My TMP36 Temperature Sensor Stopped Working

Other Hardware Sensors
1

Hello,

I was using my TMP36 temperature sensor for a project and it was working fine, displaying correct temperatures. About 20 to 30 minutes after I was using it, it just stopped working. My house was at room temperature but the sensor kept reading 32 degrees F (0 degrees C). I took the sensor out the circuit and the serial monitor was reading back the same values as it was when the sensor was plugged in (32 degrees F). I took this as evidence that the sensor was not working. The sensor came in a brand new arduino kit that I was gifted only last week and the temperature sensor is already not working. The sensor is hooked up correctly and I didn't change anything in the code from when it was working. I just wanted to know what you guys think I should do or if you have any suggestions on how to fix my problem. Thank you

2

The first thing to do is supply the code and circuit you used,

Weedpharma

3

Its just a simple code to take the Temperature in fahrenheit and celsius

const int tempPin = A0;
int sensorVal = analogRead(tempPin);
float voltage = (sensorVal/1024.0) * 5000;
float celsius = (voltage/10);
float fahrenheit = (celsius * 1.80) + 32.0;

void setup()
{
  Serial.begin(9600);
}

void loop()
{
      Serial.print(celsius);
      Serial.print(" C, ");
      Serial.print(fahrenheit);
      Serial.println(" F");  
}
4

Where in the loop() do you update the temperature?

Weedpharma

5

What do you mean by update temperature? It is a loop so it checks the temperature over and over very rapidly. In the serial monitor I can see it updating at a very fast rate. I put a delay at the end of the loop but it did not seem to fix the problem.

6

This is the only part that loops.

void loop()
{
Serial.print(celsius);
Serial.print(" C, ");
Serial.print(fahrenheit);
Serial.println(" F");
}

There is no updating of the sensor here, just printing output.

Try putting this in the loop so it is read each time around.

int sensorVal = analogRead(tempPin);
float voltage = (sensorVal/1024.0) * 5000;
float celsius = (voltage/10);
float fahrenheit = (celsius * 1.80) + 32.0;

Weedpharma

7

Oh thank you so much! It worked