Thanks for the help :). I am still very new to the language.
please help. I am trying to make a variable speed fan with a redboard but the code keeps coming back as 'else' without a previous 'if' error code. code below. help would be appreciated.
else if (val == 2)
else if (val == 3)
else
}
you have brackets and colons in the wrong place! I would advise you touch up on the syntax for the language...
if (val == 1){
digitalWrite(5, HIGH);
digitalWrite(12, LOW);
digitalWrite(16, LOW);
}
else if (val == 2){
digitalWrite(5, HIGH);
digitalWrite(12, HIGH);
digitalWrite(16, LOW);
}
else if (val == 3){
digitalWrite(5, HIGH);
digitalWrite(12, HIGH);
digitalWrite(16, HIGH);
}
else{
digitalWrite (5, LOW);
digitalWrite (12, LOW);
digitalWrite (16, LOW);
}
hope that helps...
if (val == 1);
Remove the semicolon
It is the only code that is executed conditionally when the test returns true
MarkT
April 7, 2020, 9:57am
4
A semicolon by itself is a null statement, rarely useful, although it can be used like this:
if (condition)
; // do nothing
else
do_something() ;
Which is a way of avoiding inverting the condition, its perfectly reasonable to do this instead:
if (!(condition))
do_something() ;
