Get Your Project Started with Arduino Class 3: Arduino and Physical Computing June 11, 2014 Don Wilcher

Arduino and Physical Computing Topics What is Physical Computing? Make: Basic Arduino Book example Let’s Make a Tilt Sensing Servo Motor Controller!

What is Physical Computing? Definitions “The interaction between a human, an electronic circuit, and a sensor is physical computing.” [1] “Physical computing is about creating a conversation between the physical world and virtual world of the computer.” [2]

What is Physical Computing?... References [1] Learn Electronics with Arduino, Wilcher, D., Apress, 2012 [2] Physical Computing, Sullivan, D, and Igoe, T., Thomson Course Technology, 2004

Make:Basic Arduino book example

Let’s Build a Tilt Sensing Motor Controller Chapter 3. Tilt Sensing Servo Motor Controller In this chapter, we’ll build a gadget to easily detect object orientation using a tilt control switch to control a servo motor.

Tilt Sensing Motor Controller Block Diagram

Tilt Sensing Motor Controller Prototype

Tilt Sensing Motor Controller BOM Parts List Arduino microcontroller SW1: tilt control switch JI: servo motor R1: 1K ohm resistor (brown, black, red stripes) Pair of alligator test leads or equivalent Full-size clear breadboard

Tilt Sensing Motor Controller Fritzing Wiring Diagram

Tilt Sensing Motor Controller Circuit Schematic Diagram

Tilt Sensing Motor Controller Sketch /* This sketch controls a servo motor using a tilt control switch! * * 12 December 2012 * by Don Wilcher */ #include<Servo.h> // include Servo library int inPin = 2; // the tilt control switch is wired to Arduino D2 pin int reading; // the current reading from the input pin Servo myservo; // create servo motor object void setup() { myservo.attach(9); // attach servo motor to pin 9 of Arduino pinMode(inPin, INPUT); // make pin 2 an input } void loop() reading = digitalRead(inPin); // store digital data in variable if(reading == HIGH) { // check digital data with target value myservo.write(180); // if digital data equals target value, // servo motor rotates 180 degrees delay(15); // wait 15ms for rotation else { // if reading is not equal to target value, myservo.write(0); // rotate servo motor to 0 degrees delay(15); // wait 15ms for rotation