디지털 4번에 pull up으로 버튼연결

int buttonPin = 4;
int ledPin = 13;
boolean value;
 
void setup() {
  pinMode(buttonPin, INPUT);
  pinMode(ledPin, OUTPUT);      
}
 
void loop() {
  value = digitalRead(buttonPin);
  if (value == HIGH) {
    digitalWrite(ledPin, HIGH);
  } else {
    digitalWrite(ledPin, LOW);
  }
}

• http://learn.adafruit.com/photocells/example-projects
• http://www.adafruit.com/blog/2009/05/19/piezo-with-an-arduino-photoresistor/

FLEX-01

LM35

http://www.national.com/ds/LM/LM35.pdf

adafruit http://www.ladyada.net/learn/sensors/tmp36.html

캘리브레이션: http://www.arduino.cc/playground/Main/LM35HigherResolution

캘리브레이션: 참고출처 http://luckylarry.co.uk/arduino-projects/arduino-using-a-sharp-ir-sensor-for-distance-calculation/

int IRpin = 1;                                    // analog pin for reading the IR sensor
void setup() {
  Serial.begin(9600);                             // start the serial port
}
void loop() {
  float volts = analogRead(IRpin)*0.0048828125;   // value from sensor * (5/1024) - if running 3.3.volts then change 5 to 3.3
  float distance = 65*pow(volts, -1.10);          // worked out from graph 65 = theretical distance / (1/Volts)S - luckylarry.co.uk
  Serial.println(distance);                       // print the distance
  delay(100);                                     // arbitary wait time.
}

GP2YOA02에 스펙에 맞추어 캘리브레이션 하기!