Thermometer - wrong temperature reading - help

Using Arduino Project Guidance
1

Hello all,
i have a totally wrong reading on my simple thermometer, following the wires and results.

float temp;
int tempPin = 0;

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

void loop()
{
 temp = analogRead(tempPin);
 temp = temp * 0.48828125;
 Serial.print(temp);
 Serial.println();
 delay(2000);
}

Images attached

My readings are all above 450+ instead of ~20°C

Is it wrong?
Thank You

Mattia

temp1_bb.png

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2

Please read and follow the directions in "how to use this forum". Few people will download from a site.

3

(deleted)

4 
int tempPin = A0;

instead of

int tempPin = 0;
5

I'm using a Dallas DS18B20,

with A0 or 0 i get the same result

6

The code you have is not intended to read the DS18B20. You will need a library for that, or follow this Hacktronix tutorial.

7

EcoIV:
I'm using a Dallas DS18B20,

with A0 or 0 i get the same result

Your pic shows a TMP36 and your code reads an analog input, hence my suggestion