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Discussion Groups | BasicX | LCD 2X16 backlight voltage

Discussion forum for the BasicX family of microcontroller chips.

LCD 2X16 backlight voltage - ewarner77 - Jul 15 17:59:00 2002

I am working on a project where board space is a premium and I want
to run on a 9V battery. I am using the LCD 2X16 display and want to
be able to hook up the backlight. I am currently using the onboard
voltage regulator on the BASIC-X to run the LCD, but not the
backlight. I am wondering what is the maximum voltage the backlight
on this device will take??? Can I hook it up to 9V? Do I need a
separate voltage regulator? Can I simply put a resistor between the
9V and the backlight? If so any ideas on what the value should be?

Any help is greatly appreciated.

Thanks,
Eric Warner




_____________________________
 Free pdf download: Introduction to Embedded Systems.


Re: LCD 2X16 backlight voltage - Chris Harriman - Jul 16 16:35:00 2002

Eric,

Yes, you can power the LED backlight with a 9v battery.
No regulator is needed. Connect your 9v + to the LEDSV+
pin and it's ground to the gnd pin.

Power the rest of the LCD with +5 at the +5 pin and gnd. Regards,

Chris ----- Original Message -----
From: "ewarner77" <>
To: <>
Sent: Monday, July 15, 2002 3:59 PM
Subject: [BasicX] LCD 2X16 backlight voltage > I am working on a project where board space is a premium and I want
> to run on a 9V battery. I am using the LCD 2X16 display and want to
> be able to hook up the backlight. I am currently using the onboard
> voltage regulator on the BASIC-X to run the LCD, but not the
> backlight. I am wondering what is the maximum voltage the backlight
> on this device will take??? Can I hook it up to 9V? Do I need a
> separate voltage regulator? Can I simply put a resistor between the
> 9V and the backlight? If so any ideas on what the value should be?
>
> Any help is greatly appreciated.
>
> Thanks,
> Eric Warner >
> ">http://docs.yahoo.com/info/terms/ >