floresta:
Here is a clearly pic of how I wired everything...
Look in the lower left box in the 'Description of Terminals' and you will see that the backlight must be supplied with no more than 4.5 Volts.
This means that you must use a series resistor to drop the voltage and at the same time limit the current through tbe LED backlight.
Don
I've recently tested to connect the backlight to the 3v pin on the arduino instead. But its the same. (Ive solder the wires on the backside of the LCD)
Could I have destoyed the backlight when I wired it to the +5V?
Will buy the headers tomorrow and solder it.