Week8 HW: Sensor & Serial Input

[Photocell + Button]

// test button

int ledPin[] = {2, 3, 4, 5, 6, 7, 8, 9};
int upSound[] = {100, 200, 300, 400, 500, 600, 700, 800};
int downSound[] = {1915, 1700, 1519, 1432, 1275, 1136, 1014, 956};
int speaker = 10;
int button1 = 12;
int button2 = 11;
int lightPin = 0;

void setup(){
Serial.begin(9600);
pinMode(speaker, OUTPUT);
for(int i =0; i<=7; i++){
pinMode(ledPin[i], OUTPUT);
}
pinMode(speaker, OUTPUT);
pinMode(button1, INPUT);
}

void loop(){
int lightLevel = analogRead(lightPin);
lightLevel = map(lightLevel, 0, 1023, 0, 10);
Serial.println(lightLevel);

int buttonState1 = digitalRead(button1);
int buttonState2 = digitalRead(button2);

if(buttonState1 == LOW){
for(int i = 0; i<= 7; i++){
analogWrite(ledPin[i], lightLevel);
if(lightLevel>= 1 && lightLevel < 3){
digitalWrite(ledPin[i], HIGH);
tone(speaker, upSound[i]);
delay(20);
digitalWrite(ledPin[i], LOW);
}else if(lightLevel >= 3 && lightLevel < 4){
digitalWrite(ledPin[i], HIGH);
tone(speaker, upSound[i]);
delay(200);
digitalWrite(ledPin[i], LOW);
}else if(lightLevel >= 4 && lightLevel <= 5){
digitalWrite(ledPin[i], HIGH);
tone(speaker, upSound[i]);
delay(800);
digitalWrite(ledPin[i], LOW);
}
}
}else if(buttonState1 == HIGH){
noTone(speaker);
}

if(buttonState2 == LOW){

if(lightLevel>= 0 && lightLevel < 2){
for(int i = 7; i>= 0; i–){
analogWrite(ledPin[i], lightLevel);
digitalWrite(ledPin[i], HIGH);
tone(speaker, downSound[i]);
delay(20);
digitalWrite(ledPin[i], LOW);
}
}else if(lightLevel >=2 && lightLevel<4){
for(int i = 7; i>= 0; i–){
analogWrite(ledPin[i], lightLevel);
digitalWrite(ledPin[i], HIGH);
tone(speaker, downSound[i]);
delay(300);
digitalWrite(ledPin[i], LOW);
}
}else if(lightLevel >=4 && lightLevel <=5){
for(int i = 7; i>= 0; i–){
analogWrite(ledPin[i], lightLevel);
digitalWrite(ledPin[i], HIGH);
tone(speaker, downSound[i]);
delay(1000);
digitalWrite(ledPin[i], LOW);
}
}

}else if(buttonState2 == HIGH){
noTone(speaker);
}
}

//void up(){
// for(int i = 0; i<= 7; i++){
// digitalWrite(ledPin[i], HIGH);
// tone(speaker, upSound[i]);
// delay(200);
// digitalWrite(ledPin[i], LOW);
// delay(200);
// }
//
//}
//
//void down(){
// for(int i = 7; i>= 0; i–){
// digitalWrite(ledPin[i], HIGH);
// tone(speaker, downSound[i]);
// delay(200);
// }
// for(int i =0; i <= 7; i++){
// digitalWrite(ledPin[i], LOW);
// }
// }

[Serail Input]

I definitely gave Soohyun a credit! Her code is more flexible. You can create your own melody by typing letters.

I had a little problem about “empty character constant” so I goologed the answer: ” means empty.

