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Mine Exploration Forum

Author The LED is 50!
SimonRL

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Joined: 27/11/2005
Location: North Wales

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The LED is 50!
Posted: 10/10/2012 09:00:01
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BBC News wrote:

The light-emitting diode has brightened our lives for half a century - from lighting up the city streets at night, to decorating Christmas trees each December.

The LED started life in October 1962, as a single red illumination in a General Electric research lab in New York state.


http://www.bbc.co.uk/news/technology-19886534

I wonder if the original inventors every dreamt they'd be as bright as they are today?!

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Edd

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Joined: 02/07/2008
Location: Alderley Edge

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The LED is 50!
Posted: 10/10/2012 09:25:27
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A hell of a change from there original conception Smile


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NewStuff

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The LED is 50!
Posted: 10/10/2012 10:59:58
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simonrl wrote:

I wonder if the original inventors every dreamt they'd be as bright as they are today?!


I suspect that today's researchers will be amazed at what happens to them in the next 10-15 years, let alone the next 50!

I say Bring it on! I'll finally be happy the day I can light up certain chambers in Wrysgan with just my caplamp, and not cause the battery a small meltdown in the process.

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In your mines, Taking your pictures...
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Boy Engineer

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Location: Derby

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The LED is 50!
Posted: 10/10/2012 19:47:14
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Happy Birthday IP: 2.27.231.210
royfellows

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Joined: 13/06/2007
Location: Great Wyrley near Walsall

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The LED is 50!
Posted: 10/10/2012 20:41:08
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Simon if you are around.

Remember posting some years ago during the lamp building frenzy:
"Who will be the first to crack the 1000 lumens barrier"

I think it was Morlock who answered "Probably Roy" and he was right.
I have a lot to answer for
Laugh

EDIT
Chris Cowdery has produced a lamp with an output of 11300 lumens. Not a Typo.
I wont say how much it cost him to build or how long it will sustain full power

--

Whatever you find difficult do more not less, then it become easy.
IP: 78.148.241.79 Edited: 10/10/2012 20:47:34 by royfellows
sinker

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The LED is 50!
Posted: 10/10/2012 21:04:25
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royfellows wrote:


.....11300 lumens. Not a Typo.


Shocked

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IP: 31.54.180.130
ChrisJC

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The LED is 50!
Posted: 10/10/2012 21:14:36
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If you are interested, the info is here:
http://www.cowdery.org.uk/gloworm.php
It does 5 seconds at 11300lm, when it reduces to 6400lm until the chassis reaches 70degrees (about 5mins), when it drops to 400. It will last 8 hours at 400lm.

Some of the PDMHS / Masson saw it in action at Coniston / Carrock over the weekend, but still I don't have any particularly demonstrative underground photos.

It did light up entire chambers in Fron Boeth though.

To go back to topic, indeed LED's have come on along way!

Chris.
IP: 109.148.185.87
BertyBasset

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The LED is 50!
Posted: 11/10/2012 09:31:53
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Nice lamp Chris. Maybe a lamp running linux next? Actually I've got a Raspberry pi in one of my drawers. Could be a nice winter project - running in python. IP: 194.28.139.160
SimonRL

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The LED is 50!
Posted: 11/10/2012 09:39:44
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Awesome Chris Thumbs Up

I've seen it briefly but never in use underground Crying

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ChrisJC

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The LED is 50!
Posted: 11/10/2012 09:44:27
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BertyBasset wrote:

Nice lamp Chris. Maybe a lamp running linux next? Actually I've got a Raspberry pi in one of my drawers. Could be a nice winter project - running in python.


And I thought that running a 32-bit ARM processor in an LED torch was excessive!

Maybe my torch is the worlds first 32-bit torch.

Chris.
IP: 81.137.22.162
BertyBasset

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The LED is 50!
Posted: 11/10/2012 09:49:27
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I thought it might have been linux rather than a microcontroller when is saw it was a 32 bit arm processor. I'm still playing with lowly PIC16 series chips. IP: 194.28.139.160
SimonRL

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The LED is 50!
Posted: 11/10/2012 09:54:34
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ChrisJC wrote:

BertyBasset wrote:

Nice lamp Chris. Maybe a lamp running linux next? Actually I've got a Raspberry pi in one of my drawers. Could be a nice winter project - running in python.


And I thought that running a 32-bit ARM processor in an LED torch was excessive!

Maybe my torch is the worlds first 32-bit torch.

Chris.


You'll be running RISC OS on it next Chris Wink

The world's fist torch that can play !Zarch

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IP: 95.147.205.56 Edited: 11/10/2012 09:55:04 by SimonRL
ChrisJC

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The LED is 50!
Posted: 11/10/2012 10:08:14
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I'm using PIC16 at work, and it's like having a cactus inserted where the sun doesn't shine compared to using the ARM-Cortex-M series.

I did originally make a wish list for this torch, basing it on the possibilities given by the ARM chip. It included things like a video camera writing to micro-SD and 3-axis accelerometer & magnetometer for automatic surveying as you went along.

But I decided to 'get real' and just try to build the torch, and that took 18 months for something quite straightforward!

Chris.
IP: 81.137.22.162
BertyBasset

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The LED is 50!
Posted: 11/10/2012 13:38:00
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It'll be quantum computer torches next Cool IP: 194.28.139.160
sinker

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The LED is 50!
Posted: 11/10/2012 15:26:32
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ChrisJC wrote:


Maybe my torch is the worlds first 32-bit torch.

Chris.


No I have a 32-bit torch....a Petzl Zoom that I dropped down the shaft at Moel Fferna....the lens was in
at least 32 bits.... Laugh

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Onun bir meydan okuma degil büyük ölçüde daha önce yapilmis Çünkü ....
IP: 82.132.217.182
royfellows

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Joined: 13/06/2007
Location: Great Wyrley near Walsall

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The LED is 50!
Posted: 11/10/2012 15:57:33
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sinker wrote:

ChrisJC wrote:


Maybe my torch is the worlds first 32-bit torch.

Chris.


No I have a 32-bit torch....a Petzl Zoom that I dropped down the shaft at Moel Fferna....the lens was in
at least 32 bits.... Laugh

Laugh Laugh Laugh

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Whatever you find difficult do more not less, then it become easy.
IP: 78.148.241.79
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