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Brazucs
I have no idea what my avatar is.
Super Elite (Last Title)
Joined: 31 Mar 2004
Posts: 3349
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 Posted: 02 Apr 2004 03:00:42 pm Post subject: |
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Does anyone know an easy way to backlight a TI-83 Plus unsilverized edition?
I've seen soo many different ways to do it on the net and was wondering if anyone actually did it and how...
Thanx All!
Last edited by Guest on 02 Apr 2004 03:01:03 pm; edited 1 time in total |
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DigiTan
Unregistered HyperCam 2
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Joined: 10 Nov 2003
Posts: 4468
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| Posted: 03 Apr 2004 02:37:34 am Post subject: |
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LED Sidelighting
This is a basic method that's also very effective. You can use several LED pairs and shine them into the screen from the corners. This will also scatter the light fairly well. I think this type is very promising because it's cheap, and you don't have to track down those rare EL sheets.
EL Backlighting
This kind is more impressive if you can pull it off without any damage. I'm nervous about trying this myself because it involves some "major surgery." If I remember right, you'll need to eventually slide the EL sheet between the LCD and its glass cover (under the plastic one). Also you have to do it without pulling out the "ribbon bus" that feeds into the LCD. My roommate *claims* he did this in high school, but I think he's full of it! 
To summarize, EL type is more impressive because it has that "factory-made" look. I don't know exactly how EL sheets work so that's about all I can say. But LEDs are alot less risky, plus you can choose what color to make the screen.
[edit]
Correction, you can choose the EL color too.
Last edited by Guest on 03 Apr 2004 02:47:38 am; edited 1 time in total |
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Awesome1
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Joined: 28 Jan 2004
Posts: 269
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| Posted: 03 Apr 2004 12:18:52 pm Post subject: |
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| on the LED one, it doesn't tell anything about the power supply, or a switch to turn it on or off. Do you know how to do any of that? |
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Arcane Wizard
`semi-hippie`
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Joined: 02 Jun 2003
Posts: 8993
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| Posted: 03 Apr 2004 12:38:00 pm Post subject: |
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| Aren't you supposed to connect them to the calc's batteries? |
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DigiTan
Unregistered HyperCam 2
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Joined: 10 Nov 2003
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| Posted: 03 Apr 2004 01:24:39 pm Post subject: |
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| Calc batteries should work. Maybe richfiles used plug-in jumpers for switching. |
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Awesome1
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Joined: 28 Jan 2004
Posts: 269
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| Posted: 10 Apr 2004 11:22:23 pm Post subject: |
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I know the leds don't need much juice to light up, wouldn't 6 volts be too much for the leds? Unless maybe u had one on each corner and side of the screen
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Jedd
1980 Pong World Champion
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Joined: 18 Nov 2003
Posts: 823
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| Posted: 11 Apr 2004 02:53:45 am Post subject: |
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If you put plexiglass behind the screen, you don't need 8 lights, because the light would spread through the glass. 2 or 4 would suffice.
And I think 6 volts would be too much for the LED's. But I would run them off a seperate battery source anyway. If you really want to use the 6v from the batteries though, it's not tough to throw in some resistors.
I'm thinking I might try this out. And if I break my calc in the process, just another excuse to get an 84+!
-J |
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Arcane Wizard
`semi-hippie`
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Joined: 02 Jun 2003
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| Posted: 11 Apr 2004 04:07:12 am Post subject: |
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| From my experience with LEDs they can easily take 6V. And you couild also connect it in such a way that it only get's 1.5V from one battery. |
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DarkerLine
ceci n'est pas une |
Super Elite (Last Title)
Joined: 04 Nov 2003
Posts: 8328
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| Posted: 11 Apr 2004 04:08:01 pm Post subject: |
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| How realistic is it to buy a backlighted TI somewhere? |
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agility
Calc Spammer
Calc Guru
Joined: 16 May 2004
Posts: 1266
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| Posted: 28 Jul 2004 12:19:52 pm Post subject: |
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| I've tried to backlight my TI83+. You can't do it with LED's; there's not enough room in there. Unless someone has a picture to prove me wrong and help me out here. |
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wrigley
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Joined: 19 May 2004
Posts: 399
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| Posted: 30 Jul 2004 02:12:30 pm Post subject: |
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LEDs will work on whatever voltage you buy them to be able to take, but they don't do to well with high Amps, connecting them directly to a battery will decrease the lifetime greatly, so you should really put in resistors, if you don't want them to burn out.
Last edited by Guest on 30 Jul 2004 02:13:07 pm; edited 1 time in total |
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agility
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| Posted: 30 Jul 2004 04:23:43 pm Post subject: |
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 Who are you talking to?
Anyways I solved the problem with the LED's not fitting inside of a TI 83+. |
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Arcane Wizard
`semi-hippie`
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| Posted: 30 Jul 2004 04:28:43 pm Post subject: |
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| How did you solve it? |
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agility
Calc Spammer
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| Posted: 30 Jul 2004 04:46:41 pm Post subject: |
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| Well, if I told you now then Kerm would try to steal my idea and use it in his CSA like he did with my RGB Screen. The little cheat... |
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Arcane Wizard
`semi-hippie`
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Joined: 02 Jun 2003
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| Posted: 30 Jul 2004 05:00:10 pm Post subject: |
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| All you figured out was how to get backlighting in there, you're not the first who figured that out. Right? |
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agility
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| Posted: 30 Jul 2004 10:14:39 pm Post subject: |
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| Who figured out how to get backlighting to fit inside of a TI 83+? And I'm not talking about the EL Panel thing. I mean all internal. Besides, I know that no one's tried my method before. |
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Arcane Wizard
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| Posted: 31 Jul 2004 03:54:26 am Post subject: |
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Everybody who has ever backlighted their calc has figured it out, including those who wrote tutorials on how to do it. How on earth would you do external backlighting? Doesn't it have to be inside the calc to be backlighting instead of just some LED near our calc so we can see a bit more of it in the dark?
Last edited by Guest on 31 Jul 2004 03:54:55 am; edited 1 time in total |
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agility
Calc Spammer
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Joined: 16 May 2004
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| Posted: 31 Jul 2004 07:56:14 am Post subject: |
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I want to see anyone who has pictures and/or a tutorial on how they got a backlit TI 83+.
Quote: How on earth would you do external backlighting?
The LED's are at the top of the screen and are very close to it, and they are nearly all 5000mcd so they are very bright and they will light up the screen. |
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Arcane Wizard
`semi-hippie`
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| Posted: 31 Jul 2004 08:01:01 am Post subject: |
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But that's not really backlighting in the literal sense of the word, right?
I mean that's the same thing as turning on the light in your room, only the lights are smaller and closer (hopefully  ) to the screen. |
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agility
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| Posted: 31 Jul 2004 08:02:56 am Post subject: |
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| Well, it's not true backlighting, but lots of companies pass it off as such, and everyone just considers it as backlighting. Also you could just do it internally and have a true backlight. |
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