I'm starting the second project and get the response "void setup()" as an error. I've written all the code as it is (or as I think it is) in the book, but something is wrong. "void setup()" is the error I get when I include the text from the top shaded box on page 37 of book:
void setup () {
}
void loop () {
}
When I delete the text from the top shaded box on page 37, I get this error instead: "switchState" was not declared in this scope.
I considered starting with code in the second shaded box because it has a "1" next to the first line... my thinking is this should be the first line of code. Still, no-worky.
With this error, "switchState" was not declared in this scope, the following line is highlighted in yellow: if (switchState == LOW) {
How do I get this code to work? The on-line videos of the code for this project at RS look different than what's in the book, but I've got the book and want to use it for instruction. Thanks.
If anyone has the same problem, I found code for this project by clicking A) Arduino icon, B) File, C) Examples, D) 10.StarterKit, and then E) p02_SpaceshipInterface
Uploading this sketch made made project #2 work. It looks like the codes for all projects are listed here, and don't have to be typed by the user.
it gave me a different issue i wrote the code from the book like this:
int switchState = 0;
void setup() {
pinMode (3,OUTPUT);
pinMode (4,OUTPUT);
pinMode (5,OUTPUT);
pinMode (2,INPUT);
}
void loop(){
switchState = digitalRead(2);
// this is a comment
if (switchState == LOW);{
digitalWrite(3, HIGH);
digitalWrite(4, LOW);
digitalWrite(5, LOW);
}
else{
digitalWrite(3, LOW);
digitalWrite(4, LOW);
digitalWrite(5, HIGH);
delay(250);//wait for a quarter second
//toggle the LEDs
digitalWrite (4, HIGH);
digitalWrite (5, LOW);
delay(250);
}
}
and it gave error compiling stating "else without previous if" ???????
If you look closely, I believe your problem is with a misplaced semicolon on the line with your if statement:
if (switchState == LOW);{
should be
if (switchState == LOW) {
can someone tell me whats wrong here please because when I click to verify its giving me the void setup() { error.....thanks
int switchstate = 0;
void setup() {
pinMode(3,OUTPUT);
pinMode(4,OUTPUT):
pinMode(5,OUTPUT);
pinMode(2,INPUT);
}
void loop() {
switchstate = digitalRead(2);
// hi im awesome
if (switchstate == LOW) {
// botton is not pushed
digitalWrite(3, HIGH); // green led
digitalWrite(4, LOW); // red led
digitalWrite(5, LOW); // red led
}
else { // the button is pressed
digitalWrite(3, LOW);
digitalWrite(4, LOW);
digitalWrite(5, HIGH);
delay(250); // wait quarter second
// toggle leds
digitalWrite(4, HIGH);
digitalWrite(5, LOW);
delay(250);
}
} // go back to loop
I am having the same problem. 'Switchstate' was not declared in this scope. I have read these tips posted and still have not figured it out. I know you can load the preprogrammed version. But I am learning the commands and wanted to do it all myself. I even tried to copy and paste the correct code over and still error. Has anyone figured this out yet?
I can't see your code from here so would you care to post it? And please read the stickie on forum etiquette by Nick Gammon at the top of the board before doing so.
hello soo i tripple checked it and it doesn't work
can somebody please tell me what is wrong with it int switchState = 0;
void setup(){
pinMode(3, OUTPUT);
pinMode(4, OUTPUT);
pinMode(5, OUTPUT);
pinMode(2, INPUT);
}
void loop(){
switchState = digitalRead(2);
// this is comment
if (switchsState == LOW) {
//button is not pressed
digitalWrite(3, HIGH); // green LED
digitalWrite(4, LOW); // RED LED
digitalWrite(5, LOW); // red led
}
else { // button pressed
digitalWrite(3, LOW);
digitalWrite(4, LOW);
digitalWrite(5, HIGH);
delay(250); //wait for a quarter second
//toggle the leds
digitalWrite(4. HIGH);
digitalWrite(5, LOW);
delay(250); //wait for a quarter second
}
}