float temp;
      int tempPin = 0;
      void setup() {
         Serial.begin(9600);
      }
      void loop() {
         temp = analogRead(tempPin);
         // read analog volt from sensor and save to variable temp
         temp = temp * 0.48828125;
         // convert the analog volt to its temperature equivalent
         Serial.print("TEMPERATURE = ");
         Serial.print(temp); // display temperature value
         Serial.print("*C");
         Serial.println();
         delay(1000); // update sensor reading each one second
      }
      
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      Arduino - Temperature Sensor

      uno
      arduino

      The Temperature Sensor LM35 series are precision integrated-circuit temperature devices with an output voltage linearly proportional to the Centigrade temperature.

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