Skybyte wrote:

> My Quetsion: LCD has 14 pins which I am using. pin 1=GND, pin 2=+5V,
> pin3=Contrast. (and other pins...)

Have you verifed that the contrast is functioning?

> But what do I do with the 2 blobs of solder on the right hand  side of the
> LCD? It says Anode and Cathode. Is this the connection for the backlight,
> XOR is it the main +5V power connection which HAS to be connected?
> Currently it's left open.

These are the backlight pads and have no effect on the LCD portion of the
module. These may be required to control the backlight.  Whatever you do, don't
assume that you can just hook these pads straight to you power supply.  I tried
this and found that without a current limiter, the backlight LEDs draw over 3/4
amp from my 5V supply. That's when I discovered that the module I was using had
an onboard current limiting resistor hooked to +5V so I didn't need to use these
pads.  I also discovered some jumpers on the module  which allow the backlight
to be disconnected from the onboard supply.  This is usefull if you want to
control the backlight brightness, or run the backlight from another supply.  For
instance, on one of my designs, I pulse width modulate the backlight source to
allow the user to control the brightness of the backlight.

Good Luck,
    Roger