knuckles,The needed information is:- the full sketch being used- A clear photo that shows all the wiring
he has the same problem as me, and i have noted the stern instructions that all the wires should be soldered to the LCD ,but having looked at the videos on youtube regarding connecting UNO to LCD ,none of them are soldered ,just having wires plugged in to a breadboard and they are all working just fine !so how do you explain that ?here is one thats the same as mine except no hello world display http://www.youtube.com/watch?v=2qfZPYmIo94
You have hijacked someone else's thread. This is rude.
theyre all wired up as the youtube example above ,all very simple stuff
do you think i am stupid
i am chucking them back in the shoebox till next year i cant afford to waste any more time on these LCD displays .the display on the Pololu orangatan works ok for now .i might try a few new ones next year in case theyre faulty .thanks for your input anyway
situation now resolved after i bought a cheapie display of ebay ,it was a 5 minute job to get it working ,looks like a faulty display was the problem.all sketches working fine with the new display .
Something else to consider.When you see the row of pins start at #15 & #16, then 1-14, it might be a non-backlit LCD display.I have several different 16x2 character displays, and of the 3 that are not backlit, 2 have the goofy pin orientation.With those pin 15 & 16 are not connected. Pin 1 & 5 - groundpin 3 - 10k pot OR resistor to ground (8k-9k)pin 2 - 5vpins 4,6,11-14 connected to arduino digital pins Adafruit has a wonderful tutorial which I still use as a reference. Never hurts to double check connections before heating the iron.http://learn.adafruit.com/character-lcds/wiring-a-character-lcd