Author Topic: Design your most expensive LED Blinky!  (Read 14691 times)

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Offline Zeyneb

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Design your most expensive LED Blinky!
« on: August 24, 2015, 11:34:34 pm »
Let’s assume you’re working for some big American defense company and experience this Dilbert situation:



Instead of the mousepads order you convinced your boss to demonstrate your overengineering skills in the most expensive LED blinky circuit!

You are getting the lead in this project as an EE.

Please ensure you sent as much money down the drain as possible with your design. Please also add as much unnecessary complexity as possible. I’d suggest you would hire methodology consultants as well for the most trivial elements.

However keep it to the field of electronic engineering. How does your design look like and which components would you be using?

Let’s have some laughs!
« Last Edit: August 24, 2015, 11:48:46 pm by Zeyneb »
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Offline ConKbot

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Re: Design your most expensive LED Blinky!
« Reply #1 on: August 25, 2015, 03:07:30 am »
I'd start looking into making an intrinsically safe, explosive environment rated strobe. You think defense stuff is expensive, oil/gas/mining specialized equipment can be even more so due to the smaller market.

That being said, luminous devices CBT140 would be a good starting point for a LED.
 

Offline alexanderbrevig

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Re: Design your most expensive LED Blinky!
« Reply #2 on: August 25, 2015, 03:15:06 am »
I'd waste it all on R&D because of my requirements to be World Class in green energy. We need to source the best LED and a very precise resistor and low ESR capacitor.

In fact, I think we would hire someone to make an ASIC for the LED blink RC timing, then have them make the LED with the tiny ASIC already on them. Given they can meet the specs for the worlds best resistor and capacitor (of course they will! their contract says so after all).

Now it's time for me to align with the marketing department, and I'm sure they will have meaningful input for the progress of our product....  :blah:
« Last Edit: August 25, 2015, 03:17:39 am by alexanderbrevig »
 

Offline SL4P

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Re: Design your most expensive LED Blinky!
« Reply #3 on: August 25, 2015, 03:57:35 am »
Don't forget the international junkets travel - to explore supplier capabilities and new products.
(I've done this before!)
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Offline alexanderbrevig

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Re: Design your most expensive LED Blinky!
« Reply #4 on: August 25, 2015, 04:01:46 am »
Don't forget the international junkets travel - to explore supplier capabilities and new products.
(I've done this before!)

You're hired on my imaginary team as Chief #3 Product Officer, how does it feel Mr. C3PO?

Offline ez24

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Re: Design your most expensive LED Blinky!
« Reply #5 on: August 25, 2015, 04:09:42 am »
I like this post  :-+
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Offline fivefish

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Re: Design your most expensive LED Blinky!
« Reply #6 on: August 25, 2015, 04:35:32 am »
Timing signal for the LED blinky will come from a geo-synchronous satellite sending on/off commands.
 

Offline bills

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Re: Design your most expensive LED Blinky!
« Reply #7 on: August 25, 2015, 04:44:38 am »
Timing signal for the LED blinky will come from a geo-synchronous satellite sending on/off commands.

Great start than have that control a turbine gen-set.  than add a 50hp. cyclo drive gear box with a VFD to control flash speed and an encoder ( should add 120k to the job)  to trigger the excessively expensive led driver that you guys come up with.
« Last Edit: August 25, 2015, 04:47:28 am by bills »
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Offline alexanderbrevig

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Re: Design your most expensive LED Blinky!
« Reply #8 on: August 25, 2015, 04:55:54 am »
Timing signal for the LED blinky will come from a geo-synchronous satellite sending on/off commands.

Cool! Then a change in interval can be used to deduce at which angle the satellite is as well (when moving further away - or close to it on earth). Bonus feature :)

Offline alexanderbrevig

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Re: Design your most expensive LED Blinky!
« Reply #9 on: August 25, 2015, 05:00:04 am »
I promise I'll stop derailing this thread but there is one more take I suddenly realized, and it is EE (though destructive).

