Laptop?

webstarxpress · Post by **webstarxpress** » Sun Feb 17, 2002 5:11 pm

hello, I am creating a car mp3 plyaer... I want to know if I use a laptop, is there a way of getting a powersource for the 40x2 display out of the laptop? In other words, how?

Sincerely, Jesse Middleton

Post by **Henry** » Sun Feb 17, 2002 5:40 pm

Just use the serial cable for the communication and then make sure to get a Wide Voltage option on the LCD and then just steal 12V from the car somewhere. Since most of the car runs on 12V it will be very easy.

webstarxpress · Post by **webstarxpress** » Sun Feb 17, 2002 6:04 pm

Okay, I also saw some way of powering the LCD with the serial port. Am I understanding this right? What do I have to do to make this work. If this is not going to work then do I just cut a floppy adapter from a desktop and run power from the cigarrett lighter to power the LCD?

Post by **Cheese** » Mon Feb 18, 2002 10:36 am

tapped 5V out of a USB port should be v. easy, just rip a connector off something

r.

webstarxpress · Post by **webstarxpress** » Mon Feb 18, 2002 10:48 am

I am not quite sure what you mean... What if the computer is a laptop and it doesn't have USB? Where can I get 5v from? What pin do I run the power to? How does that work?

Also, when I pull the power from the cigarette lighter, there are 2 lines, a positive and a negative. On the back of the LCD screen it takes a power connector with 4 wires. Where do I get the other two?

Thanks...

Post by **Cheese** » Mon Feb 18, 2002 10:58 am

On 2002-02-18 10:48, webstarxpress wrote:
I am not quite sure what you mean... What if the computer is a laptop and it doesn't have USB? Where can I get 5v from? What pin do I run the power to? How does that work?

Also, when I pull the power from the cigarette lighter, there are 2 lines, a positive and a negative. On the back of the LCD screen it takes a power connector with 4 wires. Where do I get the other two?

Thanks...

lol if the laptop doesn't have a USB port then you can't use a USb port

But even my old p133 lappie does, you sure yours doesn't?

The four power lines on the lcd are there only in spirit - so it's easy to interface with a floppy connector, on 5V lcds the 12v line isn't connected and two of the lines are earthed. I assume on the wide voltage the 5V line is missing. So you see there's only really two power connectors on the lcd

Cheers,

r.

<font size=-1>[ This Message was edited by: TheCheeseMan on 2002-02-18 10:59 ]</font>

webstarxpress · Post by **webstarxpress** » Mon Feb 18, 2002 3:11 pm

Alright, thanks... Btw, why are all of your posts edited Cheese?

PainZ · Post by **PainZ** » Mon Feb 18, 2002 3:33 pm

Prolly cause he made spelling mistakes

Post by **Cheese** » Mon Feb 18, 2002 5:18 pm

On 2002-02-18 15:33, PainZ wrote:
Prolly cause he made spelling mistakes

Yeah... I always forget to check before hitting the submit button

r.

Post by **Henry** » Mon Feb 18, 2002 10:49 pm

I always forget to check before hitting the submit button
r.

I do the same too often, that's why I'm taking engineering

You don't need to know how to spell!

Post by **Cheese** » Tue Feb 19, 2002 2:23 am

On 2002-02-18 22:49, Henry wrote:
I do the same too often, that's why I'm taking engineering You don't need to know how to spell!

lol most of the time it's just typos - still not used to this natural keyboard of mine

r.