Stray '\342' in program irrogation system

I have a problem with some code I have found online:

void setup() {
// put your setup code here, to run once:

}

void loop() {
// put your main code here, to run repeatedly:

}
#define sen1 A0
#define sen2 A1
int led1=3,led2=4,led3=5, pump_rly=2;
void setup()
{
// put your setup code here, to run once:
pinMode(led1,OUTPUT);
pinMode(led2,OUTPUT);
pinMode(led3,OUTPUT);
pinMode(pump_rly,OUTPUT);
digitalWrite(led1,LOW);
digitalWrite(led2,LOW);
digitalWrite(led3,LOW);
digitalWrite(pump_rly,LOW);
Serial.begin(9600);
Serial.println(“automatic irrigation system using arduino”);
}

void loop()
{
// put your main code here, to run repeatedly:
int sen1_value, sen2_value,soil_moisture_level_1,soil_moisture_level_2;
sen1_value = analogRead(sen1);
sen2_value = analogRead(sen2);
soil_moisture_level_1 = map(sen1_value,200,1020,100,1);
soil_moisture_level_2 = map(sen2_value,200,1020,100,1);
Serial.print(“Soil Moisture level in POT 1: “);
Serial.print(soil_moisture_level_1);
Serial.println(‘%’);
Serial.print(“Soil Moisture level in POT 2: “);
Serial.print(soil_moisture_level_2);
Serial.println(‘%’);

if(soil_moisture_level_1<10)
{
digitalWrite(led1,HIGH);
Serial.println(“moisture level in POT 1 is low”);
}
else if(soil_moisture_level_1>90)
{
digitalWrite(led1,LOW);
Serial.println(“moisture level in POT 1 is adquate”);
}

if(soil_moisture_level_2<10)
{
digitalWrite(led2,HIGH);
Serial.println(“moisture level in POT 2 is low”);
}
else if(soil_moisture_level_2>90)
{
digitalWrite(led2,LOW);
Serial.println(“moisture level in POT 2 is adquate”);
}

/* if(sen3_value>500)
{
digitalWrite(led3,HIGH);
Serial.println(“moisture level in POT 3 is low”);
}
else if(sen3_value<50)
{
digitalWrite(led3,LOW);
Serial.println(“moisture level in POT 3 is adquate”);
}*/

if((soil_moisture_level_1<10) || (soil_moisture_level_2<10))
{
Serial.println(“PUMP ON”);
digitalWrite(pump_rly,HIGH);
}

if((soil_moisture_level_1>94) && (soil_moisture_level_2>94))
{
Serial.println(“PUMP OFF”);
digitalWrite(pump_rly,LOW);
}
delay(3000);
}

And I have the error messages:

Arduino:1.8.15 (Windows Store 1.8.49.0) (Windows 10), Płytka:"Arduino Nano, ATmega328P (Old Bootloader)"

sketch_may21e:25:18: error: stray '\342' in program

Serial.println(“automatic irrigation system using arduino”);

              ^

sketch_may21e:25:19: error: stray '\200' in program

Serial.println(“automatic irrigation system using arduino”);

               ^

sketch_may21e:25:20: error: stray '\234' in program

Serial.println(“automatic irrigation system using arduino”);

                ^

sketch_may21e:25:62: error: stray '\342' in program

Serial.println(“automatic irrigation system using arduino”);

                                                          ^

sketch_may21e:25:63: error: stray '\200' in program

Serial.println(“automatic irrigation system using arduino”);

                                                           ^

sketch_may21e:25:64: error: stray '\235' in program

Serial.println(“automatic irrigation system using arduino”);

                                                            ^

sketch_may21e:36:16: error: stray '\342' in program

Serial.print(“Soil Moisture level in POT 1: “);

            ^

sketch_may21e:36:17: error: stray '\200' in program

Serial.print(“Soil Moisture level in POT 1: “);

             ^

sketch_may21e:36:18: error: stray '\234' in program

Serial.print(“Soil Moisture level in POT 1: “);

