ECE FINAL PRESENTATION ADRIENNE PREEYA AISLING SHEA Adrienne

ECE FINAL PRESENTATION ADRIENNE PREEYA AISLING SHEA

Adrienne Coulter Aisling Casey Preeya D’Mello Shea Cassidy (& Kangaroo Friend)

SENSOR CHARACTERIZATION • Sonar Sensor • Uses “echoes” of sound waves to locate an object’s distance • The closer the distance, the larger the reading on the handy board

SONAR SENSOR CODE void main() { int range=0; printf("n Sensor Sample Program"); while(!start_button()); // Press Start Button while(1) // Continue infinitely { sleep(0. 5); range = sonar(); printf("n. Output is %d", range); } }

SENSOR CHARACTERIZATION Sonar Reading 1200 1000 800 600 400 200 0 0 5 10 15 20 25 30 35 40 45

SENSOR CHARACTERIZATION • Light Sensor • Records the darkness/lightness of on object or scale, and converts them into readings • Complete black was 100% on the scale, while complete white was 0% • Low values indicate bright light, while larger values indicate low light

LIGHT SENSOR CODE void main() { int sensor 1=0; printf("n Light Sensor Sample"); while(!start_button()); // Press Start Button while(1) { sleep(0. 5); // Continue infinitely sensor 1=analog(4); // Reads the signal coming from analog port 4. printf ("n Light. Sensor%d", sensor 1); } }

SENSOR CHARACTERIZATION Light Reading 200 180 160 140 120 100 80 60 40 20 0 0 1 2 3 4 5 6 7 8

CIRCUITS • To begin our work with circuits, we calculated theoretical values of voltage drops, current and resistance in various prompted circuits • Ohm’s Law: V=IR • We distinguished parallel and series circuits • Resistance in series: Req= R 1 + R 2 • Resistance in parallel: 1/Req=1/R 1+1/R 2

DC CIRCUITS • Materials for DC: breadboard, resistors, a diode, a DC Power Supply, and a multimeter. • The breadboard was the main component of the circuit. • Resistors and diodes were used to build parallel and series circuits. • Once the circuit was built we hooked up a DC Power Supply to the bread board using wires. This sent current throughout the bread board. • We used wires to connect a multimeter to our breadboard. The multimeter measured the voltage across each resistor, current through the circuit and resistance.

AC CIRCUITS • Materials for AC: BNC cable, a banana, 2 mini-grabbers, a function generator for AC current and an oscilloscope. • We connected the circuit to the function generator for an AC power source supply, and analyzed the graph of the current on the oscilloscope. • We determined the frequency and amplitude (voltage) for the various circuits.

INSTRUMENTATION DC Power Supply Multimeter Supplies power to a circuit. Between 25 V and 25 V Measures current, voltage and resistance through a circuit

INSTRUMENTATION Oscilloscope: measures and graph how voltage changes with time

MULTISIM • In this lab we further explored the mechanisms of circuitry. We built virtual circuits that we could test without having to physically build them. We used a virtual multimeter to measure the voltage and current through each circuit. We then used a virtual oscilliscope to see how the voltage changed over the course of time.

AM RADIO LAB • Materials: printed circuit board, resistors, capacitors, semiconductors, & other parts • We soldered in order to connect the wires in the circuit. This required a soldering iron, solder, and dexterity. • We picked up a news station and a latin music station.

AM RADIO LAB

ARDUINO LAB WEEK 1 • In this lab, we built a circuit and became familiar Arduino to program an LED to light up with varying levels of brightness and colors.

LED CODE int REDPin = 3; // RED pin of the LED to PWM pin 3 int GREENPin = 5; // GREEN pin of the LED to PWM pin 5 if (brightness <= 0 || brightness >= 255) direction of the fading // reverse the { int BLUEPin = 6; increment = -increment; // BLUE pin of the LED to PWM pin 6 } int brightness = 0; // LED brightness = constrain(brightness, 0, 255); //function int increment = 5; // brightness increment (changing this will change the which limits a value to a range smoothness of transitions) analog. Write(REDPin, brightness); void setup() //analog. Write(GREENPin, brightness); { pin. Mode(REDPin, OUTPUT); analog. Write(BLUEPin, brightness); pin. Mode(GREENPin, OUTPUT); //blue pin value refresh pin. Mode(BLUEPin, OUTPUT); //blue pin mode definition } effect void loop() } { brightness = brightness + increment; // increment brightness for next loop iteration delay(2); // wait for 20 milliseconds to see the dimming

LED

ARDUINO LAB WEEK 2 • We used our programming skills from the previous part to program a motor to rotate based on its light sensitivity.

MOTOR CODE int servo. Pin = 4; //variable to store the servo pin number int pulse = 700; //variable to store the pulse duration void setup() { pin. Mode(servo. Pin, OUTPUT); //set the servo pin as an output Serial. begin(9600); //set serial data transfer rate } void loop() { digital. Write(servo. Pin, HIGH); //send 5 V to the servo delay. Microseconds(pulse); //for pulse microseconds digital. Write(servo. Pin, LOW); //send 0 V to the servo delay(20); } //for 20 milliseconds

• Worked as a team to execute these projects CONCLUSION ECE 1020 Section 30 Aisling Casey Shea Cassidy Adrienne Coulter Preeya D’Mello • Consulted with one another when faced with a complication or problem