zigbee???
in [Design]
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From: JosephKK on 18 May 2010 06:33 On Sun, 16 May 2010 12:43:32 GMT, nico(a)puntnl.niks (Nico Coesel) wrote: >Joerg <invalid(a)invalid.invalid> wrote: > >>Nico Coesel wrote: >>> Joerg <invalid(a)invalid.invalid> wrote: >>> >>>> Jim Thompson wrote: >>>>> On Sat, 15 May 2010 10:29:08 -0700, Joerg <invalid(a)invalid.invalid> >>>>> wrote: >>>>> >>>>>> Charlie E. wrote: >>>>> [snip] >>>>>>> IIRC, Jennic has a development kit and modules that are not too >>>>>>> expensive, like $500 for the dev kit... >>>>>>> >>>>>> Hmm, no pricing on the site: >>>>>> >>>>>> http://www.jennic.com/products/modules/jn5148_modules >>>>>> >>>>>> But it's just bare modules. When designing I don't really need that and >>>>>> $500 just for home automation will raise a flag with SWMBO, just like a >>>>>> $500 handbag would with me :-) >>>>> Cheapskate! You mean your wife has no Coach purse? >>>>> >>>> Nope. We tend to use such monies in more useful ways. For example as a >>> >>> OTOH buying a bag helps a few kids in Asia to fill their bellies. >>> >> >>Sending money to an organization where you can be sure that >80% of >>donations make it to the recipients in the form of food and medication >>helps a lot more. > >IOW: Buy from Dealextreme.com instead of Mediamarkt, Wallmart, Fry's, >etc, etc. > >I don't know any organization that helps people efficiently. Over here >the anual door-to-door collection result is barely enough to pay the >director's salary. Director's salary ?????????? Big as the Red Cross are they?
From: Joerg on 18 May 2010 11:35 Michael A. Terrell wrote: > Joerg wrote: >> Michael A. Terrell wrote: >>> Joerg wrote: >>>> Michael A. Terrell wrote: >>>>> Joerg wrote: >>>>>> Michael A. Terrell wrote: >>>>>>> D Yuniskis wrote: >>>>>>>> Hi Michael, >>>>>>>> >>>>>>>> Michael A. Terrell wrote: >>>>>> [...] >>>>>> >>>>>>>>> If I can scrape up the $100 before they others are gone, I'd prefer a >>>>>>>>> newer and faster server that draws less power. :) >>>>>>>> Why? :> Is there a reason you *need* a "server" instead of >>>>>>>> a regular desktop machine? I.e., I only run my servers >>>>>>>> because I want long term reliability (power supplies and >>>>>>>> spindles). Most of my regular work I do on consumer >>>>>>>> grade machines. Servers tend to get reliability at the >>>>>>>> expense of noise and size. :< >>>>>>> The server can go into a closet with the other network hardware, >>>>>>> cable modem and netwoerk switch hardware. It free up desk space where I >>>>>>> work on computers, as well. ... >>>>>> And makes your electric meter really spin up :-) >>>>> And? >>>>> >>>> Oh yeah, I forgot, it just comes out of the wall outlet so it's free :-) >>> No. 'And' means I can work faster from a local server. The quicker >>> I finish what I'm working , the sooner it gets shut down. Without a >>> dedicated server, files are scattered over hard drives, CD-ROM, DVD & >>> USB sticks all over the place. I may have five computers up to find >>> what I need. I also want to run a real NNTP server to allow me to >>> filter out some idiots and countries before they ever hit my computer. >>> >> That can also be done by a non server-grade PC, they usually use less >> electricity. > > > Not all servers are energy hogs. The main difference is redundant > power supplies and cooling fans to improve reliability. The other > difference is the case. Rack mounted to keep them and the cabling in its > place while allowing easy access for service or upgrades. > > Some gaming computers have a 1 kW power supply. You can run multiple > commercial servers on less power. > > > >>> Would you like to compare electric usage? >>> >> WRT my file server, yes, anytime. Hint: It runs on a wee 12V line. > > > I'm talking the total usage for your home & business. My bill has > run around $50 for the last