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ZigBee Low-Power Wireless Networking
asmithmd1 writes "Do you you have a great idea for a wireless device that really doesn't need the 1 Mbit/sec (and high power consumption) of Bluetooth? Well you will have a new choice soon, ZigBee. Zigbee is the trademark for IEEE 802.15 Personal Area network low data rate standard. Designed to run in low power 8 bit devices at data rates of 20k bits/second, a ZigBee node will run for months if not years on one set of batteries. With heavy hitters like Motorola and Phillips behind it and chips available soon for half the cost of bluetooth, it looks like it will become a reality."
Yet more interference. As it is any time anyone uses a wireless phone (2.4GHz), bluetooth device (2.4GHz), radio headphones (2.4GHz) or microwave (everything) my 802.11b (2.4GHz) connection dies...
Actually that's not entirely true. The 802.15.4 standard defines the physical radio behavior of the personal area network; ZigBee is the logical network and application software that runs on top of 802.15.
Ref: ZigBee FAQ
In Soviet Rush, today's Tom Sawyer gets high on you.
First bluetooth, now zigbee (wifi should be in here somewhere too I suppose), what do they do, get pissed in the office on a friday arvo and pull stupid arse names out of a hat?
I can just see a group of marketroids sitting round in a room saying things like, "oh numbers, they'll never catch on" "quite so, we need something snazzier" "wait a minute, a bee is flying into my beer" "oh look, a ziggy cartoon"
"EUREKA!!!!! lets call it ZigBee"
"good idea, pass me another beer"
"Do you you have a great idea for a wireless device that really doesn't need the 1 Mbit/sec (and high power consumption) of Bluetooth?
20 kbits/second is too slow for most applications. While perhaps it's sufficient for cellular data, mice, and keyboard, I don't see what else you could use it for. PDA syncing took forever at 56kbit/sec even (thank god for USB). And it certainly couldn't work for wireless phone headsets. "
The question was 'what can you do with it', not 'what can't you do with it'. Saying what it can't do is easy. No idea why you got modded up for that.
"Derp de derp."
An entire class A, hah! What is a poor student supposed to do with such few IPs, you insensitive clod?! That's barely enough to assign a unique network address to each pr0n movie
"BSD: Free as in speech. Linux: Free as in beer. Windows 10: Free as in herpes." --Man On Pink Corner in #52607549.
But PDA syncing at 20kb/s wouldn't be bad if it could do it automatically & continuously when you are in range of the wireless network.
This could really help with broader data transfer on scientific studies. Remote environmental sensors along a sensitive part of a river transmitting to a data crunch relay, for studying fish habitat comes to mind. The 02 saturation, water temp stream level, even chemical changes could be easily watched during critical periods. I am sure there are very many other uses, building air conditioning zones, dangerous chemical sniffers. Really scookum alarm systems that can send all sorts of local data from different locations to a hub. As far as I am concerned the internet apps would be suitable for text mail, and thats about it but the broader practical applications are huge.
OH THE SHAME I fell off the wagon and use sigs again!
Why do people (well, mostly Americans) never write Motorolla, but too often write Phillips where it should be Philips. Or do people really think that an oil company is suddenly going into wireless electronics. Mmmm, with McDonalds going into the WiFi ISP business, you never know. And maybe those French fries are coming out of a pan of Phillips 66. :-).
Browsers shouldn't have a back button!! It's all about going forward...
Two years ago, I had the privilage of participating in the IEEE Computer Soceity International Design Competition 2001, which gave university students (such as myself) the opportunity to build something useful out of Bluetooth. Back then, Bluetooth had been The Next Big Thing (tm) for maybe a year. The competition gave me a first-hand look at why Bluetooth is still The Next Big Thing (tm), two years later.
Two years ago, Bluetooth seemed to be doing everything right. Created by Ericsson, and supported by 3Com, IBM, Intel, Microsoft, Motorola, Nokia and Toshiba, it couldn't help but succeed. In the buzzword-compatible trade press, Bluetooth, and the Personal Area Networks it creates, are destined to change the way our handheld computing devices communicate with each other. That's great -- I'd love to use my Visor to read Slashdot headlines, using my wireless phone for its Internet connection. Bluetooth has a great vision, but (at least two years ago) it lacks something far more important: superior development tools. Without worthwhile development tools, and the documentation to back them up, only those with large pockets and iron wills will succeed. Curious students (like myself two years ago) will turn away sadly, wishing there were more, but doubting anything will ever happen.
