2020.09 고등학교 피지컬컴퓨팅 특강

# 수업 개요

• • 일시 : 2020년 9월 25일

  • 대상 : 고등학생 8명 (동아리)

  • 수업 목표

    • 간단한 피지컬 컴퓨팅 실습

  • 실습환경

    • 아두이노 키트

    • [Tinkercad] > circuits

# 수업 계획

• • 피지컬 컴퓨팅 사례 영상 시청

    • Philips hue

  • https://youtu.be/7TOsFqqJgj4

• RGB LED 동작 실습

  • • 색 지정하기

      • RGB Color : https://www.w3schools.com/colors/colors_rgb.asp

      • Serial.print () : https://www.arduino.cc/reference/en/language/functions/communication/serial/print/

    • 밝아졌다가 흐려지기

      • while() : https://www.arduino.cc/reference/en/language/structure/control-structure/while/

    • 랜덤 색

      • random() : https://www.arduino.cc/reference/en/language/functions/random-numbers/random/

• RGB LED + 피에조

----

int r = 11, g = 10, b = 9;

void setup()

{

pinMode(r, OUTPUT);

pinMode(g, OUTPUT);

pinMode(b, OUTPUT);

}

void loop()

{

//red

analogWrite(r, 255);

analogWrite(g, 0);

analogWrite(b, 0);

delay(500);

//green

analogWrite(r, 0);

analogWrite(g, 255);

analogWrite(b, 0);

delay(500);

//blue

analogWrite(r, 0);

analogWrite(g, 0);

analogWrite(b, 255);

delay(500);

}

----

int r = 11, g = 10, b = 9;

void setup()

{

pinMode(r, OUTPUT);

pinMode(g, OUTPUT);

pinMode(b, OUTPUT);

}

void loop()

{

int rval = 0;

while(rval < 256){

analogWrite(r, rval);

analogWrite(g, 0);

analogWrite(b, 0);

rval = rval + 1;

delay(200);

}

while(rval > 0){

analogWrite(r, rval);

analogWrite(g, 0);

analogWrite(b, 0);

rval = rval - 1;

delay(200);

}

}

----

int r = 11, g = 10, b = 9;

void setup()

{

pinMode(r, OUTPUT);

pinMode(g, OUTPUT);

pinMode(b, OUTPUT);

Serial.begin(9600);

}

void loop()

{

int rval = 0;

while(rval < 256){

analogWrite(r, rval);

analogWrite(g, 0);

analogWrite(b, 0);

rval = rval + random(0, 11);

Serial.print("rval: ");

Serial.println(rval);

delay(200);

}

while(rval > 0){

analogWrite(r, rval);

analogWrite(g, 0);

analogWrite(b, 0);

rval = rval - random(0, 11);

Serial.print("rval: ");

Serial.println(rval);

delay(200);

}

}

----

int r = 11, g = 10, b = 9;

void setup()

{

pinMode(r, OUTPUT);

pinMode(g, OUTPUT);

pinMode(b, OUTPUT);

Serial.begin(9600);

}

void loop()

{

int rval = random(0,256);

int gval = random(0,256);

int bval = random(0,256);

analogWrite(r, rval);

analogWrite(g, gval);

analogWrite(b, bval);

delay(200);

}

---

// 박수 소리를 불빛으로 표현하기

analogRead() : https://www.arduino.cc/reference/en/language/functions/analog-io/analogread/

map() : https://www.arduino.cc/reference/en/language/functions/math/map/

if() :

int r = 11, g = 10, b = 9, s = 0;

void setup()

{

pinMode(r, OUTPUT);

pinMode(g, OUTPUT);

pinMode(b, OUTPUT);

Serial.begin(9600);

}

void loop()

{

int soundVal = analogRead(s);

Serial.print("soundVal: ");

Serial.println(soundVal);

int rVal = map(soundVal, 0, 1023, 0, 255);

analogWrite(r, rVal);

analogWrite(g, 0);

analogWrite(b, 0);

delay(100);

}