multi sensory communication 2/2

Sensor and Actuator

Ueki AtsuroSatoru Tokuhisa

2011.11.29

Parts

• Arduino UNO x1• USB cable x1• GROVE - Starter Bundle x 1pkg ※Please keep these parts until 12/20

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Additional Parts

• 3 axis Gyro x 1• 3 axis Accelerometer x 1• Sound Sensor x1• Vibrator x1• Rotary Angle Sensor x 1

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Download

• Source code– http://dl.dropbox.com/u/

326446/msc/02/source.zip

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Reference

• GROVE system– http://www.seeedstudio.com/wiki/GROVE_System

• Language Reference– http://arduino.cc/en/Reference/HomePage

• Tutorial– http://arduino.cc/en/Tutorial/HomePage

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Outline

• How to use Sensor– Rotary Angle Sensor – 3 axis Accelerometer – 3 axis Gyro

• How to use Actuator– Piezo Buzzer– Vibrator– Servo Morot

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Practice with GROVE

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GROVE Starter Kit

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Pack List

• Buttons X1• LEDs X1• Tilt X1• Buzzer X1• Rotary Angle Sensor X1• Temperature Sensor (Analog) X1

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Pack List

• Smart Relay X1• Protoshield X1• LCD1602 Baseshield + LCD X1• Stem  Base Shield X1• GROVE Cable X10

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Additional Parts

• 3 axis Gyro x 1• 3 axis Accelerometer x 1• Sound Sensor x1• Vibrator x1• Rotary Angle Sensor x 1

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Stem

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Analog InputA0-A5

Digital Input / OutputD1- D13

A1

A0

A2

A3

A4

A5

D1D2D3D4D5D6

D7D8D9D10D11D13 D12

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I2C

Review

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digitalWrite/analogWrite

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LED Twig

14

Stem

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D13

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Hello World!

void setup() { // initialize the digital pin as an output. // Pin 13 has an LED connected on most Arduino boards: pinMode(13, OUTPUT); }

void loop() { digitalWrite(13, HIGH); // set the LED on delay(1000); // wait for a second digitalWrite(13, LOW); // set the LED off delay(1000); // wait for a second}

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Change the Blink Interval

void setup() { // initialize the digital pin as an output. // Pin 13 has an LED connected on most Arduino boards: pinMode(13, OUTPUT); }

void loop() { digitalWrite(13, HIGH); // set the LED on delay(100); // wait for a second digitalWrite(13, LOW); // set the LED off delay(100); // wait for a second}

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Change the Blink Ratio

void setup() { // initialize the digital pin as an output. // Pin 13 has an LED connected on most Arduino boards: pinMode(13, OUTPUT); }

void loop() { digitalWrite(13, HIGH); // set the LED on delay(5); // wait for a second digitalWrite(13, LOW); // set the LED off delay(5); // wait for a second}

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Change the Blink Ratio

void setup() { // initialize the digital pin as an output. // Pin 13 has an LED connected on most Arduino boards: pinMode(13, OUTPUT); }

void loop() { digitalWrite(13, HIGH); // set the LED on delay(1); // wait for a second digitalWrite(13, LOW); // set the LED off delay(9); // wait for a second}

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Practice

• analogWrite(PWM)• http://arduino.cc/en/Reference/AnalogWrite

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PWM

• PWM(Pulse Width Modulation)

Ｄ = τ/ TD : duty cycleτ: pulseT ： transition

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ex: 0.25(D) = 1(τ)/4(T)

Pulse

time

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PWM

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Analog Input x 6

Digital Input and Output x 14

3.3VGround

Ground

5V

Power Indicator

External Power

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PWM~3, 5, 6, 9, 10, 11

Stem

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D11

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Practice

void setup() { pinMode(11, OUTPUT); // 3, 5, 6, 9, 10, 11,}

void loop() { analogWrite(11, 255); // 0-255}

• analogWrite• http://arduino.cc/en/Reference/AnalogWrite

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Sensor

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Practice 01

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Potentiometer Twig (Rotary angle sensor)

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Stem

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A0

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Arduino IDE

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Serial Monitor

Opens the serial monitor.

