LCD is Extremely Dim. Is This Normal?

I just ordered this LCD display from Adafruit: http://www.adafruit.com/products/181 and after soldered my LCD into place and I turned it on I noticed I had a really hard time reading it. I’m not too sure what’s causing this, but I know it shouldn’t look like this.

(This is what it looks like if I turn my potentiometer up)


Looks like you don't have the backlight connected or connected correctly.

How would I go about setting up my backlight? I posted my current schematic to hopefully shine some light on if I've got it wired up correctly.

Nevermind, I hooked up the last 2 pins on the LCD and it works now (it was the backlight). Thanks for the help!

Make sure you place a resistor in series with the backlight to limit the current to it, try 220 to 560 ohms.

LarryD: Make sure you place a resistor in series with the backlight to limit the current to it, try 220 to 560 ohms.

Unnecessary as long as you verify that R8 on the back of the LCD board is "101"; 100 ohms. It is very unusual, albeit not impossible, for it to be otherwise on a 5V LCD.

R9 (not always present) is 0.