I have wired up an LCD twice. Still having the issue of no text on it. The LCD is on, because light is turned on, as well as the code, because i copied it and no error. I would like to know what are some issues that commonly happen. I'm a little new to arduino. I did also copy the circuit from a youtuber. I'm learning during the process. Help would be appreciated.
Most common problem is not using a potentiometer or wiring it wrong on the contrast pin.
I have facing same Problem and resolved..
LCD 3rd No pin VEE connect to Ground..
Installation & Troubleshooting
For problems with Arduino itself, NOT your project
If it's not an I2C, then bad soldering (or even not soldering) or not using a pot are common.
If it's an I2C, then wrong address is common.
'Light turned on' doesn't mean a darn thing. It's an LED. You'd have to try real hard to fail there.
Danny
All you are getting are guesses because you have not provided enough information for more specific help.
Don