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pollinator
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Location: New Mexico USA zone 6
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Ebo David wrote:Sorry that I was not able to find/get a copy myself.


Scroll up almost to the top of this page.  The download is there, just not as obvious as it might be.  Look for the light blue bar across the screen.
Image1.jpg
[Thumbnail for Image1.jpg]
 
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Yahoo!  Downloaded successfully!
Thank you, guys!
 
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Combing through 100 youtube videos with 1000 affiliate links on off-grid solar systems was making me dizzy.
Thanks, Ben Peterson, for the plans and the simple explanation of the off-grid solar system. Totally worth the money.

We want to build a version of this system, but we are on a tight budget. For that I have a question:

Is it possible to use only 3 batteries and 3 solar panels and upgrade later? And if we need more than 600W could we upgrade? Like use 10 batteries and 10 solar panels?

Sorry for the noob question. Thankful for help.

Best,
Tilman
 
pollinator
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Hi Dan,
Saw you hadn't received a reply to your question. Now, I'm no expert, but I did design and install the system for the boat we lived onboard for 6 years - and we never once had to run the engine to charge the batteries. Which was pretty useful when we had 18 days (and nights) at sea powering nav systems, computers and lights, with an engine we couldn't use. Anyway, my understanding is that whilst you can add on solar panels (up to the capacity of your controller, and then add controllers for more panels) ideally, your battery bank is best if it contains batteries of the same age and quality as old batteries within a system can pull down the performance of new ones. I'm talking here about lead acid and AGM - I've no experience with edison or gel. So, if it was me, I'd spend as much as I could on batteries, and then add on more solar later. If you're on-grid, and your solar array is insufficient to fully charge the bank, you could charge them/top them up via that.  Also, with AGM/lead acid/gel, you'll prolong their life if you dont discharge them below 50-60% so whatever the capacity of the bank, you have only half or less of that available to use.
As I said I'm no expert so others may be able to give you a different take on it.
Regards
Lesley
 
Dan Tilman
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Hi Lesley,
Thanks for your reply. In the meantime I have built a solar system similar to the one in the book. 4 x 100 watt panels, 4x 100aH batteries, 4x 20v charge controllers and a 2200 watt inverter.

It powers our tiny house with lights, outlets for phones, computers, printer, and even the washer.

I’m really happy about the system. But I have one question:

How to you tell what percentage the batteries have?

Maybe somebody can help.

Best regards,
Tilman
 
lesley verbrugge
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Well done1 Great feeling to have constructed something that works and all by yourself!

You'd need to add a battery monitor.  There are various types around fThe one I use is Smartgauge altho a UK company, they ship worldwide. It's basically plug and play and very accurate. We needed the accuracy because of the systems we were running - a home system needs to be reliable too, but the house wont end up on a reef if the batteries are dead LOL. I liked the smart guage because it didn't need any other parts to make it work, there's no voltage drop, and no loss of accuracy over time.  The website link has some good technical resources.

Nowadays there's a much wider choice of monitors including wireless I believe.

Regards

lesley
 
pollinator
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Dan Tilman wrote:Hi Lesley,
Thanks for your reply. In the meantime I have built a solar system similar to the one in the book. 4 x 100 watt panels, 4x 100aH batteries, 4x 20v charge controllers and a 2200 watt inverter.

It powers our tiny house with lights, outlets for phones, computers, printer, and even the washer.

I’m really happy about the system. But I have one question:

How to you tell what percentage the batteries have?

Maybe somebody can help.

Best regards,
Tilman

state of charge monitors for small 12 volt systems are notoriously inaccurate. Voltage at rest is your best easiest indicator.
This chart is pretty good depending on what type of batteries you have. This is for a flooded deep cycle
https://images.app.goo.gl/RMXCiCq6j1QnkieV6

Out of curiosity why 4 charge controllers? Each will have a standby loss so usually you get one that can take the input from all 4 to minimize losses...
Cheers,  David
 
lesley verbrugge
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can't make the quote thing work so posted below LOL
 
lesley verbrugge
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David makes a good point. Smartgauge doesn't go out of sync with the batteries like most of the others do and an added bonus is no shunts needed, so no voltage loss from those. It displays voltage as well as charge status.

I wondered about the number of controllers too, given the panels are only 100W. What Ampage are your controllers Dan? Not criticising just interested (yeah ok, being nosy!)