Here is my reference:http://www.codeproject.com/Questions/154469/Help-me-with-empty-character-constant-error

int ledPin[] = {6, 7, 8, 9};
int buzzerPin = 10;
int incomingByte = 0;

void setup(){
Serial.begin(9600);
for(int i = 0; i < 4; i++){
pinMode(ledPin[i], OUTPUT);
pinMode(buzzerPin, OUTPUT);
}
}

void loop(){
if (Serial.available() > 0) {
incomingByte = Serial.read();
if(incomingByte == ”){ //” means empty
delay(500);
}else if(incomingByte == ‘c’){
digitalWrite(ledPin[0], HIGH);
tone(buzzerPin, 262);
delay(300);
noTone(buzzerPin);
digitalWrite(ledPin[0], LOW);
}else if(incomingByte == ‘d’){
digitalWrite(ledPin[1], HIGH);
tone(buzzerPin, 294);
delay(300);
noTone(buzzerPin);
digitalWrite(ledPin[1], LOW);
}else if(incomingByte == ‘e’){
digitalWrite(ledPin[2], HIGH);
tone(buzzerPin, 330);
delay(300);
noTone(buzzerPin);
digitalWrite(ledPin[2], LOW);
}else if(incomingByte == ‘f’){
digitalWrite(ledPin[3], HIGH);
tone(buzzerPin, 349);
delay(300);
noTone(buzzerPin);
digitalWrite(ledPin[3], LOW);
}
}
}

arduino hw2-part2 (keyboard controlled leds)

video:

code:

int led1= 13;
int led2= 12;
int led3= 11;
int led4= 10;

void setup() {
// opens serial port, sets data rate to 9600 bps (bits per second)
pinMode(led1,OUTPUT);
pinMode(led2,OUTPUT);
pinMode(led3,OUTPUT);
pinMode(led4,OUTPUT);
Serial.begin(9600);
}
void loop() {
// read the sensor:
if (Serial.available() > 0) {
int inByte = Serial.read();
// do something different depending on the character received.
switch (inByte) {
case ‘r’:
digitalWrite(led1,HIGH);
delay(100);
digitalWrite(led1,LOW);
delay(100);
Serial.println(“red light”);
break;
case ‘y’:
digitalWrite(led2,HIGH);
delay(100);
digitalWrite(led2,LOW);
delay(100);
Serial.println(“yellow light”);
break;
case ‘b’:
digitalWrite(led3,HIGH);
delay(100);
digitalWrite(led3,LOW);
delay(100);
Serial.println(“blue light”);
break;
case ‘g’:
digitalWrite(led4,HIGH);
delay(100);
digitalWrite(led4,LOW);
delay(100);
Serial.println(“green light”);
break;
}
}
}

reference: class examples

arduino hw1-part2 (2 switches-2 leds)

video:

code:

const int NbrLEDs = 3;
const int ledPins[] = {13,12};
const int analogInPin = 0;
const int wait = 30;

const boolean LED_ON = LOW;
const boolean LED_OFF = HIGH;

int sensorValue = 0;
int ledLevel = 0;

void setup() {
for (int led = 0; led < NbrLEDs; led++)
{
pinMode(ledPins[led], OUTPUT);
}
}

void loop() {
sensorValue = analogRead(analogInPin);
ledLevel = map(sensorValue, 0, 700, 0, NbrLEDs);
for (int led = 0; led < NbrLEDs; led++)
{
if (led < ledLevel ) {
digitalWrite(ledPins[led], LED_ON);
}
else {
digitalWrite(ledPins[led], LED_OFF);
}
}
}

reference: http://www.instructables.com/id/Arduino-Light-Sensitive-Bar-Graph/?ALLSTEPS

 

Sandra hw – LED using sensor

https://vimeo.com/78112136

 

Week 10: Working Class Session

I’ve gotten a few emails from people who need help with their midterm projects. Given that we do not have too much time to divide into 14 sections, I think instead of going over motors in Arduino, we should use the full amount of class time to work on midterm projects.

Please bring your prototypes!

Play Songs using Node

I used Node.js to control a pieza buzzer to play 2 different songs- The Star Wars Death March and the Zelda Theme song.  The code is similar to the Node controlled LED, only I created separate functions with each song’s melody and called to them in the draw loop with if statements that were fed by Node.  It seems to be working within Terminal, as you can see in the video, because the buzzer is cycling between 1 and 2, but the sound does not appear. I can’t figure out why.

