Week 11 – Serial Communication

Exercise 1

Demo:

• • Arduino code on Github

Implementation:

• Arduino
  • I began by setting up a simple circuit with an ultrasonic sensor to control the circle’s position in p5 using my hand’s distance from the sensor.
  • For the code, I used the same distance calculating code I used in one of my previous assignments that used the ultrasonic sensor. The only thing I changed is

    void loop(){
    //...
      Serial.println(mappedDistance);
    //...
    }

    where I used println instead of just print, so that a new line is printed with every write to the serial monitor.

• P5.js:
  • I used the same connection logic from the class example using the “click to connect” button. Then, I read from the serial monitor and convert the string it reads into a value. Then, I draw the ellipse and insert the x-value we read from Arduino into its appropriate place in the parameters.

Exercise 2

Demo:

• • Arduino code on Github

Implementation:

For this exercise, I decided to use a slider on p5 to control the brightness of an LED on my Arduino.

• Arduino:
  • I started by setting up a simple circuit with one LED light connected to pin 9