not declared in this scope

Projects Programming
1

so i am trying to do this project from the starter book

but it keeps saying

blueLEDPin was not declared in this scope

here is the code:

const int greenLEDPin = 9;
const int redLEDPin = 11;
const int blueLedPin = 10;

const int redSensorPin = A0;
const int greenSensorPin = A1;
const int blueSensorPin = A2;

int redValue = 0;
int greenValue = 0;
int blueValue = 0;

int redSensorValue = 0;
int greenSensorValue = 0;
int blueSensorValue = 0;

void setup() {
Serial.begin(9600);
pinMode(greenLEDPin,OUTPUT);
pinMode(redLEDPin,OUTPUT);
pinMode(blueLEDPin,OUTPUT);
}

void loop() {
redSensorValue = analogRead(redSensorPin);
delay(5);
greenSensorValue = analogRead(greenSensorPin);
delay(5)
blueSensorValue = analogRead(blueSensorPin);

Serial.print("Raw Sensor Values \t Red: ");
Serial.print(redSensorValue);
Serial.print("\t Green: ");
Serial.print(greenSensorValue);
Serial.print("\t Blue: ");
Serial.print(blueSensorValue);
redValue = redSensorValue/4;
greenValue = greenSensorValue/4;
blueValue = blueSensorValue/4;

Serial.print("Mapped Sensor Value /t Red: ");
Serial.print(redValue);
Serial.print("/t Green: ");
Serial.print(greenValue);
Serial.print("/t Blue: ");
Serial.print(blueValue);

analogWrite(redLEDPin, redValue);
analogWrite(greenLEDPin, greenValue);
analogWrite(blueLEDPin, blueValue);
}

there error message :

sketch_may23b.ino: In function 'void setup()':
sketch_may23b:21: error: 'blueLEDPin' was not declared in this scope
sketch_may23b.ino: In function 'void loop()':
sketch_may23b:29: error: expected ;' before 'blueSensorValue' sketch_may23b:32: error: expected ;' before 'Serial'
sketch_may23b:51: error: 'blueLEDPin' was not declared in this scope

2 
blueLEDPin was not declared in this scope

const int blueLedPin = 10;

Look carefully

3

dehsar:
sketch_may23b:21: error: 'blueLEDPin' was not declared in this scope

Yes, you declared:

const int blueLedPin = 10;

Check uppercase/lowercase spelling!

With C/C++ the spelling is important, including uppercase/lowercase characters!

4

thanks alot guys amazing how you can spot these small things in a short amount of time w

5

dehsar:
thanks alot guys amazing how you can spot these small things in a short amount of time w

Not really - the compiler gave us a massive clue.

6

i got the same problem too, "not declared in this scope". but its more complex code i think, here the code

const int MaxMotors = 4;
int pingPin = 2;
int potPin = 1;
int MotorPins[MaxMotors] = {3,5,6,9};
int val = 0;
double MinVibe = 75;
double MaxVibe = 255;

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

}
void loop()
{

double duration;
double inches;
double cm;

inches = microsecondsToInches(duration);
cm = microsecondsToCentimeters(duration);

val = analogRead(potPin);
if(val>500){

pinMode(pingPin, OUTPUT);

digitalWrite(pingPin, LOW);
delayMicroseconds(2);

digitalWrite(pingPin, HIGH);
delayMicroseconds(5);

digitalWrite(pingPin, LOW);
pinMode(pingPin, INPUT);

duration = pulseIn(pingPin, HIGH);

double MaxDistance = 48;

double scale = 1 - inches / MaxDistance;

double Vibe = scaleMaxVibe;
if (Vibe <MinVibe) {
Vibe = MinVibe;}
for(int i=0;i <MaxMotors; i++) {
if (inches < MaxDistance) {
pinMode(MotorPins, OUTPUT);*
_ analogWrite(MotorPins*,Vibe); }_
_ else{_
_ pinMode(MotorPins, OUTPUT);
analogWrite(MotorPins,0); } }*_

* Serial.print(scale);*
* //Serial.print("in, ");*
* delay(100);*
* Serial.println();*
* }*
* else {*
* pinMode(pingPin, LOW);*
* for(int n=0; n <MaxMotors; n++)*
* pinMode(MotorPins[n],LOW);}*
* long microsecondsToInches(long microseconds) {*
* return microseconds /74/2;}*
* long microsecondsToCentimeters(long microseconds) {*
* return microseconds / 29 / 2;*

* }*

}
-----------------------

when i try to compile, there was a message like this "'microsecondsToInches' was not declared in this scope" but when i remove the line of code "
* inches = microsecondsToInches(duration);*
* cm = microsecondsToCentimeters(duration);*
* long microsecondsToInches(long microseconds) {*
* return microseconds /74/2;}*
* long microsecondsToCentimeters(long microseconds) {*
* return microseconds / 29 / 2; *
"
the code was working fine, but because i use parrallax ping, it must use the microseconds bla bla bla lines, anyone can help me?, please, thank you. sorry for long post.

7

...and did you read the solutions in the thread you hijacked? Also did you read the post at the top, "how to use this forum"?

8

I have same problem: but it says:exit status 1
'greenLEDPin' was not declared in this scope

const int greenLEDpin = 9;
const int redLEDpin = 10;
const int blueLEDpin = 11;

const int redSensorPin = A0;
const int greenSensorPin = A1;
const int blueSensorPin = A2;

int redValue =0;
int greenValue = 0;
int blueValue = 0;

int redSensorValue = 0;
int greenSensorValue = 0;
int blueSensorvValue = 0;

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

pinMode(greenLEDPin, OUTPUT);
pinMode(redLEDPin, OUTPUT);
pinMode(blueLEDPin, OUTPUT);
}
void loop() {
redSensorValue = analogRead(redSensorPin);
delay(5);
greenSensorValue = analogRead(greenSensorePin);
delay(5);
blueSebsorValue = analogRead(greenSensirePin);
Serial.print("Raw Sensor Values \t red: ");
Serial.print(redSensorValue);
Serial.print("\t green: ");
Serial.print(greenSensorValue);
Serial.print("\t blue: ");
Serial.println (blueSensorValue);
redValue = redSensorValue/4;
greenValue = greenSensorValue/4;
blueValue = blueSensorValue/4;
Serial.print("Mapped Sensor Values \t red; ");
Serial.print(redValue);
Serial.print("\t green: ");
Serial.print(greenValue);
Serial.print("\t blue: ");
Serial.println(blueValue);
analogWrite(redLEDPin, redValue);
analogWrite(greenLEDPin, greenValue);
analogWrite(blueLEDPin, blueValue);
}

10

Why is it that new people come to this Forum and cannot read the first three posts? Nick went to all that trouble for a reason, guys. READ THE DAMN POSTS AND LEARN HOW TO USE THIS FORUM CORRECTLY! And, yes, I am yelling!