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47 lines
1.9 KiB
C++
Executable File
47 lines
1.9 KiB
C++
Executable File
/* ---------------------------------------------------------
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* | Arduino Experimentation Kit Example Code |
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* | CIRC-10 .: Temperature :. (TMP36 Temperature Sensor) |
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* ---------------------------------------------------------
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*
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* A simple program to output the current temperature to the IDE's debug window
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*
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* For more details on this circuit: http://tinyurl.com/c89tvd
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*/
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//TMP36 Pin Variables
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int temperaturePin = 0; //the analog pin the TMP36's Vout (sense) pin is connected to
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//the resolution is 10 mV / degree centigrade
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//(500 mV offset) to make negative temperatures an option
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/*
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* setup() - this function runs once when you turn your Arduino on
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* We initialize the serial connection with the computer
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*/
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void setup()
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{
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Serial.begin(9600); //Start the serial connection with the copmuter
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//to view the result open the serial monitor
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//last button beneath the file bar (looks like a box with an antenae)
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}
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void loop() // run over and over again
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{
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float temperature = getVoltage(temperaturePin); //getting the voltage reading from the temperature sensor
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temperature = (temperature - .5) * 100; //converting from 10 mv per degree with 500 mV offset
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//to degrees ((volatge - 500mV) times 100)
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Serial.print(temperature); //printing the result
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Serial.print(" Celsius ");
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Serial.print(getVoltage(temperaturePin));
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Serial.println(" Volt");
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delay(1000); //waiting a second
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}
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/*
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* getVoltage() - returns the voltage on the analog input defined by
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* pin
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*/
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float getVoltage(int pin){
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return (analogRead(pin) * .004882814); //converting from a 0 to 1023 digital range
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// to 0 to 5 volts (each 1 reading equals ~ 5 millivolts
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}
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