One way to go about this would be to take part in a very expensive project, then make a cheap ass LED driver that ends up destroying the thing. Such as making a space shuttle crash or something like that. It would not be the most expensive in terms of buying it, but it would probably be the most expensive in retrospect.  :popcorn:
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Offline vk6zgo

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Re: Design your most expensive LED Blinky!
« Reply #10 on: August 25, 2015, 05:02:51 am »
Well,first we start with the Fusion Reactor.......
 

Offline Mr.B

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Re: Design your most expensive LED Blinky!
« Reply #11 on: August 25, 2015, 05:12:00 am »
To burn a huge amount of money you have to start out with a fundamentally flawed and impossible premise...

We will power blinky with a batteriser!
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Offline hamster_nz

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Re: Design your most expensive LED Blinky!
« Reply #12 on: August 25, 2015, 05:14:54 am »
I would demand the best reliability and widest operating environment.

So must use MIL-SPEC or Space rated parts, and remember to get it FCC certified.
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Offline babysitter

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Re: Design your most expensive LED Blinky!
« Reply #13 on: August 25, 2015, 05:17:48 am »
  • Use a monitor diode(s) to control brightness in a closed-loop manner. Current control is simply not sufficient!
  • A Trimble Thundertbolt E grade GPSDOCXO is barely sufficient to control blinking frequency as it stability decays when GPS reception degrades. For high-grade customers, consider Microsemi CsIII Model 4310B Cesium frequency standard.
  • make it with pixels, so you can dim certain parts of the beam.
  • Use some kind of radar to measure length of pixel light path, use pixel dimming to guarantee uniform brightnesss everywhere you shine too.
  • HDMI/FBAS/DVI/DisplayPort input too, for use as a b/w (you know, not actually using black light) projector
  • make the configurator software overpriced.
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Offline ez24

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Re: Design your most expensive LED Blinky! --->>> $20,000,000
« Reply #14 on: August 25, 2015, 05:35:28 am »
Here is my $20,000,000 solution:

Actually this would make a fun eevblog video  Dave hint hint
Quote
Well,first we start with the Fusion Reactor.......

We need a freq standard:

This got me thinking about a Josephson Junction that is needed to maintain the freq of the LED
(used by the US bureau of standards)

http://web.mit.edu/6.763/www/FT03/Lectures/Lecture11.pdf

http://www.nist.gov/pml/div686/devices/automated-voltage-standard-ready.cfm

It takes a PHd to operate it, I think the US has two and China one.

Lets use round numbers - $10,000,000 for the freq of of the LED (includes the PHd).  We now need a power supply and an university to assemble the power supply.  Maybe we can get MIT to put it together.

Actually there is someone on this forum doing low temp freq standards !

So lets add another $10,000,000 for the power supply for a total of $20,000,000
Now someone has to furnish the power supply.

So I think for $20,000,000 you can get a LED to blink.

(I forgot the link to the $1,000,000 oscilloscope needed to test this unit)
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Offline SL4P

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Re: Design your most expensive LED Blinky!
« Reply #15 on: August 25, 2015, 05:55:29 am »
Timing signal for the LED blinky will come from a geo-synchronous satellite sending on/off commands.
Duplicated (redundant) of course!
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Offline alexanderbrevig

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Re: Design your most expensive LED Blinky!
« Reply #16 on: August 25, 2015, 06:00:31 am »
For some reason I cannot leave this riddle, and I think I've got it solved (in terms of most expensive).

This is an LED controlled by an AI. This AI has a near perfect model of the worlds finances. It is wired such that one can buy the LED on, and off. Because the AI is omniscient in the field of economics someone will always see value in changing the LEDs state.

The LED will not stop until the AI controls half or more than half of the worlds total economy, at which point no one can no longer pay to change the state of the LED.