              ^

sketch_may21e:36:49: error: stray '\342' in program

Serial.print(“Soil Moisture level in POT 1: “);

                                             ^

sketch_may21e:36:50: error: stray '\200' in program

Serial.print(“Soil Moisture level in POT 1: “);

                                              ^

sketch_may21e:36:51: error: stray '\234' in program

Serial.print(“Soil Moisture level in POT 1: “);

                                               ^

sketch_may21e:38:18: error: stray '\342' in program

Serial.println(‘%’);

              ^

sketch_may21e:38:19: error: stray '\200' in program

Serial.println(‘%’);

               ^

sketch_may21e:38:20: error: stray '\230' in program

Serial.println(‘%’);

                ^

sketch_may21e:38:22: error: stray '\342' in program

Serial.println(‘%’);

                  ^

sketch_may21e:38:23: error: stray '\200' in program

Serial.println(‘%’);

                   ^

sketch_may21e:38:24: error: stray '\231' in program

Serial.println(‘%’);

                    ^

sketch_may21e:39:16: error: stray '\342' in program

Serial.print(“Soil Moisture level in POT 2: “);

            ^

sketch_may21e:39:17: error: stray '\200' in program

Serial.print(“Soil Moisture level in POT 2: “);

             ^

sketch_may21e:39:18: error: stray '\234' in program

Serial.print(“Soil Moisture level in POT 2: “);

              ^

sketch_may21e:39:49: error: stray '\342' in program

Serial.print(“Soil Moisture level in POT 2: “);

                                             ^

sketch_may21e:39:50: error: stray '\200' in program

Serial.print(“Soil Moisture level in POT 2: “);

                                              ^

sketch_may21e:39:51: error: stray '\234' in program

Serial.print(“Soil Moisture level in POT 2: “);

                                               ^

sketch_may21e:41:18: error: stray '\342' in program

Serial.println(‘%’);

              ^

sketch_may21e:41:19: error: stray '\200' in program

Serial.println(‘%’);

               ^

sketch_may21e:41:20: error: stray '\230' in program

Serial.println(‘%’);

                ^

sketch_may21e:41:22: error: stray '\342' in program

Serial.println(‘%’);

                  ^

sketch_may21e:41:23: error: stray '\200' in program

Serial.println(‘%’);

                   ^

sketch_may21e:41:24: error: stray '\231' in program

Serial.println(‘%’);

                    ^

sketch_may21e:46:20: error: stray '\342' in program

 Serial.println(“moisture level in POT 1 is low”);

                ^

sketch_may21e:46:21: error: stray '\200' in program

 Serial.println(“moisture level in POT 1 is low”);

                 ^

sketch_may21e:46:22: error: stray '\234' in program

 Serial.println(“moisture level in POT 1 is low”);

                  ^

sketch_may21e:46:53: error: stray '\342' in program

 Serial.println(“moisture level in POT 1 is low”);

                                                 ^

sketch_may21e:46:54: error: stray '\200' in program

 Serial.println(“moisture level in POT 1 is low”);

                                                  ^

sketch_may21e:46:55: error: stray '\235' in program

 Serial.println(“moisture level in POT 1 is low”);

                                                   ^

sketch_may21e:51:20: error: stray '\342' in program

 Serial.println(“moisture level in POT 1 is adquate”);

                ^

sketch_may21e:51:21: error: stray '\200' in program

 Serial.println(“moisture level in POT 1 is adquate”);

                 ^

sketch_may21e:51:22: error: stray '\234' in program

 Serial.println(“moisture level in POT 1 is adquate”);

                  ^

sketch_may21e:51:57: error: stray '\342' in program

 Serial.println(“moisture level in POT 1 is adquate”);

                                                     ^

sketch_may21e:51:58: error: stray '\200' in program

 Serial.println(“moisture level in POT 1 is adquate”);

                                                      ^

sketch_may21e:51:59: error: stray '\235' in program

 Serial.println(“moisture level in POT 1 is adquate”);

