I tried searching the forums and google but I couldn't seem to find an answer.
I just bought this http://www.amazon.com/gp/product/B008FWSH3C/ref=oh_details_o00_s02_i03
and plugged everything in and hooked it up to my computer. Upon plugging in the unit to the USB port the screen does not power up. I also have a 9vdc 650ma wall adapter, so I tried that as well. Still nothing. I noticed that there is a pot on the side of the shield, so I thought maybe this was a dimmer pot. I have adjusted it in both directions and nothing happens. So I unhooked everything and then loaded the Blink sample code. That worked just fine.......
So do I have a bad LCD unit? Bad Interface Board? Any suggestions?
Thanks in advance,