Arduino Microcontroller Workshop UMBC Institute of Electrical and Electronics Engineers Arduino UMBC IEEE Sekar Kulandaivel sekark1@umbc.edu Week 2: Communication with Processing Technical Skills Series Presentation April 10th, 2014

Processing Download: https://processing.org/download/?processing Why Processing? Visual feedback Alternative method of communication Opens doors for a variety of projects

Important Arduino Functions int val, time; void setup() { … } void loop() { … } Serial.begin(9600); Serial.print(“Hello”); Serial.println(val); delay(1000); pinMode(8, INPUT); pinMode(9, OUTPUT); val = digitalRead(8); digitalWrite(9, out); val = analogRead(A0); analogWrite(9, out); time = millis(); map(var, testLow, testHigh, mapLow, mapHigh);

const int piezoPin = A4; const int photoPin = A5; int incoming, piezoValue, photoValue; void setup() { Serial.begin(9600); while (!Serial) { // do nothing } establishContact();

void loop() { if (Serial. available() > 0) { incoming = Serial void loop() { if (Serial.available() > 0) { incoming = Serial.read(); piezoValue = analogRead(piezoPin) / 4; delay(10); photoValue = analogRead(photoPin) / 4; Serial.write(piezoValue); Serial.write(photoValue); } void establishContact() { while (Serial.available() <= 0) { Serial.print('X'); delay(300);

import processing. serial import processing.serial.*; Serial port; int bgcolor, fgcolor; int[] serialInput = new int[2]; int serialCount = 0; int xpos, ypos, size; boolean contact = false; void setup() { size(400, 400); noStroke(); xpos = 200; ypos = 200; size = 20; String arduino = Serial.list()[0]; port = new Serial(this, arduino, 9600); }

void draw() { background(bgcolor); fill(fgcolor); ellipse(xpos, ypos, size, size); }

void serialEvent(Serial port) { int incoming = port void serialEvent(Serial port) { int incoming = port.read(); if (contact == false) { if (incoming == 'X') { port.clear(); contact = true; port.write('X'); } } else { serialInput[serialCount] = incoming; serialCount++; if (serialCount > 1) { size = 100 + serialInput[0]; fgcolor = serialInput[1]; println(size + "\t" + fgcolor); serialCount = 0;

Piezoelectric Sensor Analog Resistors: 1MΩ

Photoresistor and Potentiometer

Goals for Today Create a photoresistor array. Create a virtual RGB LED. Create a program that responds to sound. Any more ideas?