few months. ... A Dollar number means nothing because electricity is much cheaper in Florida. How many kWh in one month? Last month's bill was typical here, 652kWh which comes to around $75. And this includes: - Running a 3000+ sqft building - Pool pumps which eat the lion's share - Security perimeter lighting all night - HP boat anchors running all day long > ... There is at least one computer > on, around the clock. At times, there are five or more for hours at a > time. If you can get by with what you have, that's great, but I have > close to 500 CD-ROMs full of driver software, and around 120 GB of > drivers and other information scattered across a bunch of older hard > drives. Also, a server doesn't have to run 24/7 for my needs. I > generally only spend some time, two or three days a week working on old > computers. Your image of a server is a full rack with a dedicated 30 > 240 VAC service. Mine is a rack mount cased computer that draws about > the same as an average desktop computer. > Have you measured it? Rack mounted servers can be real power hogs. The li'l 12V LAN drive I have is 500GB. They also have 1TB, 2TB and 4TB versions at similar economic power intake but I don't need this much and thus didn't want to spend the extra dough for something I'll never need. It uses around 10W when running, BTW. Try that with your server. > > The HP ProLiant DL140 I posted a link to has a single 325 W power > supply, which is smaller than a lot of desktop computers. For one thing, > servers don't need fancy video cards that can double the power > requirements. Some have redundant supplies, but can run on a single > supply. Server power supplies are usually better designed, and more > efficient than the $6 supply shipped with a new desktop. If they > weren't, servers would drop like flies. It would cost a lot more to > cool a data center, and require larger backup power sources. > > Servers don't need large and power hungry monitors. They don't need > chrome bumpers or tail fins, either. They are designed to do a job > reliably, and efficiently > My LAN drive doesn't either, makes very little noise, and it's smaller than my bible :-) -- Regards, Joerg http://www.analogconsultants.com/ "gmail" domain blocked because of excessive spam. Use another domain or send PM.
From: Joerg on 18 May 2010 11:36 JosephKK wrote: > On Sat, 15 May 2010 16:06:57 -0700, Joerg <invalid(a)invalid.invalid> > wrote: > >> Nico Coesel wrote: >>> Joerg <invalid(a)invalid.invalid> wrote: >>> >>>> Jim Thompson wrote: >>>>> On Sat, 15 May 2010 10:29:08 -0700, Joerg <invalid(a)invalid.invalid> >>>>> wrote: >>>>> >>>>>> Charlie E. wrote: >>>>> [snip] >>>>>>> IIRC, Jennic has a development kit and modules that are not too >>>>>>> expensive, like $500 for the dev kit... >>>>>>> >>>>>> Hmm, no pricing on the site: >>>>>> >>>>>> http://www.jennic.com/products/modules/jn5148_modules >>>>>> >>>>>> But it's just bare modules. When designing I don't really need that and >>>>>> $500 just for home automation will raise a flag with SWMBO, just like a >>>>>> $500 handbag would with me :-) >>>>> Cheapskate! You mean your wife has no Coach purse? >>>>> >>>> Nope. We tend to use such monies in more useful ways. For example as a >>> OTOH buying a bag helps a few kids in Asia to fill their bellies. >>> >> Sending money to an organization where you can be sure that >80% of >> donations make it to the recipients in the form of food and medication >> helps a lot more. > > I am a bit torn at that level. Propping up overpopulation (more than the > relevant economy can provide for) strikes me as an error, and poor > ethics. Sure, but you can't let the kids starve. We cannot punish them for the mistakes their parents and their countries made. -- Regards, Joerg http://www.analogconsultants.com/ "gmail" domain blocked because of excessive spam. Use another domain or send PM.