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Practice 01 const int analogInPin = 0; int sensorValue = 0;

void setup() { Serial.begin(9600); // open the serial port at 9600 bps: }

void loop() { // read the analog in value: sensorValue = analogRead(analogInPin); Serial.println(sensorValue); delay(1000); }

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-Rotary Angle Sensor ->A0-※Check the position of GND(Red)

Practice 01

• analogRead• Description

• Reads the value from the specified analog pin. • It will map input voltages between 0 and 5 volts into

integer values between 0 and 1023. • Syntax

• analogRead(pin) • Returns

• Int(0 to 1023)

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Practice 01

• Serial.begin• Description

• Sets the data rate in bits per second (baud) for serial data transmission.

• For communicating with the computer, use one of these rates: 300, 1200, 2400, 4800, 9600, 14400, 19200, 28800, 38400, 57600, or 115200.

• Syntax• Serial.begin(speed)

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Practice 01

• Serial.println• Description

• Prints data to the serial port as human-readable ASCII text followed by a carriage return character (ASCII 13, or '\r') and a newline character (ASCII 10, or '\n').

• Syntax• Serial.println(val)

Serial.println(val, format)

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Advance 01

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• How to check the present angle?• The angular range is 300 degrees • Hint

http://arduino.cc/en/Reference/Map

Advance 01 const int analogInPin = 0; int sensorValue = 0;

void setup() { Serial.begin(9600); // open the serial port at 9600 bps: }

void loop() { // read the analog in value: sensorValue = analogRead(analogInPin); sensorValue = map(sensorValue, 0, 1023, 0, 300); Serial.println(sensorValue); delay(1000); }

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-Rotary Angle Sensor ->A0-※Check the position of GND(Red)

Practice 02

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3 axis accelerometer

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Stem

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I2c

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Practice 02

• Source Code• Practice02.txt

• Open Practice02.txt, copy the all, and paste it to Arduino IDE.

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Arduino IDE

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Serial Monitor

Opens the serial monitor.

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Practice 02

• Wire Library• This library allows you to communicate with I2C / TWI

devices. http://www.arduino.cc/en/Reference/Wire

• I2C• Serial communication method developed by Pilips

• Advantages: it can handle multiple signals with only two signal cables.

• Disadvantages: its program gets longer.

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Practice 03

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3 axis Gyro

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Stem

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I2c

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Practice 03

• Source Code• Practice03.txt

• Open Practice03.txt, copy the all, and paste it to Arduino IDE.

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Actuator

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Practice 04

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knob

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x

Servo motor

Stem

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To knob

5V / GND to SERVO (RED / BROWN)

Digital 9 to SERVO(ORANGE)

Practice 04

• Source Code• Files > Example > Servo > Knob

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Practice 04#include <Servo.h> Servo myservo; // create servo object to control a servo int potpin = 0; // analog pin used to connect the potentiometerint val; // variable to read the value from the analog pin void setup() { myservo.attach(9); // attaches the servo on pin 9 to the servo object } void loop() { val = analogRead(potpin); // reads the value of the potentiometer (value between 0 and 1023)

val = map(val, 0, 1023, 0, 179); // scale it to use it with the servo (value between 0 and 180) myservo.write(val); // sets the servo position according to the scaled value delay(15); // waits for the servo to get there }

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Practice 05

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Vibrator

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Stem

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Port 9 to vibrator

Practice 05

• Source Code• Files > Example > 3.Analog > Fading

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Practice 06

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Vibrator

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x

Mic

Stem

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Port 9 to vibrator

Analog 0 to mic

Practice 06

• Source Code• Practice06.txt

• Open Practice06.txt, copy the all, and paste it to Arduino IDE.

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Practice 07

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Piezo Buzzer

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Stem

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Port 8 to Piezo Buzzer

Practice 07

• Source Code• Files > Example > 2.Digital > toneMelody

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Practice 08

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Piezo Buzzer

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knob

x

Stem

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Port 8 to Piezo Buzzer

analog 0 to knob

Practice 08

• Source Code• Files > Example > 2.Digital > tonePitchFollower

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Trial!!!

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accelerometer

x

Mic