Weatherproof "button"
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From: krw on 9 May 2010 23:34 On Sun, 09 May 2010 11:05:51 -0700, "JosephKK"<quiettechblue(a)yahoo.com> wrote: >On Thu, 06 May 2010 22:20:42 -0500, "krw(a)att.bizzzzzzzzzzzz" ><krw(a)att.bizzzzzzzzzzzz> wrote: > >>On Thu, 06 May 2010 20:38:51 -0400, Phil Hobbs >><pcdhSpamMeSenseless(a)electrooptical.net> wrote: >> >>>On 5/6/2010 8:13 PM, krw(a)att.bizzzzzzzzzzzz wrote: >>>> On Thu, 06 May 2010 20:03:55 -0400, Phil Hobbs >>>> <pcdhSpamMeSenseless(a)electrooptical.net> wrote: >>>> >>>>> On 5/6/2010 7:57 PM, krw(a)att.bizzzzzzzzzzzz wrote: >>>>>> On Thu, 6 May 2010 16:10:44 -0700 (PDT), "langwadt(a)fonz.dk"<langwadt(a)fonz.dk> >>>>>> wrote: >>>>>> >>>>>>> On 6 Maj, 23:33, Joerg<inva...(a)invalid.invalid> wrote: >>>>>>>> D Yuniskis wrote: >>>>>>>>> Hi Joerg, >>>>>>>> >>>>>>>>> Joerg wrote: >>>>>>>>>> D Yuniskis wrote: >>>>>>>> >>>>>>>>>>> I use a WiFi PDA to do that -- no need to rely on the phone >>>>>>>>>>> company for it's delivery! :> But, I don't want to have >>>>>>>>>>> to carry it with me all the time -- *especially* when out >>>>>>>>>>> in the yard. >>>>>>>> >>>>>>>>>> Then you are probably too old. >>>>>>>> >>>>>>>>> Without a doubt! :> >>>>>>>> >>>>>>>>>> So am I. Youngsters carry their portable electronic gizmos with them >>>>>>>>>> all the time. I'll never understand that. >>>>>>>> >>>>>>>>> Can you spell "lonely"? ;) >>>>>>>> >>>>>>>>> I also can't imagine any sort of portable device standing >>>>>>>>> up to the sort of abuse it would experience if I carried it >>>>>>>>> on my person all the time. E.g., felling trees, digging holes, >>>>>>>>> doing carpentry, etc. My eyeglasses have *glass* lenses >>>>>>>>> because plastic ones scratch in no time at all (my glass >>>>>>>>> lenses actually have deep scratches in them, presently) >>>>>>>> >>>>>>>> Where can one get non-prescription "magnifier" type glass-lens >>>>>>>> eyeglasses? The Dollar-store or Costco kind. I just need 1.5x to 3.5x, >>>>>>>> depending on whether reading or soldering 0402 stuff. So far mine are >>>>>>>> all plastic and yeah, they do scratch quickly. Scratches are ok for my >>>>>>>> lab bench SMT glasses but not for the weaker ones I use during CAD work. >>>>>>>> >>>>>>> snip >>>>>>> >>>>>>> do they even make glasses with actual glass anymore? never had a pair >>>>>>> that >>>>>>> wasn't plastic >>>>>> >>>>>> Sure, but you have to special order them. They're expensive, too. >>>>>> >>>>>>> I wear presciption glasses ll the time so they are ofcourse expensive >>>>>>> plastics with >>>>>>> scratch resistant coarting and they they don't just lay around, they >>>>>>> sit on my >>>>>>> nose but they last for years without scratches. >>>>>> >>>>>> AFAIK, all plastic lenses have "scratch resistant" coatings. The kicker, for >>>>>> the optometrist, is the anti-glare coatings. I just bought a pair of lenses >>>>>> for my second pair (the ones that get scratched ;). The lenses (scratch >>>>>> resistant bifocals) were $75. If I wanted the anti-glare coating it was >>>>>> another $75. >>>>> >>>>> Try out Zenni Optical. You can get 5 pairs with anti-glare for that >>>>> $150. I'm terribly hard on reading glasses for some reason, so I buy lots. >>>> >>>> Prescription bifocals? That asked, the ones I got from our vision plan >>>> weren't worth $20 (and I paid for the anti-glare coating). >>> >>>Any prescription you like, in most varieties including progressives in >>>photochromic PC. Bifocals are a bit more, but still very reasonable. >>>Check it out. >> >>I priced a random pair at about $40, not bad at all. Cheaper than the other >>online places I looked, too. They only charge $5 for the anti-reflective >>coating. The problem, like my optometrist, they don't have any lenses (at >>least that I found) large enough. These are something like 44x65. It's clear >>how "eye care" insurance plans can charge a couple of bucks a week, though. > >And still only a modest "discount" on worthwhile frames. It was about half (of what?) on my last pair of decent frames (which I wear around the house). Without the insurance you pay the full boat but there is a discount negotiated by the insurance company. The real value of the insurance is that negotiation. It's rather obvious that the "insurance" isn't. Costs for "eye care" are pretty well know ahead of time (I didn't buy it when I didn't need glasses), so there is no "insurance pool".
