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Calculator Modifications =>
Calculator Hardware, Electronics, Robotics
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Darth Android
DragonOS Dev Team
Bandwidth Hog
Joined: 31 May 2003
Posts: 2104
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 Posted: 02 Dec 2003 12:59:36 pm Post subject: |
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| dang those are bright. most are only aroung 50 MCD |
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NextPerception
Member
Joined: 08 Sep 2003
Posts: 203
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| Posted: 21 Dec 2003 07:50:58 pm Post subject: |
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yah I got a 10 dollar radioshack gift card and can probably get this project under way again.
I will have to shut my eyes while I walk past the zip zap rc cars though... |
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NETWizz
Byte by bit
Bandwidth Hog
Joined: 20 May 2003
Posts: 2369
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| Posted: 22 Dec 2003 03:39:20 am Post subject: |
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Or you could just buy them.'
I had a white LED. It had a sort of blueish tint to the light because the led produced blue light, which would hit a white phosphor to give off white light.
Anyway, it was kind of neat, so I went 3.6 v
4.5 v
at 6 it was almost all blue, but it was a bright
I then tapped a 9v for about a second and it got hot but was brigter.
I connected the 9v, and it was terribly bright, then it dimmed, turned nasty orange, and started smoking. Then quit. |
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Jedd
1980 Pong World Champion
Elite
Joined: 18 Nov 2003
Posts: 823
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| Posted: 07 Jan 2004 01:16:57 am Post subject: |
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| LED's never go out. But with too much voltage they burn out, and you can never use them again. If you want to use a 9v you have to use a resistor. |
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EnderWiggin
Advanced Newbie
Joined: 10 Dec 2003
Posts: 98
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| Posted: 18 Jan 2004 10:14:43 pm Post subject: |
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(If any body still checks this topic...)
Has any one made a GOOD working calc light yet? |
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DigiTan
Unregistered HyperCam 2
Super Elite (Last Title)
Joined: 10 Nov 2003
Posts: 4468
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| Posted: 18 Jan 2004 11:05:51 pm Post subject: |
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My roommate *claims* he used the 'scatter method' I mentioned when he was in high school. Frankly though, I think he's full of it.  |
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NextPerception
Member
Joined: 08 Sep 2003
Posts: 203
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| Posted: 22 Jan 2004 05:06:20 pm Post subject: |
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| i have seen the little worm light things for gameboy and mabye i could adapt one of those |
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EnderWiggin
Advanced Newbie
Joined: 10 Dec 2003
Posts: 98
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| Posted: 23 Jan 2004 03:35:17 pm Post subject: |
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| The game boy lights are pretty expensive though just to cut it up and modify it |
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Molyme
Newbie
Joined: 24 Jan 2004
Posts: 4
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Spyderbyte
Advanced Member
Joined: 29 May 2003
Posts: 372
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| Posted: 24 Jan 2004 01:17:50 pm Post subject: |
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Well the original post mentioned that hew had just epoxied his case shut, so he would like not to have to open it. But if you're going to go to the trouble of the light above, why not use and el panel? The old topic at cirrus is here.
Spyderbyte |
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Bluefire
Member
Joined: 18 Jan 2004
Posts: 186
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| Posted: 28 Jan 2004 05:19:23 pm Post subject: |
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ive read this post and decided to come up with my own external worm light for the calc, its sorta big but, hey! it works and cost less than 10$ ill have pics up as soon as my digital camera works again, but to give a basic overview, its a switch and batteries on a small thin peice of plywood that uses velcro to attach to the back of the calc and a big worm light with two rectangular greed LEDs on the end. All in all, it looks sorta crappy, but also as soon as i get spray foam (alot of things i need to get around to doing  ) i will spray it over all but the battery holder and sand it down to a nice looking square. it will look pretty good when im done  |
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Molyme
Newbie
Joined: 24 Jan 2004
Posts: 4
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| Posted: 31 Jan 2004 05:55:11 pm Post subject: |
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Bluefire wrote: ive read this post and decided to come up with my own external worm light for the calc, its sorta big but, hey! it works and cost less than 10$ ill have pics up as soon as my digital camera works again, but to give a basic overview, its a switch and batteries on a small thin peice of plywood that uses velcro to attach to the back of the calc and a big worm light with two rectangular greed LEDs on the end. All in all, it looks sorta crappy, but also as soon as i get spray foam (alot of things i need to get around to doing ) i will spray it over all but the battery holder and sand it down to a nice looking square. it will look pretty good when im done
Ok. Tell me when you're done. Cant wait. |
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