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Re: Solar Powered Woodshed

Discussion Board - Wed, 10/22/2014 - 20:51
I know your right, we convoyed to just West of P.B. from Ft Waynewright near Fairbanks a balmy -15°f when we left. everyone was told not to shut off their vehicles  some did though not a pretty sight burning  a spare tire under the crankcase to warm a ...

Re: Solar Powered Woodshed

Discussion Board - Wed, 10/22/2014 - 19:14
Quote from: Frank S on Today at 06:12:51 PM Chris the reason I asked was because I know your area sees some extreme cold weather periodically.
 Back when I  taught winter survival at point Barrow  we had a freak cold...

Re: 5kw Poncelet Wheel Project

Discussion Board - Wed, 10/22/2014 - 18:21
The forms were floating last night with the rebar preventing the forms from floating away, were there this morning, but disappeared during the day. Hopefully the rebar is still intact.

The river is flowing very fast. I'm estimating 15 feet per second +

Re: Solar Powered Woodshed

Discussion Board - Wed, 10/22/2014 - 18:12
 Chris the reason I asked was because I know your area sees some extreme cold weather periodically.
 Back when I  taught winter survival at point Barrow  we had a freak cold snap while out in the boonies the overnight temps dropped to -70°f overnight a...

Re: Simple Switch for yard light

Discussion Board - Wed, 10/22/2014 - 16:11
For a little more than $20 you can buy a fully functional solar motion light online.
http://www.homedepot.com/p/LightIt-6-in-Bronze-LED-Wireless-Motion-Activated-Weatherproof-Porch-Light-20031-107/204205351  I don't know what the on-delay settings are....

Re: Solar Powered Woodshed

Discussion Board - Wed, 10/22/2014 - 16:03
Now that's a woodshed! I like the repurposing of materials to create this lighting system.

Re: magnet piston engine

Discussion Board - Wed, 10/22/2014 - 15:59
Hi, thanks for the input. I started this in the diary section. You know the section that is described as a good place to log your projects.
Just for record I am NOT claiming OU.... Others started that mess....

I installed the the PMA. I still have to...

Re: Posting guidelines

Discussion Board - Wed, 10/22/2014 - 15:49
Quote from: DanB on April 08, 2010, 08:23:13 PMHomebrewed Electricity -- This section is for anything related to producing your own electricity, with the exception of free energy/overunity/perpetual m...

Re: Simple Switch for yard light

Discussion Board - Wed, 10/22/2014 - 15:12
Put a small regulator on the 5 volt switch, use relays on the output of it.

Re: wind datalogging

Discussion Board - Wed, 10/22/2014 - 15:09
I have a brand new 100ma meter is anyone needs one to experiment.

Re: magnet piston engine

Discussion Board - Wed, 10/22/2014 - 15:05
It takes energy to move that weight back up gravity, more than you get from it falling. To claim otherwise is OU

Re: magnet piston engine

Discussion Board - Wed, 10/22/2014 - 12:48
gww;
Thanks!
Full disclosure, I moved this thread (against my better judgement) to the quarantine section and I was then overruled and  it was moved back here.

I agree whole hardheartedly with gizmo about the need for seeing this to it's conclusion.
HO...

Re: Experimental 48VDC Generator

Discussion Board - Wed, 10/22/2014 - 11:09
Thanks.  I learned something - always a good start to the day.

Re: wind datalogging

Discussion Board - Wed, 10/22/2014 - 11:07
@ Sparweb.

The CA 3041 is working as a buffer, smooth moving needle on the analog meter.
And a clean Vdc output. The circuit gives a lineair scale so you can use a range of meters.
I have a 100ua Vu- meter .
The MC74HC14A Schmitt-trigger has the same d...

Re: Solar Powered Woodshed

Discussion Board - Wed, 10/22/2014 - 06:57
Hi Frank,

No, I didn't plan on that.  I think it will be fine.  The LED's only draw 700 mA, which is pretty minor.  Even when the battery is down on capacity when it gets real cold it will still work OK.  Fully charged, at close to freezing temp I left...

Re: wind datalogging

Discussion Board - Tue, 10/21/2014 - 22:16
Great work.

Is there anything special about the CA3140 Op-amp?
Would a MC74HC14A Schmitt trigger work for this too?  (I think I have one)

My typical microcontroller circuits use a 0-5V ADC range, with 10-bit resolution. 
If limited to 0-1V range, then...

Re: Solar Powered Woodshed

Discussion Board - Tue, 10/21/2014 - 22:16
Nice , thinking about the cold temps you get up there do yu have plans to encase the battery in an insulated jacket ?

Re: magnet piston engine

Discussion Board - Tue, 10/21/2014 - 21:54
My vote,
I believe it is bull hoky.  I also believe govertical was the very first person to respond to my very first post on this site in what was a helpfull maner.  I believe he may not walk the beaten path but has posted his failures at times with h...

Solar Powered Woodshed

Discussion Board - Tue, 10/21/2014 - 20:44
We put up a new woodshed because the old one was getting a bit ratty. The new shed holds 24 cords of firewood - plenty to get us thru a tough winter. I only got our shed about 1/3 full right now, but I'll finish filling it this week.

Gotta have lights ...

Simple Switch for yard light

Discussion Board - Tue, 10/21/2014 - 19:49
I have a 20 Watt 12 VDC reflector lamp designed to stick in the ground and illuminate a wall or entry. I have a 12 VDC deep cycle battery fully charged. I want a simple switch or two that will turn it on for several minutes when I drive in the driveway...
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