It's been a long time since I've had so much fun! Thank you Zeyneb :)
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Offline Psi

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« Last Edit: August 25, 2015, 06:42:22 am by Psi »
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Offline NiHaoMike

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Re: Design your most expensive LED Blinky!
« Reply #18 on: August 25, 2015, 06:11:16 am »
How about roughly 8.3 million 1W RGB LEDs to make the world's biggest 4K display? (Or make that 5K if you want.) Install it in Las Vegas and bring back the drive in theater.
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Offline Psi

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Re: Design your most expensive LED Blinky!
« Reply #19 on: August 25, 2015, 06:13:18 am »
How about that many of what I just posted  :-DD
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Offline SL4P

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Re: Design your most expensive LED Blinky!
« Reply #20 on: August 25, 2015, 06:16:49 am »
Powered using Batteriser to gain the most from the finite resources of the planet...
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Offline ez24

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Re: Design your most expensive LED Blinky! --->>> $20,000,000
« Reply #21 on: August 25, 2015, 06:20:26 am »
Come on guys - you need to add the price tag to your solution.

Mine was $20,000,000

Give me $20,000,000 and I will put together a very very accurate LED blinker.
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Offline Psi

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Re: Design your most expensive LED Blinky! --->>> $20,000,000
« Reply #22 on: August 25, 2015, 06:43:30 am »
Come on guys - you need to add the price tag to your solution.

Mine was $20,000,000

Give me $20,000,000 and I will put together a very very accurate LED blinker.

I did mine on the bus, it was hard enough to manage using digikey and webbrowse at the same time. Let alone the calculator  :-DD
Edited it now.

The total is $243,027

And if you made a 4K display using it
243027 * 4096 * 2160 = $2,150,147,358,720
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Offline alexanderbrevig

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Re: Design your most expensive LED Blinky! --->>> $120.000.000.000.000
« Reply #23 on: August 25, 2015, 07:18:55 am »
Mine was $20,000,000
Mine is about $120.000.000.000.000+  (half of world capita per 2013, outdated number but hey..) though I know I'm cheating. There would be some EE with designing the hardware to run said AI though ^^

Give me $20,000,000 and I will put together a very very accurate LED blinker.
:clap: :)
« Last Edit: August 25, 2015, 07:47:36 am by alexanderbrevig »
 

Offline ez24

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Re: Design your most expensive LED Blinky! --->>> $2,150,167,358,720
« Reply #24 on: August 25, 2015, 07:23:05 am »
Quote
And if you made a 4K display using it
243027 * 4096 * 2160 = $2,150,147,358,720

Don't forget the JJ so that adds up to

$2,150,167,358,720

God I hope the politicians do not hear of this, they will try and convince us that we need this

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Online mikeselectricstuff

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Re: Design your most expensive LED Blinky!
« Reply #25 on: August 25, 2015, 07:33:20 am »
Timing signal for the LED blinky will come from a geo-synchronous satellite sending on/off commands.
What, like this (sort of)
https://www.kickstarter.com/projects/966222131/straightedge-a-new-way-to-see-your-planet
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Online mikeselectricstuff

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Re: Design your most expensive LED Blinky!
« Reply #26 on: August 25, 2015, 07:34:53 am »
How about roughly 8.3 million 1W RGB LEDs to make the world's biggest 4K display? (Or make that 5K if you want.) Install it in Las Vegas and bring back the drive in theater.
Kickstarter idea - a TV you can see from SPACE!
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Offline Balaur

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Re: Design your most expensive LED Blinky!
« Reply #27 on: August 25, 2015, 01:11:53 pm »
Whatever you are making, don't forget to hire my company to evaluate the reliability of the solution for aerospace and military applications.

I'll promise to do a nice job: environmental, radiation (SEE + TID - using neutrons, alpha particles, protons, heavy ions, muons and laser) & ESD testing according to the relevant NASA/ESA/mil standards and requirements.
 

Offline McBryce

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Re: Design your most expensive LED Blinky!
« Reply #28 on: August 25, 2015, 01:14:07 pm »
Use Audiophile grade capacitors and Siltech cables: http://www.amazon.de/Siltech-Emperor-Double-Crown-bi-wire/dp/B0089ZHCUE

And make sure you hire some consultants to manage the project.

McBryce.

