Show Posts
Pages: [1]
1  Using Arduino / Displays / Re: LCD2004 Help on: January 30, 2013, 08:46:14 pm
I have what appears to be the same LCD 4X20 display that I want to work with my Arduino Uno, rev. 3.
http://www.amazon.com/gp/product/B003B22UR0/ref=oh_details_o00_s00_i00
I followed the reply to mssg below, which suggested searching on 'LCD sainsmart', and I did.  I went through all of those messages and loaded all of the libraries.  Nothing worked, and I tried fixing the device address and typos in some of them, still with no success.  One of them did make the backlight flicker.  I have tried wiring it with SDA/SCL to the SDA/SCL on the Uno.  I also tried using A4/A5, reversing them. Nada.

I wrote to wiflish to see if he ever got it to work, got no reply.   

Thanks for any help.

Hello there, I'm completely clueless on what to do to get this LCD display working.
I'm a bit of a newbie to Arduino, and I don't know what to do.
--------------------------------------------------------------------------------------------
I got this
http://www.sainsmart.com/sainsmart-iic-i2c-twi-serial-2004-20x4-lcd-module-shield-for-arduino-uno-mega-r3.html
for Christmas, and I also have an Arduino Uno.

I've tried seeking internet help, and I wired it to my best ability, but the display's backlight glows by itself, or the display backlight glows and the grid of characters are all lit up.

I've read about these things called Arduino Shields? Do I require one to use this LCD display?
I'd much rather wire it directly from the Arduino Uno to the LCD2004.

Sorry if I'm not being clear, again I'm new to this, and not sure what to do.
Please ask questions if I'm not being clear.

I just need to know how to hook the Arduino Uno up to the LCD2004, and if I need any additional materials.
Thanks.
Pages: [1]