I've got LCD screen: 16x2, 1602A QAPASS.
The sketch I'm using is Hello World (and plethora of others in attempt to make the lcd light up)
I've been fighting with this LCD to light up as per tutorial is outlined. As soon as I connect any wire to the 5V the Arduino's lights go out. I've been trying countless of other tutorials, tried adding a pen or a 220K resistor both. Nothing.
It wasn't until I came across a random Google image that used three wires connected to the side of the LCD did my backlight turn on. But, that method doesn't really work since I want to show data on the lcd.
I have connected a power supply to the arduino. Arduino lights still turn off.
Why is this happening? What the heck can I do?