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→Low resolution reading
=== Low resolution reading ===
=== Low resolution reading ===
<syntaxhighlight lang="c">
// where is wired the TMP36
const int temperaturePin = A3; // analogue input
// Executed once when starting the microcontroler
void setup() {
// start serial connexion with the computer
Serial.begin(9600);
}
// Executed again and again
void loop() {
// read the voltage of TMP36
float voltage = getVoltage(temperaturePin);
Serial.print( "Voltage : " );
Serial.print( voltage );
Serial.println( " Volts" );
// convert voltage to temperature
// Degrees = (voltage - 500mV) multiplied by 100
float temperature = (voltage - .5) *100;
Serial.print( "Temperature: " );
Serial.print(temperature);
Serial.println( " °C" );
Serial.println( " " );
delay(1000); // wait 1 second
}
/*
* getVoltage() - return the voltage of an analog pin
*/
float getVoltage(int pin){
// Convert digital value between 0 & 4095 to
// voltage between 0 & 3.3 volts.
// (each unit equal 3.3 / 4095 = 0.805 millivolts)
return (analogRead(pin) * .000805);
}
</syntaxhighlight>
Once the sketch uploaded to the board, you can start the Serial Monitor
[[Fichier:ENG-CANSAT-BMP280-04.png]]
Which produce the following result on the Serial Monitor
[[Fichier:ENG-CANSAT-TMP36-70.png]]
{{ENG-CANSAT-TRAILER}}
=== High resolution reading ===
=== High resolution reading ===