                                                       ^

sketch_may21e:57:20: error: stray '\342' in program

 Serial.println(“moisture level in POT 2 is low”);

                ^

sketch_may21e:57:21: error: stray '\200' in program

 Serial.println(“moisture level in POT 2 is low”);

                 ^

sketch_may21e:57:22: error: stray '\234' in program

 Serial.println(“moisture level in POT 2 is low”);

                  ^

sketch_may21e:57:53: error: stray '\342' in program

 Serial.println(“moisture level in POT 2 is low”);

                                                 ^

sketch_may21e:57:54: error: stray '\200' in program

 Serial.println(“moisture level in POT 2 is low”);

                                                  ^

sketch_may21e:57:55: error: stray '\235' in program

 Serial.println(“moisture level in POT 2 is low”);

                                                   ^

sketch_may21e:62:20: error: stray '\342' in program

 Serial.println(“moisture level in POT 2 is adquate”);

                ^

sketch_may21e:62:21: error: stray '\200' in program

 Serial.println(“moisture level in POT 2 is adquate”);

                 ^

sketch_may21e:62:22: error: stray '\234' in program

 Serial.println(“moisture level in POT 2 is adquate”);

                  ^

sketch_may21e:62:57: error: stray '\342' in program

 Serial.println(“moisture level in POT 2 is adquate”);

                                                     ^

sketch_may21e:62:58: error: stray '\200' in program

 Serial.println(“moisture level in POT 2 is adquate”);

                                                      ^

sketch_may21e:62:59: error: stray '\235' in program

 Serial.println(“moisture level in POT 2 is adquate”);

                                                       ^

sketch_may21e:78:22: error: stray '\342' in program

   Serial.println(“PUMP ON”);

                  ^

sketch_may21e:78:23: error: stray '\200' in program

   Serial.println(“PUMP ON”);

                   ^

sketch_may21e:78:24: error: stray '\234' in program

   Serial.println(“PUMP ON”);

                    ^

sketch_may21e:78:32: error: stray '\342' in program

   Serial.println(“PUMP ON”);

                            ^

sketch_may21e:78:33: error: stray '\200' in program

   Serial.println(“PUMP ON”);

                             ^

sketch_may21e:78:34: error: stray '\235' in program

   Serial.println(“PUMP ON”);

                              ^

sketch_may21e:84:20: error: stray '\342' in program

 Serial.println(“PUMP OFF”);

                ^

sketch_may21e:84:21: error: stray '\200' in program

 Serial.println(“PUMP OFF”);

                 ^

sketch_may21e:84:22: error: stray '\234' in program

 Serial.println(“PUMP OFF”);

                  ^

sketch_may21e:84:31: error: stray '\342' in program

 Serial.println(“PUMP OFF”);

                           ^

sketch_may21e:84:32: error: stray '\200' in program

 Serial.println(“PUMP OFF”);

                            ^

sketch_may21e:84:33: error: stray '\235' in program

 Serial.println(“PUMP OFF”);

                             ^

C:\Users\maciej\Documents\Arduino\sketch_may21e\sketch_may21e.ino: In function 'void setup()':

sketch_may21e:13:6: error: redefinition of 'void setup()'

void setup()

  ^~~~~

C:\Users\maciej\Documents\Arduino\sketch_may21e\sketch_may21e.ino:1:6: note: 'void setup()' previously defined here

void setup() {

  ^~~~~

sketch_may21e:25:21: error: 'automatic' was not declared in this scope

Serial.println(“automatic irrigation system using arduino”);

                 ^~~~~~~~~

C:\Users\maciej\Documents\Arduino\sketch_may21e\sketch_may21e.ino:25:21: note: suggested alternative: 'static'

Serial.println(“automatic irrigation system using arduino”);

                 ^~~~~~~~~

                 static

C:\Users\maciej\Documents\Arduino\sketch_may21e\sketch_may21e.ino: In function 'void loop()':

sketch_may21e:28:6: error: redefinition of 'void loop()'

void loop()

