I’ve been looking for a long TOSLink optical audio cable but I notice most of the consumer stuff is max 15 feet long.  I really need a digital audio cable about 25 feet. I thought one of the major advantages of an optical audio cable was that optical could carry quite a long distance. Does anyone out there know why TOSLink cables have a limited length?  I’d rather not run more coax cable in 2010.

I’m looking forward to the fiber optic linking systems Intel is working on for PCs and peripherals. They call it a hybrid system, silicon potonics, the merger of optics and silicon on one module.

I remember way back when when I was building my first laser in.. well, it was a while ago, it was a Heathkit voice communications laser kit(!). I remember thinking this would be cool to have fiber or something to link the two points so they wouldn’t have to be LOS (Line-of-Sight).  Then when I was dealing with trying to wrangle in old IDE cables into a case with a lot of drives, or worse yet SCSI arrays back in the day, I thought things would be a lot easier with a fiber connector instead of friggin wires. And why not, fiber technology was pretty advanced, even back then!

It appears, though, that they seem to be coming out with new standards that are grandfathering their existing technology and standards before they are even released.   As an example they just announced the Intel 50-Gbit/sec optical interconnect using their ‘silicon photonics’ technology which basically means the optical cables are directly attached to the chip, rather than the chip driving an output module which the fiber connects to. Just previously they were bragging about their 8-15-Gbit optical interconnect I guess this is similar to handling device I/O right on the processor rather than having an outboard I/O chip.

I think this type of technology will first lead to fiber optic connections that replace SATA, then instead of PCI Express, we’ll have our super-computers in a card (video processors) plugging into the motherboard for stability, some power, and the main connection will be a fiber link. Once we get past that stage you’ll start to see motherboards with fiber optics onboard and with optical ports between the processor and expansion cards.  You’re socket whatever will become a socket whatever/O There will still be pin connectors in the socket, but you’ll also have optical I/O channels.  The lasers will fire out the bottom of the processor and into the optical I/O ports built into the socket using micro-lensing technology and be distributed throughout the board.

Eventually your processor will just have a couple of bulky lugs for power and begin to resemble a really high-tech laser diode pump source. A couple of big lugs clamped down with the CPU and just a bunch of fiber optics integrated into the motherboard.  This technology isn’t that advanced over what we have today, but I’ve not seen anyone who has fiber optics integrated into their circuit boards (as in a fiber running like a circuit trace) if you have, please comment and share.

The peripherals will still be primarily passing electronics between components still, but eventually they’ll begin to become more optical themselves to take advantage of the optical processing capabilities of the primary processor itself.  The processor will advance ahead of the peripherals. By the time you have a fully optical processor, I suspect your accessories will still be using older electronics, but slowly catching up slightly out of phase on the development time-line.

So.. anyways! We’re like 10 years behind the curve on this stuff, get with it already! There’s tons of smart people on this, it’s just taking forever to roll out the new stuff.  In the last 100 years we’ve learned to fly, gone to the moon, invented nuclear technology, invented computing and about a million other substantial things. I’d like to see a primarily optical computer developed in my lifetime and in consumer hands since I missed everything else!

Ah where was I? Oh right, digital audio optical cables longer than 15 feet.. What’s the deal?

Related Posts

1. Long Exposure / Light Art Fun and Yellow-Orange Iris’
2. Reactor Biplane, Copper Vapor Laser and ‘The Sidewalk Project’
3. General Update – Toilet Dimming Lights, Lasers, Weather, Air Conditioners, Lawn

Wow, it’s been a while since I’ve updated the blog, sorry for the long delay I have been extremely busy with work and non computer related hobbies. It’s incredible how the time flies.  We’ve been working on digging the trench for the sidewalk, the soil is tough to dig in and is taking some time, although it’s not nearly as tough to dig in as the back walk was.  This soil has much less rocks in it, it’s just that there is a lot more of it to remove.

