Welcome to the Slashdot Beta site -- learn more here. Use the link in the footer or click here to return to the Classic version of Slashdot.

Thank you!

Before you choose to head back to the Classic look of the site, we'd appreciate it if you share your thoughts on the Beta; your feedback is what drives our ongoing development.

Beta is different and we value you taking the time to try it out. Please take a look at the changes we've made in Beta and  learn more about it. Thanks for reading, and for making the site better!



How Does Tesla Build a Supercharger Charging Site?

EETech1 Re:And how long does it take... (190 comments)


What would 100 Tesal owners talk about while they waited 30 minutes for a fill-up?

No... No... No!!!
My car is the most awesome car in the world...

Oh. Elon... He makes the best rockets too ya know... dummass NASA pork...

Did I mention My car is the better than your car?

So... What kind of gas mileage do you get?

I'm so glad we have this place to hang out and talk Tesla...

about three weeks ago

Tor Browser Security Under Scrutiny

EETech1 Re:Why not work with Mozilla (80 comments)

If there was ever a reason to have the device driver firmware loaded by the OS, instead of being stored on the device in flash, I think this is it!

Otherwise, just pwn the network card, and you can send out digital breadcrumbs forever.

At least you can include firmware you think you can trust.

about three weeks ago

Brookings Study Calls Solar, Wind Power the Most Expensive Fossil Alternatives

EETech1 Re:I believe solar thermal does benefit from scale (409 comments)

Build a giant hubless flywheel in one of those old particle accelerator rings.

Store all the extra wind gusts underground for a whole city

about a month ago

Linux Needs Resource Management For Complex Workloads

EETech1 Re:From the "is it 2005? department" (161 comments)

IBM has DIMMs with flash memory already.

about 2 months ago

Industrial Control System Firms In Dragonfly Attack Identified

EETech1 Re:Against man's stupidity... (24 comments)

I use the eWon, and MBConnect devices all the time, one or the other goes in to every machine we build. They are VPN gateways with secure login so we can remotely work on a machine instead of having to immediately travel to it to check the slightest thing.

None of our customers leave the internet side of the device plugged in. Unless we are on the phone with them, and they are by the machine, it is unplugged. As an additional level of security, the device has a keyswitch connected to it that must be turned on to allow it to connect to the internet, just in case it gets plugged in.

Most devices are managed through the respective manufacturers applications via the cloud, so we just have to download their application, and log in, and it handles getting the keys, and establishing the secure VPN tunnel. It is possible to manage your own infrastructure, but I don't know of anyone who is large enough, or chooses to do it.

I put the eWon app on my brand new work PC, now I have to check if I got pwned the first day got my new Lappy:( The remote access apps are one of the few things that does not get installed on the VM. Connecting to the VPN, through the VM can really be a pain!

The MBConnect devices are really cool, they can even verify the entire system, and reload anything that does not match what is stored inside itself. Besides providing a huge obstacle for anyone wanting to Stuxnet the system, they allow a customer to replace a PLC with a spare, reboot, and have everything come back to normal, and they allow for easier updating of a whole system by passing the program to the MBConnect device, and having it apply the update locally.

Nothing more scary than flashing a PLC remotely, and rebooting it. If it doesn't come back online, you might have to take your Lappy, and leave on an immediate road trip!

about 2 months ago

Bug In Fire TV Screensaver Tears Through 250 GB Data Cap

EETech1 Re:It's 2014 (349 comments)

My Bittorrent client can do that:)

about 2 months ago

The Rise and Fall of the Cheat Code

EETech1 Hey! (178 comments)

Dangit... You just made me jump to my bootloader...

about 3 months ago

$500k "Energy-Harvesting" Kickstarter Scam Unfolding Right Now

EETech1 Upgrade To PRO!!! (448 comments)

You definitely need to get yourself on the waiting list for the upgraded PRO version with the quantum solvers then...

Perfect for exactly these chicken and egg type problems, where both sides are seemingly full of shit simultaneously!

(and the upgraded blue LEDs are friggin' awesome)

about 3 months ago

Kingston and PNY Caught Bait-and-Switching Cheaper Components After Good Reviews

EETech1 Re:This is fraud. (289 comments)

Many things can happen when going into production. Perhaps they always intended to go into production with the cheaper controller, but they had a problem with the firmware they were struggling with, and so they used a more expensive controller that was a slam dunk to buy themselves more time to perfect the cheaper controller, and not miss their target delivery dates.

about 3 months ago

EU, South Korea Collaborate On Superfast 5G Standards

EETech1 It won't matter anyway (78 comments)

I have 4G now, and it is still as slow as 3G, which is as slow as 2G, which is as slow as 1Xrtt when everyone is using their phones and the pipe to the tower is full. I often see 10 - 30 Kbps during peak times.

During the middle of the night, 1 bar will get me 1.3 - 1.9Mbps on 3G, and 3 - 5 Mbps on 4G, but during the day, I struggle to get 100Kbps on 3G or 4G, even with 5 bars.

I can watch my download speed increase as everyone goes to bed. It's funny (sad) to graph my download speed and see it jump up on the hour, and jump a little less on the half hour as the pipe opens up.


about 3 months ago

30-Day Status Update On LibreSSL

EETech1 Re: Throwing out all compatibility hooks makes it (164 comments)

Everyone who can, will jump ship to Theo's version ASAP. Being strong enough to demand the best, and accept nothing less is a good thing when it comes to software security.

