Youn-Hee Han, In-Seok Kang {yhhan, Laboratory of Intelligent Networks Advanced Technology Research Center Korea University of Technology.

Youn-Hee Han, In-Seok Kang{yhhan, Iseka}@kut.ac.kr

Laboratory of Intelligent NetworksAdvanced Technology Research Center

Korea University of Technologyhttp://link.kut.ac.kr

Ubiquitous Computing Practice(Temperature)

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Introduction

TMP36

Temperature print out the temperature(centigrade) 섭씨 온도 출력

Convert to Fahrenheight’s temperature 화씨 온도 출력

도전과제

Contents

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Introduction

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TMP36

Feature :- Voltage Input: 2.7 V to 5.5 VDC - 10 mV/°C scale factor - ±2°C accuracy over tempera-ture - ±0.5°C linearity - Operating Range: −40°C to +125°C

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TEMPERATUREprint out the temperature(centigrade)

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Temperature

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schematic

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If you're using a 5V ArduinoVoltage at pin in milliVolts

= (reading from ADC) * (5000/1024) This formula converts the number 0-1023 from the ADC into 0-5000mV (= 5V)

If you're using a 3.3V ArduinoVoltage at pin in milliVolts

= (reading from ADC) * (3300/1024) This formula converts the number 0-1023 from the ADC into 0-3300mV (= 3.3V)

Centigrade temperature = [(analog voltage in mV) - 500] / 10

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Sketchint temperaturePin = 0; void setup() {

Serial.begin(9600);}

void loop() {float temperature = getVoltage(temperaturePin); temperature = (temperature - 0.5) * 100; // Serial.println(temperature); delay(1000);

}float getVoltage(int pin) {

return (analogRead(pin) * .004882814); // 5 / 1024//converting from a 0 to 1023 digital range// to 0 to 5 volts (each 1 reading equals ~ 5 milli-

volts)}

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Result

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CONVERT TO FAHREN-HEIGHT’S

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convert to Fahrenheight’s

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Sketchint sensorPin = 0; void setup() { Serial.begin(9600);} void loop() {

int reading = analogRead(sensorPin); float voltage = reading * 5.0;voltage /= 1024.0; Serial.print(voltage); Serial.println(" volts"); float temperatureC = (voltage - 0.5) * 100 ; Serial.print(temperatureC); Serial.println(" degrees C");

// now convert to Fahrenheight float temperatureF = (temperatureC * 9.0 / 5.0) + 32.0; Serial.print(temperatureF); Serial.println(" degrees F"); delay(1000);

}

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도전과제조도와 온도의 변화에 따라 LED 작동

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도전과제 내용조도의 변화에 따라 LED 가 점차 점등온도의 변화에 따라 LED 가 점차 점등

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Thank You