Stuck on activating a relay

[ruilviana]

@paulhook

 Serial.begin(9600);        // initialize serial

  pinMode(ledblue, OUTPUT);      // initalize LED as an output
  pinMode(sensorblue, INPUT);    // initialize sensor as an input
  Serial.begin(9600);        // initialize serial

Hi
It doesn't affect the functionality but you initialized the serial 2 times.

And has two unnecessary brackets " { and } " at end code.

RV mineirin