Video

 

Code:

//code https://gist.github.com/1804108 20121125 @ 1339

//led for visualization (use 13 for built-in led)
int ledPin = 13;

//speaker connected to one of the pwm ports
int speakerPin = 8;

//tone frequencies http://home.(m-eye-t).bme.hu/~bako/tonecalc/tonecalc.htm
//notes for death march
#define c 261
#define d 294
#define e 329
#define f 349
#define g 391
#define gS 415
#define a 440
#define aS 455
#define b 466
#define cH 523
#define cSH 554
#define dH 587
#define dSH 622
#define eH 659
#define fH 698
#define fSH 740
#define gH 784
#define gSH 830
#define aH 880
//notes for zelda
#define NOTE_B0 31
#define NOTE_C1 33
#define NOTE_CS1 35
#define NOTE_D1 37
#define NOTE_DS1 39
#define NOTE_E1 41
#define NOTE_F1 44
#define NOTE_FS1 46
#define NOTE_G1 49
#define NOTE_GS1 52
#define NOTE_A1 55
#define NOTE_AS1 58
#define NOTE_B1 62
#define NOTE_C2 65
#define NOTE_CS2 69
#define NOTE_D2 73
#define NOTE_DS2 78
#define NOTE_E2 82
#define NOTE_F2 87
#define NOTE_FS2 93
#define NOTE_G2 98
#define NOTE_GS2 104
#define NOTE_A2 110
#define NOTE_AS2 117
#define NOTE_B2 123
#define NOTE_C3 131
#define NOTE_CS3 139
#define NOTE_D3 147
#define NOTE_DS3 156
#define NOTE_E3 165
#define NOTE_F3 175
#define NOTE_FS3 185
#define NOTE_G3 196
#define NOTE_GS3 208
#define NOTE_A3 220
#define NOTE_AS3 233
#define NOTE_B3 247
#define NOTE_C4 262
#define NOTE_CS4 277
#define NOTE_D4 294
#define NOTE_DS4 311
#define NOTE_E4 330
#define NOTE_F4 349
#define NOTE_FS4 370
#define NOTE_G4 392
#define NOTE_GS4 415
#define NOTE_A4 440
#define NOTE_AS4 466
#define NOTE_B4 494
#define NOTE_C5 523
#define NOTE_CS5 554
#define NOTE_D5 587
#define NOTE_DS5 622
#define NOTE_E5 659
#define NOTE_F5 698
#define NOTE_FS5 740
#define NOTE_G5 784
#define NOTE_GS5 831
#define NOTE_A5 880
#define NOTE_AS5 932
#define NOTE_B5 988
#define NOTE_C6 1047
#define NOTE_CS6 1109
#define NOTE_D6 1175
#define NOTE_DS6 1245
#define NOTE_E6 1319
#define NOTE_F6 1397
#define NOTE_FS6 1480
#define NOTE_G6 1568
#define NOTE_GS6 1661
#define NOTE_A6 1760
#define NOTE_AS6 1865
#define NOTE_B6 1976
#define NOTE_C7 2093
#define NOTE_CS7 2217
#define NOTE_D7 2349
#define NOTE_DS7 2489
#define NOTE_E7 2637
#define NOTE_F7 2794
#define NOTE_FS7 2960
#define NOTE_G7 3136
#define NOTE_GS7 3322
#define NOTE_A7 3520
#define NOTE_AS7 3729
#define NOTE_B7 3951
#define NOTE_C8 4186
#define NOTE_CS8 4435
#define NOTE_D8 4699
#define NOTE_DS8 4978

void setup()
{
// sets the ledPin to be an output
pinMode(ledPin, OUTPUT);
//sets the speakerPin to be an output
pinMode(speakerPin, OUTPUT);
}

// run over and over again

//wait for incomoing data from the serial port to start. if incoming data has value ‘1’, play march(),
//if incoming data has value ‘2’, play zelda()
void loop(){
if (Serial.available() > 0){
char inputData = Serial.read();
if(inputData==’1′){
march();
delay(500);
}
if(inputData==’2′){
zelda();
delay(500);
}