Here is the most recent picture of the walk aka the kiddie pool during a recent rainstorm.  It’s important to remember to add proper drainage to your digging areas, or this happens.  There is a drain trench that leads to the roadside cliff edge, but it’s not deep enough.  If it were not for this drain trench, the excavation area would have been filled to the top.  This weekend I hope to get more material removed, it’s quite a piece of work for me because my body deteriorates quickly with heavy labor due to the rheumatoid arthritis, however I know we’ll get it done eventually, and most importantly before winter. The stairs will be getting removed and the sidewalk concrete will extend to the edge of the deck, then new steps will be built and secured to the concrete pad to make everything nice and solid.  The steps are in not-so great condition, though still strong but I think new steps will look great.

New sidewalk excavation

REACTOR BIPLANE

Aside from ditch digging we built a model biplane over the weekend and got some airtime on it.  The biplane is a Electrifly (Great Planes) ‘Reactor Bipe’.  It’s an electric biplane with a 38″ or so wingspan. I probably would have been better off buying some repair parts for the heli and a new radio but this looked really neat and hopefully it’ll help me blend in with the plane guys more at the R/C field.  The electric motor is a .15 equivilant size, theoretically, though I somewhat doubt it, it still does a pretty good job.

Electrifly Reactor Biplane

The Reactor Bipe was originally built with the suggest Futaba 3114 servos, but these tended to strip really easy and it got frustrating running out of servos.  I purchased some new gearsets for the servos, but they will be used in some other, lighter project because they just really don’t hold up in this application.  I replaced the servos with the Hitech HS-65MGs I was using in the Mini-Titan helicopter and things improved GREATLY, these servos really have the needed strength for the large control surfaces and are pretty fast as well.

The Reactor built pretty quickly, you do have to be careful about a few points. I noticed after assembly that using the pre-cut hinge slots that one ailerone was a bit lower than the one on the opposing wing.  Double check the position of the hinge slots and everything else if you are concerned.  Additionally where they recommend to use 30 minute epoxy, I’d definetly go that route.  The manual for the tail includes and update sheet to use CA to adhear the horizontal stab, rather than epoxy.  I suspect this is because epoxy could drip and cause the elevator tie rod thing to become bound.  Even with CA this is possible, be careful when applying the CA glue to the horizontal stab.  Additionally when gluing the control rods to the clevises, make sure the thin CA doesn’t drip into the joint.  It will adhere them solidly, and while you think that you escaped disaster because the arm and surface still moves, you’ll quickly discover that this is only because the clevis is slowly twisting itself apart, instead of actually rotating in the control horn.

The manual comes with recommended control throws for low rates, high rates, and 3d.  If you use the recommended control arm holes and low rates, you’ll find that the control is very grainy/low-resultion.  You have to turn the travel/ATV down so far, that you are only using a very small portion of the bandwidth for each channel, and you can actually see each step in the control surfaces.  This is bad because you loose a lot of precision.  I would recommend using the outer holes in the control horns on the control surfaces, and the inner holes on the servo control arms if you just want to start out easy.

I’ve put in 4 flights in the last two nights, all of them were great although the plane is pretty ‘touchy’ on the controls.  I will probably work in some exponential to make the middle of the controls softer, as I feel this would be okay for a plane (I don’t like expo on helis).

Electrifly Reactor Biplane Side View

Reactor Bipe Airborne

COPPER VAPOR LASER

Another side project which has been absorbing my time is the Copper Vapor Laser project. I’ve been building a tube furnace for this laser since the bore of the laser, where the copper vapor and helium (or neon) is energized by the electricity needs to be heated up to 800 degrees F for a copper chloride/bromide type solution.  While the tube furnace I am building is overkill as I actually wish to build a version of this laser using elemental copper.  The disadvantage of using elemental copper is that it requires extremely high temepratures, in the range of 1500 degrees celcuius (almost 2800 degrees Fahrenheit).  Because of this I have been lovingly crafting the furnace out of high temeperature ceramic fibers (Inswool), ceramic boards (Insboard) and a variety of refractory mortars.  For the bromide/chloride lasers, heat will be provided by a nichrome heater element(s) with no problem.  In order to reach operating temperature for the elemental copper vapor laser, I will probably use one or two propane torches inside of the cavity.

The bore for the CuCl/CuBr laser is a quartz tube, the bore for the elemental copper (Cu) laser will be a high temperature alumina ceramic bore.