 

Offline Mechanical Menace

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Re: Design your most expensive LED Blinky!
« Reply #29 on: August 25, 2015, 01:24:59 pm »
The blinky would be controlled by a neural net. Said neural net would of course have to be run on a large cluster using custom silicon with a massive amount of cores per rack, at least 100k cores per rack which would of course need more than adequate cooling and radiation hardening just to be safe. Whether to go with something ARM or PowerPC would depend on the if Freescale/NXP or ARM charge more for licenses I mean whichever best fits the needs of neural net. We couldn't risk not having power so we'd definitely have to look into a small fission generator. To keep it safe it would have to be installed on a submarine or in a bunker as deep as it is possible to go. This installation would of course have to be part of the internet of things...
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Offline Godzil

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Re: Design your most expensive LED Blinky!
« Reply #30 on: August 25, 2015, 01:27:14 pm »
You could add some resistors, invisitors and caps from there: http://studiozey.com/zeyresistor/index.html they will provide better colouration for your LEDs and make the power transient much much better!

(yay, I know where the door is)
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Offline synapsis

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Re: Design your most expensive LED Blinky!
« Reply #31 on: August 25, 2015, 01:42:59 pm »
I like this thread idea. hah

The spec just says "Blinky", and doesn't specify a uniform period. I propose a "Higgs Boson Detected" LED indicator that requires an LHC connected to it. It'll blink a couple of times.

But we all know that if you *really* want to piss away money, you give it to the sales/advertising dept.
 

Offline NANDBlog

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Re: Design your most expensive LED Blinky!
« Reply #32 on: August 25, 2015, 02:47:31 pm »
How about roughly 8.3 million 1W RGB LEDs to make the world's biggest 4K display? (Or make that 5K if you want.) Install it in Las Vegas and bring back the drive in theater.
Kickstarter idea - a TV you can see from SPACE!
Did you mean a TV in space that you can watch from here? Going on orbit always above the dark side of the Earth? Also known as Lagrange 2. Now, that would be expensive.
 

Offline Godzil

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Re: Design your most expensive LED Blinky!
« Reply #33 on: August 25, 2015, 03:28:26 pm »
You 1W RGB LED are about which size? that's really important.. :)

But I think that 4K WHXGA (5120 × 3200) would be a better solution.

If each LEDs are a square of about 5x5mm, lets see. It would made a screen of 25600mm per 16000 mm so a rectangle of  25.6 meters per 16 meters...

I like the idea, and don't forget that we will need an accordingly power supply, and way to cool down all of these LEDs.

5120 * 3200 * 1W = 16384000 = 16384 KW or 16MW. I would recommand to build a specific nuclear power plant for this display.
When you make hardware without taking into account the needs of the eventual software developers, you end up with bloated hardware full of pointless excess. From the outset one must consider design from both a hardware and software perspective.
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Offline ludzinc

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Re: Design your most expensive LED Blinky!
« Reply #34 on: August 25, 2015, 03:50:10 pm »
I'd use a 555, a billion thermo junctions and a Saturn 5.

Fire rocket, heat thermopile, blink led.
 

Offline Zeyneb

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Re: Design your most expensive LED Blinky!
« Reply #35 on: August 25, 2015, 06:09:09 pm »
Code this FPGA to flash a pin  $39452

http://www.digikey.com/product-detail/en/XC7V2000T-G2FLG1925E/XC7V2000T-G2FLG1925E-ND/3981901

Use this IGBT to switch the led $6117

http://www.digikey.com/product-detail/en/PP600T120/PP600T120-ND/3775352

Use this bypass cap, and lots off em $9605 x20 = $192100

http://www.digikey.com/product-detail/en/WF165336WQ75233BJ1/WF165336WQ75233BJ1-ND/5086082

Use this resistor $778

http://www.digikey.com/product-detail/en/1623821-2/1623821-2-ND/2365856

Use this led $1995

http://www.digikey.com/product-detail/en/NV4V41SF-A/NV4V41SF-A-ND/3913162

Use this crystal $2585

http://www.digikey.com/product-detail/en/AOCJY7-100.000MHZ/535-11920-ND/3641394

Total $243,027

And if you made a 4K display using them

243027 * 4096 * 2160 = $2,150,147,358,720

Awesome. Your bypass capacitor has a voltage rating of 22.5kV, while the Virtex-7 FPGA is operating at 1V core voltage. I do think you would qualify for overengineering skills.
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Offline calexanian

