Team 4

For The Trees

OVERVIEW

OVERVIEW

Discover how producing renewable energy and driving an electric vehicle can help combat climate change.

SOLAR POWER

Hold a magnetic Sun against a solar-paneled roof to activate a Hall Effect Sensor and fill the Solar Power Meter.

WIND POWER

Blow on the wind turbine to create a voltage across the motor; a tune plays and increases in pitch as the wind speeds up. Ten seconds of spinning makes the turbine self-sustaining.

EV CHARGING

Is climate change mythical? Answer the question correctly by plugging into the corresponding outlet, and your Tesla starts rolling.

A 1-minute hourglass keeps you on task and restarts the machine if time runs out.

A 3-column array of LEDs indicates your progress for each activity.

A charging battery light indicates your overall progress.

DRAWINGS

DRAWING

SCHEMATICS

SOLAR PANEL

Screen Shot 2018-12-07 at 12.44.17 PM.pn

BATTERY DISPLAY

A pair of shift registers stores the information regarding which battery panels should be illuminated, and in what colors.

WIND TURBINE

Screen Shot 2018-12-03 at 3.38.27 PM.png

LEAF DETECTOR

An IR LED aimed at a phototranistor within a trans-resistive circuit causes changes in the circuit's output when a LEAF interrupts the LED beam. Completion of all tasks causes a Tiva signal to the servo that drives a marker into the LEAF.

EV OUTLET

Closing the "true fact" switch lights a green LED and causes a Tiva output to the DC motor that drives the Tesla. Closing the "falsehood" switch lights a red LED.

HOURGLASS

A PWM signal from the Tiva causes the servo to rotate 180 degress when a LEAF is first detected.

SPEAKER SYSTEM

A PWM signal from the Tiva cause the speaker to play different tones and tunes for each event.

LED PROGRESS ARRAY

In a setup similar to the Battery Display, two shift registers output signals to the progress-indicating LED array.

PSEUDOCODE/CODE LISTING

CODE

Pseudocode for the TREE can be found here.

Header files:

Source files:

BILL OF MATERIALS

BILL OF MATERIALS

GEMS OF WISDOM

Define specific goals thoroughly and early to avoid problems later on.
Label wires to indicate what Tiva pin they belong to, so when things get unplugged, you remember where they are supposed to go.
Keep the work station clean and organized to minimize chances of important parts disappearing.
Search for stuff in the classroom before buying everything.
Breadboards are very unreliable, hot glue is your friend.
If you are not familiar with soldering, having a helping hand would make life much easier.
Don’t mess up with version control, SourceTree is not always bug-free.

GEMS OF WISDOM