love-o-meter

Projects General Guidance
1

Can someone please explain to me why my sensor is not reading anything...

const int sensorPin = A0;
const float baselineTemp = 20.0;

void setup() {
    Serial.begin(9600);
    for(int pinNumber = 2; pinNumber<5; pinNumber++){
      pinMode(pinNumber,OUTPUT);
      digitalWrite(pinNumber, LOW);
  
    }
  // put your setup code here, to run once:

}

void loop() {
  int sensorVal = analogRead(sensorPin);
  Serial.print("Sensor Value: 158");
  Serial.print(sensorVal);
  // put your main code here, to run repeatedly:
  float voltage = (sensorVal/1024.0) * 5.0;
  Serial.print(", Volts: .77");
  Serial.print(voltage);
  Serial.print(", degrees C: 27.15");
  // convert the voltage to temperature in degrees
  float temperature = (voltage - .5) * 100;
  Serial.println(temperature);
  if(temperature < baselineTemp){
    digitalWrite(2, LOW);
    digitalWrite(3, LOW);
    digitalWrite(4, LOW);
  }else if(temperature >= baselineTemp+2 &&
    temperature < baselineTemp+4){
    digitalWrite(2, HIGH);
    digitalWrite(3, LOW);
    digitalWrite(4, LOW);
    
  }else if(temperature >= baselineTemp+4 &&
    temperature < baselineTemp+6){
    digitalWrite(2, HIGH);
    digitalWrite(3, HIGH);
    digitalWrite(4, LOW);
    
  }else if(temperature >= baselineTemp+6){
    digitalWrite(2, HIGH);
    digitalWrite(3, HIGH);
    digitalWrite(4, HIGH);

    }
    delay(1);
}
3

Your correct but it but the reading does not change when I put my finger next to it and in small print it says:
TMP
36GZ
something 1630
556248

4

I had the TMP sensor turned around backwards for a minute and it was really hot but the connectors don't seem to be burnt out.

5

One out of three of the lights are blinking while my finger is not next to it but when I put my finger on it the one light stops blinking but the readings of sensor value, voltage, and degrees all remain around the same.

6

I don't know if the images show. There might be a default with arduino. Can someone please assist me on how to properly upload the photos and give me advice on how to properly run the love-o-meter. Please and thank you.

7

Posting images

8

It seems you have a TMP36 temperature sensor, based on the printing & what you do in your sketch.

As you connected it the wrong way around before, with the sensor overheating, you may have killed it. At best your sensor can not be relied upon to work properly. Get another one, make sure that one works (and with it the rest of your setup), then you can try if the old one still works.

9

Thanks guys. I appreciate it. But for the imaging I look at that section and tried it and still could not post an image.