How to fix all LCD problems - read this!

@liudr

Good tread ! That should be a "sticky" tread. When I started to learn about LCD's. I came across this web site : Arduino Tutorial - connecting a parallel LCD. So I began to wired up an LCD display I bought at Active Surplus. I test the LCD using the examples codes from the IDE examples folder. And I lean about the LCD codes intructions at LiquidCrystal - Arduino Reference. And do a little at a time.

These two sites should be mention so it help the newbies.