I have been searching the interwebs and this forum for a little over 2 hours now and I am just plain stumped. I wired and uploaded the Example HelloWorld sketch for the LiquidCrystal library. It was working fine displayed to the screen. I uploaded it a few more times each saying different things to get a feel for it. Great awesome, working... I then rewired it and reuploaded... Stopped working. I know what you are thinking, check the wires, check the wires and check the contrast pot. Well did that, did that and did that. I uploaded a few modified sketches and nothing. Went back to the HelloWorld example and there it is working on the display. I then tried to go back to another example, write to the display using the serial monitor. And all I get is garbled text. Thing about it is the characters are not random, when I type 'a' I get some set 'b' will give me something and it's always the same crap characters that are displayed.
I am now back at the example LCD HelloWorld and it doesn't even display anything (NOTE: I commented out the stuff that incremented the time, my loop() method is empty) With that code in place it would display garbled text on the first line and seem to update every second, I am assuming because that is when the second ticker is suppose to update. LCD is from sparkfun http://www.sparkfun.com/commerce/product_info.php?products_id=709
Data sheet for my LCD http://www.sparkfun.com/datasheets/LCD/GDM1602K.pdf
Arduino Board Modern Devices RBBB with atmega 328, uploading with their USB BUB.
Running Arduino v0018 on Window 7.
EDIT: Well I went away from it for about 15 minutes and came back wired everything directly into the lcd with no breadboard between the lcd and the arduino. BTW forgot to mention I have female headers on both the arduino and lcd. I am still trying to figure out why it went wonkers, I am going to rewire it to the bread board and see if it still works. Also checked the pins it was assigning the writing to.
EDIT2: Rewired back to the breadboard and everything seems to be fine. Again still wondering what was going on. My best guess is that the memory got corrupted (On LCD) and time out from power seemed to fix that. Might have even been in arduino itself, possible a timing issue with the library or the chip.