arduino software. For more details about getting started with Arduino, go to www.arduino.cc Click on Re-sources and go to Getting Started. From the Getting Started page, select the Arduino board type you are working with and follow the directions for setting up the board.

Once you’ve set up your board, build the circuit. Always be sure to unplug the Arduino board from its power source before you make changes to the circuitry.

These instructions focus on creating a temporary circuit with a solder-less breadboard. When working with the breadboard, the exact placement of wires into the breadboard typically doesn’t mat-ter—what matters is the relationship among various components. The instructions below refer to vertical and horizontal placement on the breadboard, with the horizontal being the rows parallel to the +/- and alphabet symbols.

Tunnel 1

The Tunnel Book1. Connect a red wire to to the 5V pin on the Arduino and put the other end into the positive vertical line on the breadboard. Connect a black wire to Ground (GND) on the Arduino and the neighboring negative line on the breadboard. (Note: The color of the wires doesn’t really matter but it’s helpful to consistently use red for Positive and black for Negative).

2. Place the switch/ button across the center gutter of the board. The bend in the legs of the switch should point to the center of the board. Note: The rest of the components will be placed on the same side of the breadboard as the 5V powers and GND wires.

3. Use a jumper wire to connect the button to Pin 2 on the Arduino. The breadboard end of the wire should be placed on the same horizontal line as one of the switch pins.

4. Use the 10Kohm resistor to connect power to one side of the switch. One end of the resistor should be placed in the same horizontal row as the previously placed Pin 2 wire. The other end of the resistor should be placed in the same vertical row as the Negative/ GND wire.

5. Place one end of another jumper wire on the same horizontal line as the switch’s other pin. Place the opposite end of the jumper wire on the same vertical line as the Positive/ 5V wire.

6. Now that you’ve set up the power and the switch, you’ll set up the writing for the two LED lights. Place the end of one jumper wire in Pin 5 on the Arduino board. Place the other end of the jumper wire on any horizontal row between column a-d. Place another jumper wire in Pin 4 and then to any horizontal row between column a-d.

7. Place a 220 ohm resistor adjacent to each jump wire that you just placed. One end of the resistor should be on the same vertical column as the jumper wire on the breadboard and the other end should be placed in the Negative/ GND column.

8. You’ll place the LED wires on the breadboard later.

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The Tunnel Book

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Part Two: Create Tunnel Book

1. Fold each 10 x 24 cm piece of card stock into an accordion. Begin with an approximately 3 cm fold width-wise and then fold the paper in alternating directions to the end. The final section will be smaller than the rest.

2. Place two of the 10 x 10 cm squares together and cut an opening in the center. You should have a mini-mum border of 2 cm on each side.

3. Place accordion sides so that they parallel each other—make sure that the valleys and hills of the folds match.

4. Glue the larger end folds to one of the solid squares. Place a second solid square over the top of the ends

5. Puncture holes into the square wherever you would like to place the LEDs.

6. Glue the open squares to the front folds in the same manner as the back squares.

7. Place one LED through each hole, with the leads extending through the back of the tunnel structure.

Part Three: Connect Tunnel Book & Arduino

1. Connect the LED leads to the breadboard. For one LED, connect the Positive lead to the same horizontal row as the Pin 4 jumper wire. Connect the Negative lead to the same horizontal row as the paired 220 ohm resistor. Follow the same pattern with the other LED for the Pin 5 lead.

2. Upload the following Sketch to your Arduino.

3. Once you’ve uploaded the Sketch, push the button to make sure that the LED lights work. If the lights don’t work, check each of your wires to make sure they are connected. The two LED lights will flash back and forth.

4. Add squares of vellum or other designs to the section of the tunnel book to complete

the project.

The Tunnel Book

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