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Arduino
Arduino Forum Would it be possible to power an LCD with Arduino?
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  • lcd
  • led_backlight
  • diy
  • led
  • arduino
Related

Would it be possible to power an LCD with Arduino?

e14 Contributor
e14 Contributor over 13 years ago

Hi, I'm a second year CS student and EE-still doing 1st year courses- and have small knowledge of micro controllers experiences with Amtel AVR series.

I have started a DIY project where I got a couple of Chromebook Pixel's high resolution screens and using them to create a portable double monitor with touch interface thingy. It was going all fine until I found myself needing to manually power these LCDs-the data lanes and logics are completed, just the power.

 

The problem is that since this display uses the new eDP, it does not have ANY compatible LCD controller board, hence I need to find a way to adequately power it. I had a very small experience with Arduino Uno when me and friend of mine were using it to power RGB LED for his photovoltaics project, and I  realized perhaps maybe I can use a similar arduino board to power the LCD. I think this will work, but I have little to no electrical knowledge hence I want to ask you whether it would be possible at all. Of course it will take some time and many more tutorials, but this is a long term project and I wanted to know it was all possible before I buy the Arduino board.

 

I have linked a datasheet for the LCD below, just in case you are curious.

 

https://www.revo-sys.com/prodimages/LCD-Display-Panel/LG-12.9-LP129QE1-SPA1-LVDS-2560-1600-400-NITS.pdf

 

Max power draw is around 9W, and have seperate pins for the logic power and LED backlight.

 

PS: I know for a fact that there isn't a single arduino device that can supply that amount of power from the USB port. Any ideas? I'm thinking of connecting external power, however it needs to come from my QM77 motherboard to be portable. I have a range of options including ATX12V, many unused USB pins, even a DisplayPort 5V 500mA power.

 

 

Thank you for your time and attention.

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  • shobhitkukreti
    0 shobhitkukreti over 13 years ago

    If you mean, powering the LCD with arduino GPIO, then it is not possible. Although it is really possible to control the switching ON/OFF of the power supply which powers the LCD. This can be accomplished using a simple transistor circuit. However, since your dissipation is at 9 watts, you may want to use a solid state relay.

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