LCD 2X16 backlight voltage

Started by ewarner77 July 15, 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



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/ >




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/ >




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