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Re: Design your most expensive LED Blinky!
« Reply #36 on: August 26, 2015, 05:44:29 am »
Just let  the state assembly of California have a crack at it. Not only will it be way over budget but the lawsuits alone will take years to resolve and it will become a bottomless sinkhole like every other project in this wretched financial hell hole. The price will cross into the billions well before it is even out of environmental impact study phase.
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Offline ez24

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Re: Design your most expensive LED Blinky!
« Reply #37 on: August 26, 2015, 06:40:28 am »
Just let  the state assembly of California have a crack at it. Not only will it be way over budget but the lawsuits alone will take years to resolve and it will become a bottomless sinkhole like every other project in this wretched financial hell hole. The price will cross into the billions well before it is even out of environmental impact study phase.
:-+ I feel your pain in this nanny state
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Offline Red Squirrel

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Re: Design your most expensive LED Blinky!
« Reply #38 on: August 26, 2015, 06:46:38 am »
I wonder if there are some ridiculously expensive audiophile tubes that could be used instead of the transistor.  Though, $6117 for a transistor is probably hard to beat.  ;D  You want to use a Darlington pair, of course.   Maybe throw in a relay for good measure, a nice solid state DIN mount one.
 

Offline Psi

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Re: Design your most expensive LED Blinky!
« Reply #39 on: August 26, 2015, 06:53:03 am »
Awesome. Your bypass capacitor has a voltage rating of 22.5kV, while the Virtex-7 FPGA is operating at 1V core voltage. I do think you would qualify for overengineering skills.

I wonder if that cap would even work at 1V. Might have the worst leakage ever and i doubt its capacity will be the same.
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Offline mzzj

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Re: Design your most expensive LED Blinky!
« Reply #40 on: August 26, 2015, 07:26:30 am »
I'd use a 555, a billion thermo junctions and a Saturn 5.

Fire rocket, heat thermopile, blink led.
I like your thinking.
Saturn 5 1. stage last only for ~ 2 minutes so I assume you were planning to fire more rockets in sequence every 4 minutes to get 50/50% duty cycle for your blinker?    ;)
 

Offline Godzil

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Re: Design your most expensive LED Blinky!
« Reply #41 on: August 26, 2015, 10:34:19 am »
I still think that a nuclear power plant will be more expensive than a non reusable rocket
When you make hardware without taking into account the needs of the eventual software developers, you end up with bloated hardware full of pointless excess. From the outset one must consider design from both a hardware and software perspective.
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Offline ludzinc

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Re: Design your most expensive LED Blinky!
« Reply #42 on: August 27, 2015, 02:41:34 am »
I'd use a 555, a billion thermo junctions and a Saturn 5.

Fire rocket, heat thermopile, blink led.
I like your thinking.
Saturn 5 1. stage last only for ~ 2 minutes so I assume you were planning to fire more rockets in sequence every 4 minutes to get 50/50% duty cycle for your blinker?    ;)

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Offline marshallh

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Re: Design your most expensive LED Blinky!
« Reply #43 on: August 27, 2015, 03:36:00 am »
I will be using a Stratix IV FPGA to run my next Nixie clock. I think i'll use a separate CPU core for each digit, and run embedded linux entirely from blockram  :-DD

Seriously, it's sitting here on my desk, just have to make a 4L power board for it!
Verilog tips
BGA soldering intro

11:37 <@ktemkin> c4757p: marshall has transcended communications media
11:37 <@ktemkin> He speaks protocols directly.
 

Offline G7PSK

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Re: Design your most expensive LED Blinky!
« Reply #44 on: August 27, 2015, 07:49:10 am »
Every project needs a case, so get Fabergé,Tiffany's and Chanel   to manufacture the case jointly, that should burn up some dollars.
 

Offline jimdeane

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Re: Design your most expensive LED Blinky!
« Reply #45 on: August 27, 2015, 08:15:35 am »
I'm going to start by powering it with a plutonium radiothermal electric generator.
 

