Arduino Forum

Using Arduino => Displays => Topic started by: kat24385 on May 31, 2013, 08:35 am

Title: LCD Not Working!
Post by: kat24385 on May 31, 2013, 08:35 am
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!
Title: Re: LCD Not Working!
Post by: HazardsMind on May 31, 2013, 03:02 pm
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).
Title: Re: LCD Not Working!
Post by: floresta on May 31, 2013, 03:48 pm
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