}
}

 

void beep (unsigned char speakerPin, int frequencyInHertz, long timeInMilliseconds){
//use led to visualize the notes being played
digitalWrite(ledPin, HIGH);

int x;
long delayAmount = (long)(1000000/frequencyInHertz);
long loopTime = (long)((timeInMilliseconds*1000)/(delayAmount*2));
for (x=0;x<loopTime;x++)
{
digitalWrite(speakerPin,HIGH);
delayMicroseconds(delayAmount);
digitalWrite(speakerPin,LOW);
delayMicroseconds(delayAmount);
}

//set led back to low
digitalWrite(ledPin, LOW);

//delay to separate notes
delay(20);
}

void march()
{
//Sheet music http://www.musicnotes.com/sheetmusic/mtd.asp?ppn=MN0016254
//time in ms
//500 ms for a quart note
beep(speakerPin, a, 500);
beep(speakerPin, a, 500);
beep(speakerPin, a, 500);
beep(speakerPin, f, 350);
beep(speakerPin, cH, 150);

beep(speakerPin, a, 500);
beep(speakerPin, f, 350);
beep(speakerPin, cH, 150);
beep(speakerPin, a, 1000);

beep(speakerPin, eH, 500);
beep(speakerPin, eH, 500);
beep(speakerPin, eH, 500);
beep(speakerPin, fH, 350);
beep(speakerPin, cH, 150);

beep(speakerPin, gS, 500);
beep(speakerPin, f, 350);
beep(speakerPin, cH, 150);
beep(speakerPin, a, 1000);

beep(speakerPin, aH, 500);
beep(speakerPin, a, 350);
beep(speakerPin, a, 150);
beep(speakerPin, aH, 500);
beep(speakerPin, gSH, 250);
beep(speakerPin, gH, 250);

beep(speakerPin, fSH, 125);
beep(speakerPin, fH, 125);
beep(speakerPin, fSH, 250);
delay(250);
beep(speakerPin, aS, 250);
beep(speakerPin, dSH, 500);
beep(speakerPin, dH, 250);
beep(speakerPin, cSH, 250);

beep(speakerPin, cH, 125);
beep(speakerPin, b, 125);
beep(speakerPin, cH, 250);
delay(250);
beep(speakerPin, f, 125);
beep(speakerPin, gS, 500);
beep(speakerPin, f, 375);
beep(speakerPin, a, 125);

beep(speakerPin, cH, 500);
beep(speakerPin, a, 375);
beep(speakerPin, cH, 125);
beep(speakerPin, eH, 1000);

beep(speakerPin, aH, 500);
beep(speakerPin, a, 350);
beep(speakerPin, a, 150);
beep(speakerPin, aH, 500);
beep(speakerPin, gSH, 250);
beep(speakerPin, gH, 250);

beep(speakerPin, fSH, 125);
beep(speakerPin, fH, 125);
beep(speakerPin, fSH, 250);
delay(250);
beep(speakerPin, aS, 250);
beep(speakerPin, dSH, 500);
beep(speakerPin, dH, 250);
beep(speakerPin, cSH, 250);

beep(speakerPin, cH, 125);
beep(speakerPin, b, 125);
beep(speakerPin, cH, 250);
delay(250);
beep(speakerPin, f, 250);
beep(speakerPin, gS, 500);
beep(speakerPin, f, 375);
beep(speakerPin, cH, 125);

beep(speakerPin, a, 500);
beep(speakerPin, f, 375);
beep(speakerPin, c, 125);
beep(speakerPin, a, 1000);
}

void zelda(){
beep(speakerPin, NOTE_D5, 100); // beep( -PIN OF SPEAKER-, -THE NOTE WANTING TO BE PLAYED-, -DURATION OF THE NOTE IN MILISECONDS- )
delay(80);
beep(speakerPin, NOTE_F5, 100);
delay(80);
beep(speakerPin, NOTE_D6, 200);
delay(250);

