10 replies to this topic

[Daruosh]

Do you know how can I add backlight option to my CP?
I know someone that add backlight for TI calcs.
Check out: Backlight Page

It's amazing

[TheKingChaos]

Does someone dare?
Because I would not dare
Not for the present time

[mkanter]

you may buy some 2.5 mm white leds wire them together and clue them at the edge of the display (the screws are very small: 2mm or 1.5mm)

if you find out the power line (cummonly an line that is gnd if switched on and n/c if turned off). then you connect the leds with this line or you attach an external switch and connect the leds directly to the battery contacts.

NOTE: YOU WILL LOSE YOUR GARANTEE IF YOU OPEN THE CLASSPAD!!!

[qwerty841]

Maybe you could just get one of these...
http://www.classpad....&products_id=35

[Daruosh]

I meant BACKLIGHT. Like PV backlight. By some revers engineering in PV I would add BACKLIGHT to my CP

[SoftCalc]

If you're brave, and know your way around with a soddering iron
you can try it yourself . Here are some links to other calculators/handhelds that people have added backlights for...

Basic example using a TI.
http://richfiles.sol.../Backlight.html
These plans are pretty general, which means they could be easily be applied to a Casio calculator. Of course it also means you need to figure out the specific stuff yourself.



HP 200LX palmtop (made ~1995, long since discontinued)
http://www.daniel-he...klight/install/
This web page applies to the HP 200LX, but again it could be applied to the Casio ClassPad. This web page has some really good pictures illustrations, a must read if you plan on trying this.

General Kit
http://www.backlight4you.com/
This company that offers a generic backlighting kit (the one used in the HP 200LX example above). They pretty much just sell you the parts.

[SoftCalc]

You could buy a ClassPad RM, which has an external LCD for an overhead display. You can then use one of these light boxes to see it clearly.

http://www.loganelec...om/lightbox.htm

Taken literally, this would be a backlight

[Daruosh]

Tnx 4 ur valued info.
I've take apart my PV and now I'm trying to find out how its backlight works.

[Nurhidayat]

what is it for??

[SoftCalc]

what is it for??

A backlight?.... it is an illuminated display. The LCD on the ClassPad doesn't have the best contrast. A blacklight is a series of LEDs (light emitting diodes) that shines light from behind the display.

Check out an example below to see what a difference it makes...

[PJay]

I meant BACKLIGHT. Like PV backlight. By some revers engineering in PV I would add BACKLIGHT to my CP

I need it REALLY ! Please help me ...
It's very good for night. If you can install it on CP, please tell me !