Offline Godzil

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Re: Design your most expensive LED Blinky!
« Reply #46 on: August 27, 2015, 01:26:17 pm »
Every project needs a case, so get Fabergé,Tiffany's and Chanel   to manufacture the case jointly, that should burn up some dollars.

Ask Philip Stark for the product design!
When you make hardware without taking into account the needs of the eventual software developers, you end up with bloated hardware full of pointless excess. From the outset one must consider design from both a hardware and software perspective.
-- Yokoi Gunpei
 

Offline zapta

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Re: Design your most expensive LED Blinky!
« Reply #47 on: August 27, 2015, 01:28:13 pm »
>> Design your most expensive LED Blinky!

No need to design, just make it a government project and the cost will pile up on its own.
Drain the swamp.
 

Online free_electron

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Re: Design your most expensive LED Blinky!
« Reply #48 on: August 27, 2015, 04:58:41 pm »
been done....

Connection machine CM5 :



mor einfo :

http://people.csail.mit.edu/bradley/cm5/

and it will be hard to beat.

Professional Electron Wrangler.
Any comments, or points of view expressed, are my own and not endorsed , induced or compensated by my employer(s).
 

Offline Wytnucls

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Re: Design your most expensive LED Blinky!
« Reply #49 on: August 27, 2015, 05:17:50 pm »
Buy experimental time on the LHC at CERN, with a satellite link to your LED, which would blink every time a Higgs Boson is detected.
 

Offline Godzil

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Re: Design your most expensive LED Blinky!
« Reply #50 on: August 28, 2015, 12:27:16 am »
been done....

Connection machine CM5 :



mor einfo :

http://people.csail.mit.edu/bradley/cm5/

and it will be hard to beat.

I would love to see Dave do a teardown of these beasty (and also on of the Cray.. :D)
When you make hardware without taking into account the needs of the eventual software developers, you end up with bloated hardware full of pointless excess. From the outset one must consider design from both a hardware and software perspective.
-- Yokoi Gunpei
 

Offline karoru

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Re: Design your most expensive LED Blinky!
« Reply #51 on: September 28, 2015, 11:16:27 pm »
I think that since we all agreed on using batteriser on this appliance, we have to customize a pick and place machine to automatically replace discharged batteries (we can hotswap them, because of course we're doing the medical stuff things - 2 batteries in parallel to make hot-swapping easy). That would gild the lily and add few pennies to the total cost.
 

Offline ivan747

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Re: Design your most expensive LED Blinky!
« Reply #52 on: September 28, 2015, 11:42:44 pm »
I'd waste it all on R&D because of my requirements to be World Class in green energy. We need to source the best LED and a very precise resistor and low ESR capacitor.

In fact, I think we would hire someone to make an ASIC for the LED blink RC timing, then have them make the LED with the tiny ASIC already on them. Given they can meet the specs for the worlds best resistor and capacitor (of course they will! their contract says so after all).

Now it's time for me to align with the marketing department, and I'm sure they will have meaningful input for the progress of our product....  :blah:

RC? You HAVE to use a GPS disciplined rubidium clock, if you don't, then what's the point?
 

Offline ivan747

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Re: Design your most expensive LED Blinky!
« Reply #53 on: September 28, 2015, 11:44:45 pm »
Timing signal for the LED blinky will come from a geo-synchronous satellite sending on/off commands.

Cool! Then a change in interval can be used to deduce at which angle the satellite is as well (when moving further away - or close to it on earth). Bonus feature :)

It needs a satellite tracking system to reduce the effects of doppler shift when the device itself is moved around in a vehicle.
 

Offline Stonent

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Re: Design your most expensive LED Blinky!
« Reply #54 on: September 29, 2015, 12:05:56 am »
Virtex 7 FPGA
Rubidium or Cesium clock source
Red LED encased in laboratory grade Ruby.

Or theres this:

« Last Edit: September 29, 2015, 12:07:44 am by Stonent »
The larger the government, the smaller the citizen.
 


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