04-07-2003, 09:49 PM
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they say im slooooow eh?
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Join Date: Nov 2002
Location: canada... eh?
Posts: 1,255
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My calculator has LEDs in it!
One day at school, I was bored, and I happened to have a knife un my binder. (just happened to have? HA!) And I used the screwdriver on it, and took apart my calculator. It had 2 LEDs in it! So, when I got home, I took them out, and it still works fine! Just earlier today, I accumulated another calculator that I was supposed to give someone who I didn't even know. I took it home, and took the LEDs out of it, and IT still works fine!
The calculators I got these LEDs from are called 'Texas Instruments' just for those who wanted to know.
Anyways, they are nice, small LEDs, and would be PERFECT for underglow lights on a bit. Just thought I'd take a couple pics of em too, just for good measure
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04-07-2003, 09:50 PM
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they say im slooooow eh?
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Join Date: Nov 2002
Location: canada... eh?
Posts: 1,255
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The second:
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04-07-2003, 09:53 PM
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they say im slooooow eh?
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Join Date: Nov 2002
Location: canada... eh?
Posts: 1,255
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A little side note:
If you do this to your calculator, and it doesn't work, it's ok! Where you unsoldered your LEDs, those two contacts should get soldered together. If it still doesn't work, just unsolder one of the two, and if it still doesn't work, resolder the one you just unsoldered, and unsolder the other one. If you need more help, I can take some pics.
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04-08-2003, 09:21 AM
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TinyRC Pro
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Join Date: Apr 2003
Location: Carbondale, IL
Posts: 20
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Saying that its a Texas Instruments calculator only narrows it down to about 100. Might wanna include the number on the front. FOr example, my graphing Calculator is Texas Instruments TI-83Plus.
~Mike
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04-08-2003, 04:51 PM
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they say im slooooow eh?
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Join Date: Nov 2002
Location: canada... eh?
Posts: 1,255
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The one that I recently took em out of was a TI-30, and I think mine was in the 20's.
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04-13-2003, 06:34 PM
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GaN: Blue
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Join Date: Dec 2002
Location: Inside your blue/white LEDs
Posts: 78
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I've noticed that the TI-32's have leds too. I wonder what they're for?
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04-13-2003, 06:35 PM
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they say im slooooow eh?
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Join Date: Nov 2002
Location: canada... eh?
Posts: 1,255
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Well, to me, they are absolutely useless. You can't see them or nothing, so I took mine out, and my calculator still works fine.
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04-13-2003, 06:51 PM
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GaN: Blue
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Join Date: Dec 2002
Location: Inside your blue/white LEDs
Posts: 78
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Maybe they ran out of regular diodes.
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04-13-2003, 08:20 PM
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they say im slooooow eh?
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Join Date: Nov 2002
Location: canada... eh?
Posts: 1,255
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Lol, I doubt that one
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04-14-2003, 12:41 AM
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Poor Student
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Join Date: Dec 2002
Location: Greenville, NC
Posts: 216
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so do they light up? what color do the clear ones glow?
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04-14-2003, 05:05 PM
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they say im slooooow eh?
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Join Date: Nov 2002
Location: canada... eh?
Posts: 1,255
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They work, but They don't light up in the calculator, I tried all the buttons, but nothing happened. They all go red. Even the clear ones.
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07-06-2003, 12:33 AM
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The Master Of The Bit's
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Join Date: Mar 2003
Location: Jax. FL.
Posts: 80
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Use SMT led's to make under car lights. . .
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Gotta be rollin on dubs dawg. . . .
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07-06-2003, 03:15 PM
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TinyRC Pro
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Join Date: Apr 2003
Location: Carbondale, IL
Posts: 20
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The LED's inside the case that aren't visible from the outside probably help the manufacturers to test the calculators in the factory before the case goes on. The board, before it even gets its buttons and screen probebly passes by a person on the assembly line and they look to see if it blinking or it might even blink a certain pattern. If its not, then the board gets scrapped. After the testing process is complete, the part of the circuit that makes the led's blink for testing is disabled. Led's dont cost very much so they just leave em in there.
Thats my guess....
~Mike
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07-06-2003, 11:18 PM
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The Master Of The Bit's
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Join Date: Mar 2003
Location: Jax. FL.
Posts: 80
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Quote:
Originally posted by MrMikey83
The LED's inside the case that aren't visible from the outside probably help the manufacturers to test the calculators in the factory before the case goes on. The board, before it even gets its buttons and screen probebly passes by a person on the assembly line and they look to see if it blinking or it might even blink a certain pattern. If its not, then the board gets scrapped. After the testing process is complete, the part of the circuit that makes the led's blink for testing is disabled. Led's dont cost very much so they just leave em in there.
Thats my guess....
~Mike
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Geeze. . .thats quite a long train of thought there. . . i wouldnt have wasted my time on that i would think of what to do next to my bit
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Gotta be rollin on dubs dawg. . . .
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07-07-2003, 07:40 PM
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isk8element too.
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Join Date: Dec 2002
Location: in a cardboard box under the highway
Posts: 755
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i have to agree with mikey. that is probably how they make sure they work. and that was very well thought out.
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