storborg
@media (min-width: 400px) {
.thing {
background-image: url(size-400.png);
}
}
@media (min-width: 401px) {
.thing {
background-image: url(size-401.png);
}
}
You could combine this with pixel density for even more specificity.Tracking a Bluetooth Skimmer Gang in Mexico
1. As luaks points out, you can use a CNAME to alias just the webserver, without affecting MX configuration, etc.
2. You can have use alternate subdomains (like static.example.com or cdn.example.com) for handling static content and prevent cookies from being sent with those HTTP requests. This is a slight performance gain.
OnBeep Onyx Personal Communicator
http://spacecollege.org/isee3/isee-3-reboot-amplifier-instal...
It is an AR 700S1G4 with rated minimum output power of 700W, and will be used in S-band. Here's the datasheet:
http://www.arww-rfmicro.com/post/700S1G4.pdf
At these frequencies, the Arecibo dish has a gain of around 72dBi, putting the EIRP at about 7 gigawatts.
For scale, a typical wifi router has an EIRP of around 50 milliwatts, so this is about 140 billion times more powerful.
The focus of this laptop is really on versatile and hardware-hacking-power, not on raw performance. There are a number of flagship features that you won't find in a typical laptop, and gobs of expandability.
For example, there's an onboard FPGA, for when you're at the coffee shop and you need to MITM a high-speed / low-latency protocol.
The schematics are full of attention to detail and fantastic surprises: http://www.kosagi.com/w/index.php?title=Novena_PVT_Design_So...
As you've pointed out, it seems like a big price jump to go from the bare board to the desktop and from the desktop to the laptop, but you're actually getting a lot of components there, including: very flexible battery charge controller (runs ChibiOS on an ARM7), speakers, speaker mounts, machined SSD mounting rails, and cabling. The screen is a gorgeous IPS panel.
Also, regarding the airplane tray table: it's actually designed to be hung off the seat in front of you, so you've got the entire table free.
Novena โ Open Source Laptop now available
https://en.wikipedia.org/wiki/Automatic_dependent_surveillan...
https://en.wikipedia.org/wiki/Aircraft_Communications_Addres...
These systems were manually disabled.
Middle class leaving San Francisco, census says
Canon EOS-M Camera Disassembled
> Battery recharge time - out for 15 mins flight? Recharge for 2 hours.
So? Swap out batteries. The whole drone doesn't have to be grounded for 2 hours.
> Flight time / payload - pick one. (20 mins with no payload is a stretch. Add bigger batteries? Too much weight. Add bigger motors and props for more lift? now you need bigger batteries...
That's wrong. There are many off the shelf platforms which can easily handle 5+ lb payloads for 20+ minute flights. Here's one: http://www.freeflysystems.com/products/cinestarHL.php
> No good in 'weather' of pretty much any kind.
That's wrong, too. Multirotor flight speeds are 30+ knots. Modest wind is not a big deal.
> Unstable with a failed motor / prop. Will fall out of the sky under numerous failure scenarios.
Most robust multirotor platforms have 8 or more motors/props, and can trivially handle the failure of one or two. It's true that there are "numerous failure scenarios" which will result in a UAV falling out of the sky, but the same is true of passenger airliners: this will happen if the wings fall off. To suggest that a UAV can't be made as reliable as a typical manned helicopter is short-sighted.
> The blades are lethal - can be shielded, but will add weight and reduce efficiency.
This is only true in the absence of failsafe mechanisms: e.g. a device that brakes the motor when below a certain altitude. Also, as you mentioned, they can be shielded.
> GPS is unreliable at best, and is easily interfered with.
No, GPS is perfectly reliable "at best", and utterly nonfunctional at worst. Fortunately, there are lots of alternatives for GPS.
> Current regulations in countries that have them typically require line-of-sight operation; away from people and property (which rules out landing outside someone's front door); no over-flight of persons; restrictions around distances from the operator when taking off and landing. (And remember the battery / weight issue? Go over a certain weight [~8KG], and the regulations get even more onerous.)
This is 100% valid. Regulations are a concern.
In the case of these stickers, the development is already done. Unlike typical crowdfunding campaigns, the creator is not expecting backers to fund development or absorb the risk of unexpected engineering challenges, which is why the funding threshold is set at $1.
Source: I have these on my desk, and they're awesome.
- only minified source provided
- not out of the box compatible with a module loader
- no public bug tracker
- doesn't handle all edge cases (for example, type some numbers, place the cursor after the space, and hit backspace).
Good luck.
On the other hand, this is a nice list of edge cases for someone to check when they implement the open source weekend project version of this.
Crowdfunding: Due date
http://www.csr.com/products/35/sirfstariv-gsd4e
You can see more detail of that here:
http://www.catwig.com/google-glass-teardown/teardown/mainboa...
Bootstrap 3 is mobile-first
"292 of Macy's 800 stores have been doing double-duty as mini-fulfillment centers that assemble, pack and ship online orders"
"since 40 percent of bestbuy.com orders are now picked up."
A good rule of thumb is that if you have defined access points for others to consume your code with (command line tools, Python modules, or Setuptools entry points), it's a good idea to make a Python package like this. Otherwise, skip it.