beep(speakerPin, NOTE_D5, 100);
delay(80);
beep(speakerPin, NOTE_F5, 100);
delay(80);
beep(speakerPin, NOTE_D6, 200);
delay(250);

beep(speakerPin, NOTE_E6, 200);
delay(200);
beep(speakerPin, NOTE_F6, 100);
delay(100);
beep(speakerPin, NOTE_E6, 100);
delay(80);
beep(speakerPin, NOTE_F6, 100);
delay(80);
beep(speakerPin, NOTE_E6, 100);
delay(80);
beep(speakerPin, NOTE_C6, 100);
delay(80);
beep(speakerPin, NOTE_A5, 100);
delay(300);

beep(speakerPin, NOTE_A5, 200);
delay(100);
beep(speakerPin, NOTE_D5, 200);
delay(100);
beep(speakerPin, NOTE_F5, 100);
delay(100);
beep(speakerPin, NOTE_G5, 100);
delay(100);
beep(speakerPin, NOTE_A5, 100);
delay(500);

beep(speakerPin, NOTE_A5, 200);
delay(100);
beep(speakerPin, NOTE_D5, 200);
delay(100);
beep(speakerPin, NOTE_F5, 100);
delay(100);
beep(speakerPin, NOTE_G5, 100);
delay(100);
beep(speakerPin, NOTE_E5, 100);
delay(500);

beep(speakerPin, NOTE_D5, 100);
delay(80);
beep(speakerPin, NOTE_F5, 100);
delay(80);
beep(speakerPin, NOTE_D6, 200);
delay(250);

beep(speakerPin, NOTE_D5, 100);
delay(80);
beep(speakerPin, NOTE_F5, 100);
delay(80);
beep(speakerPin, NOTE_D6, 200);
delay(250);

beep(speakerPin, NOTE_E6, 200);
delay(200);
beep(speakerPin, NOTE_F6, 100);
delay(100);
beep(speakerPin, NOTE_E6, 100);
delay(80);
beep(speakerPin, NOTE_F6, 100);
delay(80);
beep(speakerPin, NOTE_E6, 100);
delay(80);
beep(speakerPin, NOTE_C6, 100);
delay(80);
beep(speakerPin, NOTE_A5, 100);
delay(300);

beep(speakerPin, NOTE_A5, 200);
delay(100);
beep(speakerPin, NOTE_D5, 200);
delay(100);
beep(speakerPin, NOTE_F5, 100);
delay(100);
beep(speakerPin, NOTE_G5, 100);
delay(100);
beep(speakerPin, NOTE_A5, 300);
delay(100);
beep(speakerPin, NOTE_A5, 200);
delay(100);
beep(speakerPin, NOTE_D5, 300);
delay(2000);

}

 

JS:

//activate serial port module
var serialport = require(“serialport”);
var SerialPort = serialport.SerialPort;

//set buzz=1 as initial command
var buzz = 1;
// change serial port of Arduino
var myserial = new SerialPort(“/dev/tty.usbserial-A601EGW0”,{
baudrate:9600
});

//open event from serial port module
myserial.on(‘open’,function(){
//timer set at 2000
setInterval(testBuzzController,2000);
});

function testBuzzController(){
console.log(‘send command for buzz=’ + buzz);
//write data into serial port
myserial.write(buzz.toString());
//increase value of buzzer
buzz++;
//if value is more than 3, set value back to buzz=1
if(buzz>2)
buzz = 1;
}

//catches errors from serial port
myserial.on(‘error’, (function (err) {
console.log(‘Error = ‘ + err);
}));

 

 

 

