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Topic: LCD Not Working! (Read 473 times) previous topic - next topic

kat24385

I am following this tutorial:

http://arduino.cc/en/Tutorial/LiquidCrystalDisplay

I have wired it exactly the same and used the exact same code for the program but my display shows nothing.  The backlight works but nothing happens when I upload the sketch.

I even bought a new one because I thought it might be broken but it doesn't work. :-(

I have this lcd display:

http://www.amazon.com/microtivity-IM162-Module-Black-Backlight/dp/B0059H616G/ref=pd_sbs_misc_5

Please help!! I have tried so many things but nothing works!

HazardsMind

#1
May 31, 2013, 03:02 pm Last Edit: May 31, 2013, 04:01 pm by HazardsMind Reason: 1
Post your code and a good picture of your connections. Its highly unlikely its the LCD, so there may be an issue with the arduino (connection wise).
My GitHub:
https://github.com/AndrewMascolo?tab=repositories

floresta

Quote
I have wired it exactly the same and used the exact same code for the program but my display shows nothing. 

I've heard that before.

Quote
The backlight works but nothing happens when I upload the sketch.

The display should show 'something' even without running a sketch.  This implies that your contrast setting (LCD pin 3) is incorrect so you must start there. 

With pins 1,2,3,15, and 16 connected you should be able to vary the potentiometer and go from a blank screen (pin 3 = 5v) to a single row of blocks (pin 3 = 0v).  If you can't do that then there is no sense trying to run a sketch.


Don

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