Many of these libraries are essential, and mostly taken for granted.

How many people thought that it was already an OpenBSD project, and had Theo's scrutiny already?

There are some true leaders within the OSS world, and we are lucky to enjoy what is made of their efforts. As the TLAs become increasingly invasive in our daily lives, having well written clearly documented textbook code is the only thing you can count on to provide any level of security.

Version 4.0 of Linux will be the same way. Linus will take his kernel, and go where things are sane again, and there will be no compromises. Take it or leave it. This is how things are done. Correctness is the law of the land.

Or you will be taken of your privacy, and computer security at every possible turn.

about 4 months ago

Free Can Make You Bleed: the Underresourced Open Source

EETech1 Re:Cheap ass gits. (175 comments)

Because of Minix.

about 4 months ago

Why Tesla Really Needs a Gigafactory

EETech1 Re:What size does one take? (193 comments)

I worked on a hybrid demo that used 14,400 of them.

25 of them connected in parallel.
(3.7V @ 75Ah)

12 groups of the 25 in series.
(44.4V @ 75Ah)

16 of the 25 X 12 sets in series.
(710V @ 75Ah)

3 of the 16 X 25 X 12 sets in parallel.
(710V @ 225Ah)

Very scary to work with, especially in the bilge of a boat!

We went way overboard with the charge monitoring, but when we had cells fail while we were testing, they could be easily identified, and swapped out, then the rest of the pack was returned to service. I think the same could be done here.

My guess is there will be rebuilders that spring up to disassemble and test the cells, and replace the few bad ones with other used ones of similar vintage and capacity, and sell the used / repaired packs. A few weak cells can really hurt the pack as a whole.

When I used to race R/C everyone had their secret methods of treating cells to boost Voltage and or Capacity, and I'm sure there is some money to be made if someone can recondition the cells to get some of their lost capacity back. Perhaps take the packs apart, hook them up to a windmill, and cycle them through a few test and re-conditioning charge cycles to bring some of their life back while making a little coin as grid storage.

1. collect old EV batteries
2. disassemble
3. test (PROFIT!!!)
4. sort
5. recondition (PROFIT!!!)
6. reassemble
7. PROFIT!!!

about 5 months ago

.NET Native Compilation Preview Released

EETech1 Re:Open source compiler (217 comments)

I know... I hate having to use those darn line numbers..

And don't even get me started on the three letter variable names!!!

Qbasic FTW!

about 5 months ago

Algorithm Reveals Objects Hidden Behind Other Things In Camera Phone Images

EETech1 Re:Frosted glass, huh? (85 comments)

Better be careful what kind of tape you use!

about 6 months ago

Ford Dumping Windows For QNX In New Vehicles

EETech1 Re:Can't it be like Star Trek (314 comments)

Many fuel injected performance cars already do that. When the ECM detects you are at WOT, it will shut off the A/C compressor to get a few extra horsepower.

My 5.0L Mustang had A/C cut. I used to drag race it (:Yes with the A/C on:) and 12 seconds later, when I got to the "Big End" of the 1/4 mile it would be blowing warm air out of the registers, but as soon as I let off the gas, it would cool down again!

I tried running it with the A/C turned off as well, but it made no difference in my elapsed times. Changing to a shorty belt that bypassed the A/C and power steering was good for a tenth of a second or so, but it was not worth the hassle of changing the belt all the time, and sweating my butt off while I was having fun.


about 7 months ago

Tesla Model S Caught Fire While Parked and Unplugged

EETech1 Re:Tesla not involved [Re:Not from the car?] (329 comments)

You are correct, with a CV joint the rotational angle in = rotational angle out, this is not the case with a traditional U joint. If you've ever been in a 4wd truck, and taken a tight turn, you can feel the lurching as the U joints change the wheel speeds. This is not what is at play in this case.

The issue is due to the geometry of the front wheels, and the fact that they want to "flop" outwards when torque is applied. Normally one wheel would counteract the other, but the uneven angles in the drivetrain cause an additional imbalance that can be felt in the steering wheel.

Wikipedia to the rescue again...
  The main component of torque steer occurs when the torques in the driveshaft and the hub are summed vectorially, giving a resultant torque vector around the steering pivot axis (kingpin). These torques can be substantial, and in the case of shafts making equal angles to the hub shafts, will oppose one another at the steering rack, and so will cancel. These torques are strongly influenced by the position of the driveshaft universal joint (CV joint) in relation to the steering axis, however due to other requirements such as achieving a small or negative scrub radius an optimum solution is not generally possible with simple suspension configurations such as Macpherson strut.



about 7 months ago


EETech1 hasn't submitted any stories.


EETech1 has no journal entries.

Slashdot Login

Need an Account?

Forgot your password?

Submission Text Formatting Tips

We support a small subset of HTML, namely these tags:

  • b
  • i
  • p
  • br
  • a
  • ol
  • ul
  • li
  • dl
  • dt
  • dd
  • em
  • strong
  • tt
  • blockquote
  • div
  • quote
  • ecode

"ecode" can be used for code snippets, for example:

<ecode>    while(1) { do_something(); } </ecode>