I need some coding help please

[connerclark]

Im trying to do Project 6 in the Arduino projects book but I keep getting the same error and i could really use some help. here the error "Compilation error: 'SensorValue' was not declared in this scope" and here's my code:

int sensorValue;
int sensorLow = 1023;
int sensorHigh = 0;
const int LedPin = 8;

void setup() {

pinMode(LedPin, OUTPUT);
digitalWrite(LedPin, HIGH);
while (millis() < 5000) {
sensorValue = analogRead(A0);
if (SensorValue > sensorHigh) {
sensorHigh = sensorValue;
}
if (sensorValue < sensorLow) {
sensorLow = sensorValue;
}
}
digitalWrite(LedPin, LOW);
}

void loop() {

sensorValue = analogRead(A0);
int pitch =
map(sensorValue, sensorLow, sensorHigh, 50, 4000);
tone(8,pitch,20);
delay(10);
}

[UKHeliBob]

Welcome to the forum

@connerclark

here's my code:

Please follow the advice given in the link below when posting code, in particular the section entitled 'Posting code and common code problems'

Use code tags (the < CODE/ > icon above the compose window) to make it easier to read and copy for examination

https://forum.arduino.cc/t/how-to-get-the-best-out-of-this-forum

In my experience the easiest way to tidy up the code and add the code tags is as follows

Start by tidying up your code by using Tools/Auto Format in the IDE to make it easier to read. Then use Edit/Copy for Forum and paste what was copied in a new reply. Code tags will have been added to the code to make it easy to read in the forum thus making it easier to provide help.

[UKHeliBob]

        if (SensorValue > sensorHigh)

Is the name of the variable SensorValue or is it sensorValue ?

[cedarlakeinstruments]

You have both SensorValue and sensorValue. Lowercase or uppercase is significant, so those are actually two different variables. Choose one.

[connerclark]

Thank you so much I can't believe I missed that.