3 Examples

Process:

For this assignment, we had to finish the three in-class examples that connect p5js and Arduino. In the beginning, I thought I understood the code and the connection but then I realized that I did not fully understand it. So I decided to review it line by line and try to understand the communication between Arduino and P5js.

Then Yupu and I decided to work together on these three examples we divided them so that he worked on the first one I worked on the second and we both worked on the third together. We helped each other debug the code and figure out how to implement it together. Honestly, this process of debugging helped me understand the communication between the two (P5js and Arduino) better.

Example 1: Circle Moving

// Week 11.2 Serial port - Light sensor, ball and light example 1 


int leftLedPin = 7;
int rightLedPin = 4;


void setup() {
 // Start serial communication so we can send data
 // over the USB connection to our p5js sketch
 Serial.begin(9600);


 // We'll use the builtin LED as a status output.
 // We can't use the serial monitor since the serial connection is
 // used to communicate to p5js and only one application on the computer
 // can use a serial port at once.
 pinMode(LED_BUILTIN, OUTPUT);


 // Outputs on these pins
 pinMode(leftLedPin, OUTPUT);
 pinMode(rightLedPin, OUTPUT);


 // Blink them so we can check the wiring
 digitalWrite(leftLedPin, HIGH);
 digitalWrite(rightLedPin, HIGH);
 delay(200);
 digitalWrite(leftLedPin, LOW);
 digitalWrite(rightLedPin, LOW);



 // start the handshake
  while (Serial.available() <= 0) {
    digitalWrite(LED_BUILTIN, HIGH);  // on/blink while waiting for serial data
      Serial.println("0,0");            // send a starting message
    delay(300);                       // wait 1/3 second
    digitalWrite(LED_BUILTIN, LOW);
    delay(50);
  }
}


void loop() {
 // wait for data from p5 before doing something
 while (Serial.available()) {
   digitalWrite(LED_BUILTIN, HIGH);  // led on while receiving data


   if (Serial.read() == '\n') {


     int sensor = analogRead(A1);  //potentiometer
     Serial.println(sensor);
   }
 }
 digitalWrite(LED_BUILTIN, LOW);
}

Example 2: LED Brightness

// Week 11.2 Example LED brightness


int leftLedPin = 6;

void setup() {
  // Start serial communication so we can send data
  // over the USB connection to our p5js sketch
  Serial.begin(9600);


  // We'll use the builtin LED as a status output.
  // We can't use the serial monitor since the serial connection is
  // used to communicate to p5js and only one application on the computer
  // can use a serial port at once.
  pinMode(LED_BUILTIN, OUTPUT);

  // Outputs on these pins
  pinMode(leftLedPin, OUTPUT);

  // start the handshake
  while (Serial.available() <= 0) {
    digitalWrite(LED_BUILTIN, HIGH);  // on/blink while waiting for serial data
    Serial.println("0,0");            // send a starting message
    delay(200);                       // wait 1/3 second
    digitalWrite(LED_BUILTIN, LOW);
    delay(200);
  }
}


void loop() {
  // wait for data from p5 before doing something
  while (Serial.available()) {
    digitalWrite(LED_BUILTIN, HIGH);  // led on while receiving data

    int brightness = Serial.parseInt();
    analogWrite(leftLedPin, brightness);
    if (Serial.read() == '\n') {
      Serial.println("0,0");
    }
  }
  digitalWrite(LED_BUILTIN, LOW);
}

Example 3:  Gravity, Ball, and LED

// week 11 example 3 sensor analg and digital light and abouncing ball 

int leftLedPin = 7;
int rightLedPin = 4;


void setup() {
 // Start serial communication so we can send data
 // over the USB connection to our p5js sketch
 Serial.begin(9600);


 // We'll use the builtin LED as a status output.
 // We can't use the serial monitor since the serial connection is
 // used to communicate to p5js and only one application on the computer
 // can use a serial port at once.
 pinMode(LED_BUILTIN, OUTPUT);


 // Outputs on these pins
 pinMode(leftLedPin, OUTPUT);
 pinMode(rightLedPin, OUTPUT);


 // Blink them so we can check the wiring
 digitalWrite(leftLedPin, HIGH);
 digitalWrite(rightLedPin, HIGH);
 delay(200);
 digitalWrite(leftLedPin, LOW);
 digitalWrite(rightLedPin, LOW);






 // start the handshake
  while (Serial.available() <= 0) {
    digitalWrite(LED_BUILTIN, HIGH);  // on/blink while waiting for serial data
    Serial.println("0,0");            // send a starting message
    delay(300);                       // wait 1/3 second
    digitalWrite(LED_BUILTIN, LOW);
    delay(50);
  }
}


void loop() {
 // wait for data from p5 before doing something
 while (Serial.available()) {
   digitalWrite(LED_BUILTIN, HIGH);  // led on while receiving data


   int LED_STATE = Serial.parseInt();
   //int right = Serial.parseInt();
   if (Serial.read() == '\n') {
     digitalWrite(rightLedPin, LED_STATE);
     int sensor2 = analogRead(A1);
     delay(5);
     Serial.print(sensor2);
     Serial.print(',');
     Serial.println('Y');
   }
 }
 digitalWrite(LED_BUILTIN, LOW);
}