  ^~~~

C:\Users\maciej\Documents\Arduino\sketch_may21e\sketch_may21e.ino:6:6: note: 'void loop()' previously defined here

void loop() {

  ^~~~

sketch_may21e:36:19: error: 'Soil' was not declared in this scope

Serial.print(“Soil Moisture level in POT 1: “);

               ^~~~

C:\Users\maciej\Documents\Arduino\sketch_may21e\sketch_may21e.ino:36:19: note: suggested alternative: 'ceil'

Serial.print(“Soil Moisture level in POT 1: “);

               ^~~~

               ceil

sketch_may21e:38:21: error: expected primary-expression before '%' token

Serial.println(‘%’);

                 ^

sketch_may21e:38:25: error: expected primary-expression before ')' token

Serial.println(‘%’);

                     ^

sketch_may21e:39:24: error: expected ')' before 'Moisture'

Serial.print(“Soil Moisture level in POT 2: “);

                    ^~~~~~~~

sketch_may21e:41:21: error: expected primary-expression before '%' token

Serial.println(‘%’);

                 ^

sketch_may21e:41:25: error: expected primary-expression before ')' token

Serial.println(‘%’);

                     ^

sketch_may21e:46:23: error: 'moisture' was not declared in this scope

 Serial.println(“moisture level in POT 1 is low”);

                   ^~~~~~~~

C:\Users\maciej\Documents\Arduino\sketch_may21e\sketch_may21e.ino:46:23: note: suggested alternative: 'dtostre'

 Serial.println(“moisture level in POT 1 is low”);

                   ^~~~~~~~

                   dtostre

sketch_may21e:51:23: error: 'moisture' was not declared in this scope

 Serial.println(“moisture level in POT 1 is adquate”);

                   ^~~~~~~~

C:\Users\maciej\Documents\Arduino\sketch_may21e\sketch_may21e.ino:51:23: note: suggested alternative: 'dtostre'

 Serial.println(“moisture level in POT 1 is adquate”);

                   ^~~~~~~~

                   dtostre

sketch_may21e:57:23: error: 'moisture' was not declared in this scope

 Serial.println(“moisture level in POT 2 is low”);

                   ^~~~~~~~

C:\Users\maciej\Documents\Arduino\sketch_may21e\sketch_may21e.ino:57:23: note: suggested alternative: 'dtostre'

 Serial.println(“moisture level in POT 2 is low”);

                   ^~~~~~~~

                   dtostre

sketch_may21e:62:23: error: 'moisture' was not declared in this scope

 Serial.println(“moisture level in POT 2 is adquate”);

                   ^~~~~~~~

C:\Users\maciej\Documents\Arduino\sketch_may21e\sketch_may21e.ino:62:23: note: suggested alternative: 'dtostre'

 Serial.println(“moisture level in POT 2 is adquate”);

                   ^~~~~~~~

                   dtostre

sketch_may21e:78:25: error: 'PUMP' was not declared in this scope

   Serial.println(“PUMP ON”);

                     ^~~~

C:\Users\maciej\Documents\Arduino\sketch_may21e\sketch_may21e.ino:78:25: note: suggested alternative: 'PGM_P'

   Serial.println(“PUMP ON”);

                     ^~~~

                     PGM_P

sketch_may21e:84:23: error: 'PUMP' was not declared in this scope

 Serial.println(“PUMP OFF”);

                   ^~~~

C:\Users\maciej\Documents\Arduino\sketch_may21e\sketch_may21e.ino:84:23: note: suggested alternative: 'PGM_P'

 Serial.println(“PUMP OFF”);

                   ^~~~

                   PGM_P

exit status 1

stray '\342' in program

Can someone help me?

All the quotes on your print statements have been transformed by the web page you copied the code from. A bit of find and replace should sort it out.

I am a beginer what do I have to do?

Replace every quote I.e. " with the one on your keyboard. They look ok, but they are not. Do a couple manually at the end of the program and you should have (slightly) fewer errors when you recompile. Rinse and repeat until they are all gone.

thanks works now