From: mpm on 12 May 2010 09:47 On May 4, 4:05 pm, D Yuniskis <not.going.to...(a)seen.com> wrote: > Hi, > > I need some sort of "button" (sensor?) that I can locate out > "in the elements" and use to activate the irrigation system. > I.e., "push this button to turn on the water supply". > > It need not be a traditional "button" (in the electrical sense). > E.g., a pressure sensitive pneumatic switch, a photoreflective > sensor, etc. would all provide the intended function. The > trick is finding something that will operate reliably and for > many years when exposed to sun, rain, ice, etc. > > Ideally, the thing will be cosmetically unassuming so you > don't notice it unless you go *looking* for it (despite the > fact that it will be "in plain sight"). > > And, it should be operable without requiring anything other > than the typical parts of the human anatomy. :> > > My first thought was a traditional pushbutton in a flexible > rubber hood. But, I suspect the Sun will eat the hell out > of the plasticizers in the "rubber" in short order. > > I then thought of a magnet sliding in a channel passing a > Hall effect device (i.e., put a spring behind the magnet). > But, you'd need something (flexible) to keep the magnet > "sled" from falling out of its channel, etc. > > Are there any other clever approaches that might work? > Even "weatherproof" switches fail one or more of the > above criteria... :< Try: Eaton / Cutler-Hammer non-illuminted pushbuttons. They're Allen-Bradley look-alikes, but much less expensive. We use them outdoors all the time, in horrible conditions. Link: http://www.automationdirect.com/adc/Shopping/Catalog/Pushbuttons_-z-_Switches_-z-_Indicators/Eaton_Cutler-Hammer_30mm_(HT800_Series)/Non-Illuminated_Pushbuttons_(Flush_-a-_Extended)
From: Don Lancaster on 26 May 2010 10:40 On 5/4/2010 2:05 PM, D Yuniskis wrote: > Hi, > > I need some sort of "button" (sensor?) that I can locate out > "in the elements" and use to activate the irrigation system. > I.e., "push this button to turn on the water supply". > > It need not be a traditional "button" (in the electrical sense). > E.g., a pressure sensitive pneumatic switch, a photoreflective > sensor, etc. would all provide the intended function. The > trick is finding something that will operate reliably and for > many years when exposed to sun, rain, ice, etc. > > Ideally, the thing will be cosmetically unassuming so you > don't notice it unless you go *looking* for it (despite the > fact that it will be "in plain sight"). > > And, it should be operable without requiring anything other > than the typical parts of the human anatomy. :> > > My first thought was a traditional pushbutton in a flexible > rubber hood. But, I suspect the Sun will eat the hell out > of the plasticizers in the "rubber" in short order. > > I then thought of a magnet sliding in a channel passing a > Hall effect device (i.e., put a spring behind the magnet). > But, you'd need something (flexible) to keep the magnet > "sled" from falling out of its channel, etc. > > Are there any other clever approaches that might work? > Even "weatherproof" switches fail one or more of the > above criteria... :< Try your closest hot tub store. -- Many thanks, Don Lancaster voice phone: (928)428-4073 Synergetics 3860 West First Street Box 809 Thatcher, AZ 85552 rss: http://www.tinaja.com/whtnu.xml email: don(a)tinaja.com Please visit my GURU's LAIR web site at http://www.tinaja.com
From: mike on 26 May 2010 15:53 D Yuniskis wrote: > Hi, > > I need some sort of "button" (sensor?) that I can locate out > "in the elements" and use to activate the irrigation system. > I.e., "push this button to turn on the water supply". > > It need not be a traditional "button" (in the electrical sense). > E.g., a pressure sensitive pneumatic switch, a photoreflective > sensor, etc. would all provide the intended function. The > trick is finding something that will operate reliably and for > many years when exposed to sun, rain, ice, etc. > > Ideally, the thing will be cosmetically unassuming so you > don't notice it unless you go *looking* for it (despite the > fact that it will be "in plain sight"). > > And, it should be operable without requiring anything other > than the typical parts of the human anatomy. :> > > My first thought was a traditional pushbutton in a flexible > rubber hood. But, I suspect the Sun will eat the hell out > of the plasticizers in the "rubber" in short order. > > I then thought of a magnet sliding in a channel passing a > Hall effect device (i.e., put a spring behind the magnet). > But, you'd need something (flexible) to keep the magnet > "sled" from falling out of its channel, etc. > > Are there any other clever approaches that might work? > Even "weatherproof" switches fail one or more of the > above criteria... :< Many crosswalk traffic lights have a "push for walk signal" button. Go take a look at one. If you go at night...and take a screwdriver...and wear a hoodie...
From: JosephKK on 27 May 2010 00:08
On Wed, 26 May 2010 12:53:33 -0700, mike <spamme0(a)go.com> wrote: >D Yuniskis wrote: >> Hi, >> >> I need some sort of "button" (sensor?) that I can locate out >> "in the elements" and use to activate the irrigation system. >> I.e., "push this button to turn on the water supply". >> >> It need not be a traditional "button" (in the electrical sense). >> E.g., a pressure sensitive pneumatic switch, a photoreflective >> sensor, etc. would all provide the intended function. The >> trick is finding something that will operate reliably and for >> many years when exposed to sun, rain, ice, etc. >> >> Ideally, the thing will be cosmetically unassuming so you >> don't notice it unless you go *looking* for it (despite the >> fact that it will be "in plain sight"). >> >> And, it should be operable without requiring anything other >> than the typical parts of the human anatomy. :> >> >> My first thought was a traditional pushbutton in a flexible >> rubber hood. But, I suspect the Sun will eat the hell out >> of the plasticizers in the "rubber" in short order. >> >> I then thought of a magnet sliding in a channel passing a >> Hall effect device (i.e., put a spring behind the magnet). >> But, you'd need something (flexible) to keep the magnet >> "sled" from falling out of its channel, etc. >> >> Are there any other clever approaches that might work? >> Even "weatherproof" switches fail one or more of the >> above criteria... :< > >Many crosswalk traffic lights have a "push for walk signal" button. >Go take a look at one. > >If you go at night...and take a screwdriver...and wear a hoodie... If you want one that bad, i will send you one free. I know someone that has to throw them away (in perfect working order). This is strictly onesie, for people i consider worthy, and on request, no repeats. |