From: Joerg on 18 May 2010 12:08 JosephKK wrote: > On Sat, 15 May 2010 13:03:37 -0700, D Yuniskis <not.going.to.be(a)seen.com> > wrote: > >> Hi Joerg, >> >> Joerg wrote: >>> Nope. We tend to use such monies in more useful ways. For example as a >>> donation to Guide Dogs for the Blind, after getting a trainee dog that >>> had to be realeased because of a medical condition and that my wife then >>> got through the therapy dog test. Now the two are serving Alzheimer >> The training that guide dogs undergo is *amazing*! >> Also, the relationships they have with their "masters" (:<) >> is "complicated". Folks often think it's on a par with >> that of "dog and owner" and end to forget that these >> are *service* animals. I.e., if your *dog* (pet) "does something >> wrong" (misbehaves) it's an "inconvenience"; if your GUIDE DOG >> screws up, it could be your *life*! :-/ > > Yes. Constructive disobedience is (one of?) the last and usually most > difficult (and most important) for them to master. High washout rate. > One of the dogs we were sitting did just that during his inauguration walk with his newly assigned blind person. He refused to cross a street but forced the blind person (who usually doesn't know the busy Bay Area) to circle around until they got to where the push button for the street crossing is. They don't exactly learn this circling around, he simply decided that on his own because it was safer. I do miss him, but that's part of the whole game. And he left a "souvenir scratch" on the desk where I am right now. [...] -- Regards, Joerg http://www.analogconsultants.com/ "gmail" domain blocked because of excessive spam. Use another domain or send PM.
From: D Yuniskis on 18 May 2010 13:59
Hi Joerg, Joerg wrote: > D Yuniskis wrote: >>> Sure you can. I accepted the default names because there's only one >>> each. But you could also name one Alpha, the next one Bravo, or >>> whatever. Or HP5L_Office, HP5L_Lab. >> >> So, it gives you some way of *naming* them? >> >> I.e., if I you went out tomorrow and bought *two* MORE >> LJ5L's and plugged both of them in at the same time, >> how would they appear in your "printers list"? How would >> you know which is A and which B? > > Control Panel -> Printers and Faxes -> right-click on the Printer where > you wish to change the name -> Type in a name that sounds cool. Yes, but the point of my example was, you have *two* of these identical printers seen, now, for the very first time by you *and* your machine at exactly the same instant. How does it differentiate between them? HP5L_1 and HP5L_2? How do you know which is _1 (since *it* -- or something -- decided to call one of them _1 and the other _2) >> Even MS realized their folly when they belatedly added >> support for the TCP/IP protocols. >> >> Different for SOHO applications in which you can eliminate the >> need for a name server, etc. > > Well, ok, for a company the size of Dupont or Ford this might not be so > good. But here it simply works. Yes, MS networking was designed for SOHO's, not "businesses" (It can be used there but it increases maintenance issues) >> When I build a new machine, first thing I do is retrieve the >> log from FTP server for whichever machine is closest in >> personality to the one I am building. >> >> <shrug> I wouldn't recommend this approach to larger businesses. >> But, for me, it is a good balance between recordkeeping and >> efficiency (I can't afford the time to *be* an IT department!) > > Larger businesses are actually going paperless. Well, some. I have as <grin> Most of the "paperless" offices I've been exposed to generate MORE paper than ever! They just don't *keep* it as long! I think I barely use a single ream of paper in a year. The biggest threat for me is some of these 1000 page datasheets. Try as I might, I just can't trudge through 1000 pages "on a screen" when I am doing the initial design (I can easily consult a PDF as a *reference*, ex post facto, but not when I am initially trying to grasp the various I/O's available, the restrictions on their use, shared resources, etc. -- I like thumbing through *pages* with a pen in hand to make notes...) > well but I can't part with my old databooks and I will never trust > manufacturers to keep legacy datasheets because mostly they don't. So > those 10ft of shelf space in the hallway must be mine, and my wife knows > that. She stopped asking for it :-) I pruned a lot of databooks a few years back (I had 80 "copy paper" cartons full of them). It was just *way* too much bulk to hold onto. I saved anything that pertained to old projects. And, some old "classics" that have long since been out of print (older tomes seemed to have "better information" -- not just "data"). Too many new datasheets are "vanilla" -- or, outright contain grossly incorrect application data. |