user27080: UPDATE: If I could I'd downvote myself. I'm a web developer and as I see that my job will be eaten, I'm trying to expand my skill set. Sometimes I wish I had a second pair of eyes or https://en.wikipedia.org/wiki/Rubber_duck_debugging

Previously I was asking which sensor use to measure the light: Which sensor to detect light?
Here is a short video showcasing my issue: https://www.youtube.com/watch?v=VGs_Ax_wlbg
Super simple .INO sketch from https://tkkrlab.nl/wiki/Arduino_KY-018_Photo_resistor_module
int sensorPin = A5; // select the input pin for the potentiometer
int ledPin = 13; // select the pin for the LED
int sensorValue = 0; // variable to store the value coming from the sensor
void setup() {
  pinMode(ledPin, OUTPUT);
  Serial.begin(9600);
}
void loop() {
  sensorValue = analogRead(sensorPin);
  digitalWrite(ledPin, HIGH);
  delay(sensorValue);
  digitalWrite(ledPin, LOW);
  delay(sensorValue);
  Serial.println(sensorValue, DEC);
}

I'm worried that my sensor readings are pretty much the same - in shade, brighten up by green laser... 
Am I doing it right?
Are values from the sensor in the expected range?
Alternatively: is there any more sensitive sensor I should buy that will tell me more reliably if the there is green laser light pointing at it?

user27157: ***** ITS ANALOG 5 not DIGITAL 5 *****
Also try doing this:
delay(sensorValue*10);

The times 10 will help show the differences between each value.

27080: <p><strong>UPDATE:</strong> If I could <strong>I'd downvote myself</strong>. I'm a web developer and as I see that my job will be eaten, I'm trying to expand my skill set. Sometimes I wish I had a second pair of eyes or <a href="https://en.wikipedia.org/wiki/Rubber_duck_debugging" rel="nofollow noreferrer">https://en.wikipedia.org/wiki/Rubber_duck_debugging</a></p>

<hr>

<p>Previously I was asking which sensor use to measure the light: <a href="https://arduino.stackexchange.com/questions/29758/which-sensor-to-detect-light">Which sensor to detect light?</a></p>

<p>Here is a short video showcasing my issue: <a href="https://www.youtube.com/watch?v=VGs_Ax_wlbg" rel="nofollow noreferrer">https://www.youtube.com/watch?v=VGs_Ax_wlbg</a></p>

<p>Super simple .INO sketch from <a href="https://tkkrlab.nl/wiki/Arduino_KY-018_Photo_resistor_module" rel="nofollow noreferrer">https://tkkrlab.nl/wiki/Arduino_KY-018_Photo_resistor_module</a></p>

<pre class="lang-c++ prettyprint-override"><code>int sensorPin = A5; // select the input pin for the potentiometer
int ledPin = 13; // select the pin for the LED
int sensorValue = 0; // variable to store the value coming from the sensor
void setup() {
  pinMode(ledPin, OUTPUT);
  Serial.begin(9600);
}
void loop() {
  sensorValue = analogRead(sensorPin);
  digitalWrite(ledPin, HIGH);
  delay(sensorValue);
  digitalWrite(ledPin, LOW);
  delay(sensorValue);
  Serial.println(sensorValue, DEC);
}
</code></pre>

<p>I'm worried that my sensor readings are pretty much the same - in shade, brighten up by green laser... </p>

<p><strong>Am I doing it right?</strong></p>

<p><strong>Are values from the sensor in the expected range?</strong></p>

<p>Alternatively: is there any more sensitive sensor I should buy that will tell me more reliably if the there is green laser light pointing at it?</p>
 27157: <p>***** ITS ANALOG 5 not DIGITAL 5 *****</p>

<p>Also try doing this:</p>

<pre><code>delay(sensorValue*10);
</code></pre>

<p>The times 10 will help show the differences between each value.</p>