The advantage of an elemental copper laser is that you do not require a double pulse power supply.  With a Cu Chloride or Bromide laser, you have to hit it once with a disassociation pulse, and a second time with the lasing pulse.  With elemental copper you don’t need to disassociate the copper from a bromide or chloride solution, so one step is saved there, at the cost of extreme temperatures.

Copper Vapor Lasers have been used in some of Pink Floyd’s shows, they produce powerful golden yellow and soothing green laser lines (beams).  Additionally CVL lasers have been used for the purpose of enriching uranium.  While I am a scientist at heart and love to explore all sorts of different realms, I don’t think that enriching uranium would be a recommended pastime, so I probably won’t explore that part of science!

Here are some pictures of the tube furnace in progress.  I’ve gotten much further, but don’t have pictures at this time. I will update my laser site later. This is the furnace for the CuCl/CuBr version of the laser.  For the elemental copper version of the laser, this will probably end up encased in an additional external Inswool blanket wrap to bring up the insulation value and retain more heat inside the core.

Related Posts

1. Reactor Biplane with FPV Hardware Flys
2. Pouring a Concrete Sidewalk with Coloring
3. I wrecked the Reactor Bipe, Time For a New (used) FPV Plane

It’s raining tonight again.  It’s really been crazy, like it should be Spring right now and not summer.  For the last two weeks we’ve had almost non-stop rain, perhaps one or two days without it.  The Scott’s Patchmaster is doing great, but it’s not really getting a chance to get it’s roots deep in the ground and form a solid mat due to all of the available water from rain, as a result the ground is a bit squishy over there still.  I keep a jar out on one of the planters so I can see how much it rains.  In one 24 hour period I measured almost 3 inches of rain!   Crazy weather!

There’s a few changes coming to the Thaltech.com website, it won’t affect this blog for the most part, but is part of me wanting to unify all of my various hobbies into something easily manageable and search-able.

I’ve started updating some of the other pages on this website. My most visited site, my current Jon’s Homebuilt Lasers , is slowly being transitioned over to Jon’s Commercial, Industrial and Homebuilt Lasers which will me in the format of a new CMS / Blogging style which closely mirrors the appearance of this site. I plan on getting some things going with that hobby in a month or two and wanted a site which was easy to update, as well as I am interested in merging appearance and access on my websites.

Also in transition at this time is my current Jon’s  Helis website. I also be converting my rocket site over as well as creating a new one specifically for my high voltage projects and experiments.

When all is said and done I will replace the main Thaltech Webpage with a blog type interface as well which will receive general ‘stuff’ type posts and also receive updates from each of the partitioned sites. This will allow me to have all of my projects and work and hobbies and such indexed on the main URL for my website, providing for my own little gateway into things.

You may ask why I’d want to make everything completely separate, rather than just running one giant blog.  For one I want to individually theme each site towards people who have interest in those specific items, without them having to dig through a ton of unrelated content.  Additionally I like to keep things segmented for my own purposes.

Related Posts

1. Weekend Update: Lawns and Scott’s Patchmaster (28 day report)
2. Analyzing Your Radio Controlled Helicopters Current Consumption
3. General Update – Toilet Dimming Lights, Lasers, Weather, Air Conditioners, Lawn

A few orange Iris’ spawned on the road edge by the highway, they’re pretty nice looking as well.   Additionally some more blue and white ones have shown up, and look exactly like the ones shown earlier this month.

We had some timed exposure fun tonight out in the yard.  I’m surprised one of us wasn’t mauled by a possum or rogue coyote but we got some good pics.   A couple of the pictures were taken with sparklers, the rest of them with flashlights, an LED Pen and a laser pointer.

I drew on the side of the house with the laser pointer in one experiment.  It turned out ok though I wish the streetlight hadn’t flooded the area so much.  Live in the middle of nowhere and the only streetlight within half a mile is right in front of my house.

See the descriptions on the pictures for info about what was used.  When you click on a picture, use the left and right icons at the bottom of the pictures to move through the list.

If interested, please check out my other Light Art Posts

Related Posts

1. Side yard photos, a bird, and some flowers
2. Time Delayed Exposures / Slow Shutter, Light Art (I lied this is post 2 of 3 for today, not 2 of 2)
3. A New Flower Bloomed – It’s an Orange Trumpet Vine