ECE 1020

Group Members Samantha Starr BME Arduino Arianna Weinshel BME Sensors, Circuits Eden Woldemichael CE AM Radio Taylor Brooke EE Instrumentation, Multism

Sensor Characterization This lab worked with the Handy Board Used light sensor scales And established sensor ranges Used two different sensors: analog and digital sensors Digital sensors return either a 0 or 1value Analog sensors return a range between 0  255 high values from the analog sensor indicate close proximity, roughly four inches Light sensors that gave a low values indicated bright light and vice versa

Sample Code for the Sonar Sensor void main( ) { int range=0; printf(“\n Sensor Sample Program”);//handyboard will print Sensor Sample Program while(!start_button());//waits until the start button is pressed while(1)//program will run continuously forever { Sleep(0.5);//waits.5 second between each reading of sensor Range=sonar(); Printf(“\Output is %d”, range);//handyboard will print output value of sensor } }//end of program

Circuits Lab Focused on Series and Parallel circuits First we begins with a DC voltage source Worked with resistors and diodes, which has a voltage drop of.7volts The ground and voltage source of 0 are placed on the bottom Equation used to calculate Ohm’s Law  V=IR Series in Parallel: 1/Req=1/R 1 +1/R 2 Resistors in series: Req=R 1 +R 2 Use: Bread board, DC power supply, multimeter, & oscilloscope

Multisim Lab Purpose: test circuits without having to physically build them placed components on the workspace Put wires in place, found voltage source and ground source, labeled resistors, diodes, and AC circuits Began simulation to see if the circuit worked accordingly

Example of Workspace

AM Radio Lab & Soldering Use: AM radio Kit Types of Modulation: -Analog Modulation – AM,FM -Digital Modulation Model: AM-780 AM Broadcast Frequencies: 535kHz – 1605kHz Assembling the PCB by soldering on resistors, capacitors, semiconductors, etc.

Arduino Lab With arduino we light LEDs that contained three colors (Red Blue and Green) Used Ardunio language which is very similar to C programming language To power an LED, we need an analog voltage (in this case, approximately >2.5 V) Arduino has PWM built in for voltages between 0V and 5V 5V = a PWM value of 255 0V = a PWM value of 0 You can use any value between 0 and 255 for PWM on an Arduino

Arduino Lab

int REDPin = 3; int GREENPin = 5; Int BLUEPin = 6; int brightness = 0; int increment = 5 void setup() {pinMode(REDPin, OUTPUT); pinMode(GREENPin, OUTPUT); pinMode(BLUEPin, OUTPUT);} void loop() {brightness = brightness + increment; if (brightness = 255 {increment = -increment;} brightness = constrain(brightness, 0, 255); analogWrite(REDPin, brightness); analogWrite(GREENPin, brightness);

Instrumentation Oscilloscope: The purpose of an oscilloscope is to measure a voltage that changes with time and show it in a graphical format Used these when working on circuits Could discover the frequency amplitude and peak-to-peak voltage from the output Also used DC Power Supply and Function Generator Function Generator: produces waves of different shapes, amplitudes and frequencies. DCpower:produces constant voltage or current signals. This DC Power supply is capable of generating voltages from -25V to 25V.

Oscilloscope

DC Power Supply

Conclusion Circuits Soldering Sensors/motors Arduino