Week 11 – Serial Communication – P5js

You will need the P5 Serial App: https://github.com/p5-serial/p5.serialcontrol/releases

Arduino wiring:

Arduino Code:

void setup() {
  Serial.begin(9600);
  pinMode(2, OUTPUT);
  pinMode(5, OUTPUT);
  while (Serial.available() <= 0) {
    Serial.println("0,0"); // send a starting message
    delay(300);              // wait 1/3 second
  }
}

void loop() {
  while (Serial.available() > 0) {
    // read the incoming byte:
   int inByte = Serial.read();
    switch (inByte) {
      case 0:
        digitalWrite(2, LOW);
        digitalWrite(5, LOW);
        break;
      case 1:
        digitalWrite(2, HIGH);
        break;
      case 2:
        digitalWrite(5, HIGH);
        break;
    }

    int sensorValue = analogRead(A0);
    Serial.print(sensorValue);
    Serial.print(",");
    sensorValue = analogRead(A1);
    Serial.print(sensorValue);
    Serial.println();
  }
}

P5js – Editor Code

Exercises:

1. make something that uses only one sensor  on arduino and makes the ellipse in processing move on the horizontal axis, in the middle of the screen, and nothing on arduino is controlled by processing
2. make something that controls the LED brightness from processing
3. take the gravity wind example below and make it so every time the ball bounces one led lights up and then turns off, and you can control the wind from one analog sensor

Gravity Wind (press space bar for new ball drop)

More Resources: https://itp.nyu.edu/physcomp/labs/#Asynchronous_Serial