Why is it important that the small developers get involved? Palm created the handheld market not only by having a low-cost, easy-to-use handheld, but by allowing any kid in his parents' basement to develop PalmOS applications. Ninty-five percent of them may have been crap, but five percent of all the world's Palm-programming geeks is still a whole lot of stuff to attract the Palm-using masses.
ZigBee looks fascinating, and it's something I'll keep my eye on, but unless they learn from Bluetooth's mistakes, it'll be a lot of radio noise for nothing.
time to other devices (or vice/versa if it's a clock that set's itself from the Colorado time signal like mine)
I could see joysticks using this.
Light switches ala X-10.
Water meters, power meters, gas meters, wireless thermometers and other sensors.
VCR's could use it as an interface to allow configuration from a computer.
TV's could use it as a way to implement a universal RF remote control.
Apparently they already thought of some of these ideas.
From the ZigBee FAQ:
* Wireless home security
* Remote thermostats for air conditioner
* Remote lighting, drape controller
* Call button for elderly and disabled
* Universal remote controller to TV and radio
* Wireless keyboard, mouse and game pads
* Wireless smoke, CO detectors
* Industrial and building automation and control (lighting, etc.)
Then you could combine a few of these things to implement something the detects when it's too hot inside and it's colder outside and the humidity outside isn't too bad, turn on a fan. This is otherwise very complicated but hook up a few thermometers, a humidity sensor and a switch that are all accessible from a computer and it gets very easy.
set softtabstop=4 shiftwidth=4 expandtab nocp worlddomination
I can think of a lot that would only require 1 bit per second. A flow indicator on water,gas or electricity lines would tell the computer if there was flow on any particular line than if the computer knew by sensors on the users of that flow could determine if the flow was caused by a leak or short. The computer could either notify someone or take corrective action on it own. Automatic control of blinds by the need or lack of need of heat in that room. Automatic fans that would turn on if the outside temperature is less than the inside temperature and it is not raining . I could see a home with hundreds or thousands of sensors if they could be produce cheaply enough.
Talking on finding something; hopefully it could be used for a transmitter/receiver in my keychain, my PDA, my wallet, and my phone handset that I can use to triangulate their position when I want to find the darn things! Then I wouldn't spend so much time running around looking for them when I want to go out.
a.
This would ROCK at work. Most of our problems (production plant) stem from flexing and bending sensor wires. If we could just tie all the sensors on a machine into wireless interfaces, my job would be twice as easy... but... then they wouldn't need as many technicians.
Forget it, the idea stinks.
Here's a question: What about security? And not just for this "ZigBee" system, but for wireless networking and Bluetooth as well. Don't you think that with these PAN networks, security is going to be important?
Since I saw a Bluetooth keyboard the other day, I laughed and realised that keystroke loggers are obsolete. Why should a cracker go to the trouble of futzing around trying to get a user to install a trojan or leave a port open, when they can just point a hi-gain antenna at his desktop and read what the user's typing on the keyboard.
Hasn't anyone noticed all the hassle and screaming and yelling about the crappy security WEP provides? See http://www.starkrealities.com/wireless003.html The reason that happened is that people found out that when wireless networking is used, CRACKERS BREAK IN THROUGH THE CRAPPY SECURITY. Then they mess with your systems, steal your data and zombify your servers!
In the case of 802.11?? the crackers had to be withing a few yards to break in. With a PAN, they have to be within a few feet. Maybe you live in a lead-lined cavern all alone, but most people who use tech are walking around and sitting down next to people all the time. So if you just go and sit in a waiting room while using Bluetooth or some other PAN, the person sitting behind you pretending to play games on his PDA is breaking into your systems and slurping all your passwords and credit card numbers while you sit there none the wiser.
This looks like a security nightmare. Who wants that?
Sometimes the "writing on the wall" is blood spatter...