user50324: I have a LCD screen, and I wanted to use it with a Simon Says game that I am making. I tried the tutorial on the Arduino website, but it doesn't work. Then I tried another tutorial on Adafruit. On this one, the LCD screen seemed brighter which is good, but it also doesn't work.
What it is supposed to look like:

My code:
#include <LiquidCrystal.h>

LiquidCrystal lcd(7, 8, 9, 10, 11, 12);

void setup() {
  lcd.begin(16, 2);
}

void loop() {
  lcd.print("Test!");
  delay(500);
  lcd.clear();
  delay(500);
}

I have verified that the wiring is correct on the official version and the Adafruit version, and my screen is brand new from the kit, so what is wrong?
Edit 1:
Let me define "doesn't work." I can turn the potentiometer, but nothing changes. I can't even see white rectangles or even a single pixel on the display. It is blank. Absolutely nothing to see other than the blacklight, which does work.
Edit 2:
Turns out that the diagram was wrong. Needed to move the potentiometer 1 pin to the right, now it works!

user50324: Turns out that the diagram was wrong. Needed to move the potentiometer 1 pin to the right, now it works!

50324: <p>I have a LCD screen, and I wanted to use it with a Simon Says game that I am making. I tried the tutorial on the Arduino website, but it doesn't work. Then I tried another tutorial on <a href="https://learn.adafruit.com/adafruit-arduino-lesson-11-lcd-displays-1/" rel="nofollow noreferrer">Adafruit</a>. On this one, the LCD screen seemed brighter which is good, but it also doesn't work.</p>

<p><strong>What it is supposed to look like:</strong>
<a href="https://i.stack.imgur.com/nI573.jpg" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/nI573.jpg" alt="enter image description here"></a></p>

<p><strong>My code:</strong></p>

<pre><code>#include &lt;LiquidCrystal.h&gt;

LiquidCrystal lcd(7, 8, 9, 10, 11, 12);

void setup() {
  lcd.begin(16, 2);
}

void loop() {
  lcd.print("Test!");
  delay(500);
  lcd.clear();
  delay(500);
}
</code></pre>

<p>I have verified that the wiring is correct on the official version and the Adafruit version, and my screen is brand new from the kit, so what is wrong?</p>

<p><strong>Edit 1:</strong></p>

<p>Let me define "doesn't work." I can turn the potentiometer, but nothing changes. I can't even see white rectangles or even a single pixel on the display. It is blank. Absolutely nothing to see other than the blacklight, which does work.</p>

<p><strong>Edit 2:</strong></p>

<p>Turns out that the diagram was wrong. Needed to move the potentiometer 1 pin to the right, now it works!</p>
 50324: <p>Turns out that the diagram was wrong. Needed to move the potentiometer 1 pin to the right, now it works!</p>
