Some (simple??) stuff. Just a weird project I don't understand.

Projects Programming
1

I'm pretty new to coding, and I'm in an engineering class where we've just started working with Arduino. The project I'm working on is basically a heat sensor that works as a 'Love-O-Meter.' It's pretty dumb and simple but I'll put the list of errors below.

14:15: error: stray '\342' in program
14:16: error: stray '\200' in program
14:17: error: stray '\234' in program
14:32: error: stray '\342' in program
14:33: error: stray '\200' in program
14:34: error: stray '\234' in program
18:15: error: stray '\342' in program
18:16: error: stray '\200' in program
18:17: error: stray '\234' in program
18:27: error: stray '\342' in program
18:28: error: stray '\200' in program
18:29: error: stray '\234' in program
In function 'void loop()':
14:18: error: 'Sensor' was not declared in this scope
14:18: note: suggested alternative: 'perror'
18:18: error: expected primary-expression before ',' token
18:20: error: 'Volts' was not declared in this scope
exit status 1

const int sensorPin = A0;
const float baselineTemp = 20.0;
void setup(){
 Serial.begin(9600); // open a serial port
 for(int pinNumber = 2; pinNumber<5; pinNumber++){
 pinMode(pinNumber,OUTPUT);
 digitalWrite(pinNumber, LOW);
 }
}
void loop(){
 int sensorVal = analogRead(sensorPin);
 Serial.print(“Sensor Value: “);
 Serial.print(sensorVal);
  // convert the ADC reading to voltage
 float voltage = (sensorVal/1024.0) * 5.0;
 Serial.print(“, Volts: “);
 Serial.print(voltage);
 Serial.print(", degrees C:");
 // convert the voltage to temperature in degrees
 float temperature = (Volts - 0.5) * 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);
}

[tt]​[/tt]

2

Hi,
Welcome to the forum.
Where did you get the code?

What model Arduino are you using?

I have tried to compile it, where does the variable Volts come from?

Thanks.. Tom.. :slight_smile:

3

TomGeorge:
Hi,
Welcome to the forum.
Where did you get the code?

What model Arduino are you using?

I have tried to compile it, where does the variable Volts come from?

Thanks.. Tom.. :slight_smile:

Ah, it's some scuffed up code my teacher wrote and then told us to fix. I tried but I don't get it. Not sure where volts came from. I'm using the Uno though!
Thank you!

4

Those stray characters are the sort of thing that shows up when you copy-paste code from a web page or PDF etc.

5

Blackfin:
Those stray characters are the sort of thing that shows up when you copy-paste code from a web page or PDF etc.

https://armandoramos2145.weebly.com/uploads/8/7/7/9/87794446/uwu.pdf

Thank you so much! :cry: I really appreciate it!

6

Incidentally, if you copy the code that you posted here, the website will have removed the stray characters.

7

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