Arduino HW2-part 1 (led’s controlled by photocell)

video:

code:

const int NbrLEDs = 3;
const int ledPins[] = {13,12};
const int analogInPin = 0;
const int wait = 30;

const boolean LED_ON = LOW;
const boolean LED_OFF = HIGH;

int sensorValue = 0;
int ledLevel = 0;

void setup() {
for (int led = 0; led < NbrLEDs; led++)
{
pinMode(ledPins[led], OUTPUT);
}
}

void loop() {
sensorValue = analogRead(analogInPin);
ledLevel = map(sensorValue, 0, 700, 0, NbrLEDs);
for (int led = 0; led < NbrLEDs; led++)
{
if (led < ledLevel ) {
digitalWrite(ledPins[led], LED_ON);
}
else {
digitalWrite(ledPins[led], LED_OFF);
}
}
}

reference:

http://www.instructables.com/id/Arduino-Light-Sensitive-Bar-Graph/?ALLSTEPS

Arduino HW 2- Photo cell and Serial Control LED/Buzzer

Video: LED with Photocell

Code:
int photocellPin = 0;
int photocellReading;
int LED = 11;
int brightness;

void setup(void) {

Serial.begin(9600);
}

void loop(void) {
photocellReading = analogRead(photocellPin);

Serial.print(“Analog reading = “);
Serial.println(photocellReading);

photocellReading = 1023 – photocellReading;

brightness = map(photocellReading, 0, 1023, 0, 255);
analogWrite(LED, brightness);

delay(10);
}

 

 

I created 5 LEDs that were controlled with ‘abcde’ and played a different tone from the buzzer when commanded.

Video: 5 LEDs play sounds through serial control

Code inspired from http://arduino.cc/en/Tutorial/SwitchCase2 and Arduino Week 8 Buzzer code

int pinBuzzer = 8;
int ledPin[]={2,3,4,5,6};\
int inByte=0;

void setup() {
Serial.begin(9600);
for(int i=0; i<5;i++){
pinMode(ledPin[i],OUTPUT);
pinMode(pinBuzzer,OUTPUT);
}
}

void loop() {

if (Serial.available() > 0) {
inByte = Serial.read();
if(inByte==’a’){
digitalWrite(ledPin[0], HIGH);
tone(pinBuzzer,500);
delay(200);
noTone(pinBuzzer);
digitalWrite(ledPin[0], LOW);
}else if(inByte==’b’){
digitalWrite(ledPin[1], HIGH);
tone(pinBuzzer,1000);
delay(200);
noTone(pinBuzzer);
digitalWrite(ledPin[1], LOW);
}else if(inByte==’c’){
digitalWrite(ledPin[2], HIGH);
tone(pinBuzzer,1500);
delay(200);
noTone(pinBuzzer);
digitalWrite(ledPin[2], LOW);
}else if(inByte==’d’){
digitalWrite(ledPin[3], HIGH);
tone(pinBuzzer,2000);
delay(200);
noTone(pinBuzzer);
digitalWrite(ledPin[3], LOW);
}else if(inByte==’e’){
digitalWrite(ledPin[4], HIGH);
tone(pinBuzzer,2500);
delay(200);
noTone(pinBuzzer);
digitalWrite(ledPin[4], LOW);
}

Serial.print(char(inByte));
}
}

Serial Connection/ Arduino / Node.js

So I attempted to create some kind of serial connection between an arduino (with a button/LED) and node.js using javascript. I tried a few different sample codes I found on the internet, but could not get anything to work. Here is the documentation for the one I spent the most time trying to get to work:

Arduino HW1- part 1(3 LEDs)

video:

https://vimeo.com/78031729

code:

int led = 13;
int led2 = 12;
int led3 = 11;

void setup() {
pinMode(led, OUTPUT);
pinMode(led2, OUTPUT);
pinMode(led3, OUTPUT);
}

void loop() {
digitalWrite(led, HIGH);
delay(100);
digitalWrite(led, LOW);
delay(100);
{digitalWrite(led2, HIGH);
delay(100);
digitalWrite(led2, LOW);
delay(100);}
{digitalWrite(led3, HIGH);
delay(100);
digitalWrite(led3, LOW);
delay(100);}
}

reference:

http://www.instructables.com/id/Multiple-Blinking-LED-on-the-Arduino/