My Nokia LCD 5110 isn't work (just blue screen from backlight)

Hello everyone, I'm new in arduino, and i have a project by using nokia lcd 5110 and i bought it yesterday. But when i connect it with my arduino like in this tutorial https://learn.sparkfun.com/tutorials/graphic-lcd-hookup-guide/hardware-assembly--hookup , the backlight is on but the screen is blank(nothing show up in there just a blue color from backlight). So can you please help me to solve this problem?

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0 michaelwylie over 10 years ago

I hate to state the obvious, but if it's one of those predone jobs then either it may be wired wrong or configured wrong. That's where I would look.
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0 Former Member over 10 years ago

actually i have changed the configuration but the lcd still same like that. And because of that i confused with this. And i want to ask, do i have to use level shifter ic for this lcd? or replace the level shifter ic with resistor?
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0 michaelwylie over 10 years ago in reply to Former Member

I'm not sure. I was merely speculating how I would troubleshoot it. I'm not familiar with the Arduino or that LCD.
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0 michaelwylie over 10 years ago in reply to Former Member

According to this link the basic Arduino is 5V and the display is 3V, so the level shifter is recommended. From your link:
"The easiest hookup is to connect the Arduino pins directly to the LCD. To allow for this easy hookup, you’ll need a 3.3V-operating Arduino like the 3.3V/8MHz Pro or 3.3V Pro Mini." I think I'd try the resistors first, since they're likely more handy than the level shifter. I would also check the continuity of those wires.
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0 saurocksall over 10 years ago

Hi Bob,

There are a few things that may have went wrong...

1). the LCD came defected.
2). you may have connected the Vcc of LCD to the 5 volts instead of 3.3 volts rail of arduino..
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0 saurocksall over 10 years ago

Post a clearer picture where I can see the LCD and Arduino both, with the jumper wires..
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0 saurocksall over 10 years ago

I also found a video tutorial on instructables.com you can watch it here http://www.instructables.com/id/How-to-use-a-Nokia-5110-84X48-LCD-display-with-you/
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0 Former Member over 10 years ago in reply to saurocksall

Ok, these are the pictures, can you please help me?
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0 Former Member over 10 years ago in reply to michaelwylie

Ok, i'll try your advise, thank you sir !
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0 saurocksall over 10 years ago in reply to Former Member
Hi Bob,
I don't know if you have noticed it or not but the pin configuration of your LCD and the LCD in the tutorial are different...

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