Lesley
 
Dan Tilman
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Thanks for the tips for the smart battery monitor. I will look into that. I have used these very simple solar charge controllers. I believe they are 20A

20A Solar Charge Controller Solar Panel Battery Intelligent Regulator with Dual USB Port 12V/24V PWM Auto Paremeter Adjustable LCD Display https://www.amazon.com/dp/B072MMDY4F/ref=cm_sw_r_cp_api_i_wzs7Eb3VRF4MX
 
Dan Tilman
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Hi David,
I used four charge controllers, because it was what they did in the solar station pdf. Each solar panel has its own.
 
lesley verbrugge
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if you check the specs of your panels it'll give you their output in Amps -probably 6amps each?

6A+6A=12A then add safety margin (25% of 12amps =3A) 3+12=15Amps

6 + 6+ 6=18 +25% (4) = 22 which is higher than the 20 amp rating of your controller.

so, you could safely run two panels through each of your controllers - if you wished to. :o) (or if one of them stops working, you dont need to panic, just wire it into one of the other controllers)

The main advantage of a separate controller for each is that  (if your controller offers it) you can see the individual performance of the panels and spot errors/problems. You can't identify a dodgy panel if there are multiple panels wired through one controller.

Davis is right, there are voltage losses with every item/fuse/connection your current passes through, but, your system works for you and that's what matters after all!

regards
Lesley
 
lesley verbrugge
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Thank you for making this a freebie via the dailyish email. It's much appreciated. I particularly enjoyed seeing the build of the structure.

Understand now why Dan used one controller per panel  - but, if you look closely they are 7amp controllers, so, if you're using a 20amp controller like Dan did, then you'd need only one per pair of panels as calculated above.
 
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Hello ! Thank you sooo much for this freebie <3
I've been trying to download it for the last half hour and the download fails every time... I don't know if it is because the file is very big and my connection quite slow and busy (I'll try again tonight) or if there are too many people trying to download it right now or if there is another problem... Does anyone else have the same issue ?
 
Ilektra Kou
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Ilektra Kou wrote:Hello ! Thank you sooo much for this freebie <3
I've been trying to download it for the last half hour and the download fails every time... I don't know if it is because the file is very big and my connection quite slow and busy (I'll try again tonight) or if there are too many people trying to download it right now or if there is another problem... Does anyone else have the same issue ?



So, it seems my connection was the issue, as I went to a friend's house to download it and it was ok. Thank you again
 
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Got the link as the freebee in the daily-ish, but something is failing when I try to download. It appears the file downloads successfully, but the file that downloads is only 10-12 Kb and won't open as a valid pdf; tried 4-5 times, got the same result with slight variance in file size. I've previously been able to successfully download other files linked from the daily-ish so I'm assuming it's not an issue on my end. I attached one of the files that downloaded in case it helps in troubleshooting the issue. Thanks!
Filename: SolarStation70pg-200401-195215.pdf
File size: 10 Kbytes
 
master steward
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Hmmm, how fast is your internet? I've had my internet give up after attempting to download a large files, and this file is 60 megabytes. I just tested downloading it, and it worked for me (I have relatively slow satellite internet), but I know that internet speeds can be slower than mine (I used to have dial-up speed satellite internet).

Maybe you could try downloading it somewhere with faster internet? Or maybe with a different device/computer?

And, you have perpetual access to the thread, so if you aren't able to download it today, you will still be able to download it a different day. But, I totally understand wanting to download it sooner rather than later!

 
Andrew Welser
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I'm in the suburbs of a large city with pretty decent internet; it's not fiber, but it's no dialup either. My wife was streaming tv last night when I tried, but it's doing the same thing this morning with no other traffic on our end. The download of the 10k file completes after only a second or so, almost instantaneously, like it thinks it got the whole file; not after a min or so like the 10k was all it was able to get before it timed out.

I thought the download offer from the daily-ish was only good for 48hrs, but I guess it's just the link in the email that expires? I'll keep trying then. Thanks for getting back to me so fast!
 
Nicole Alderman
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You just have to click the freebie link within 48 hours. Once you click a freebie link, you then have eternal access to the freebie and it's downloads. So, yes, please keep trying! (You can see a list of all the freebie/digital market stuff you have access to here: permies.com/forums/premium/list/#mystuff)

I'll keep looking into this to see if I can figure why it's not working for you.
 
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I have been trying to download the
Wiki !!! Solar Station Construction Plans by Ben Peterson -- ebook
I click on the download button but nothing happens.  Please assist, it could be my slow internet but nothing happens, it doesn't even try so I don't know.  Thank you
 
Nicole Alderman
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I'm thinking it might be your slow internet. It's downloading for me, but very slowely. The file is 60 megabites, so it's pretty large.

Maybe try downloading somewhere else, or during a time when less people are using internet (I have satellite internet, and weekends and afternoons have a lot slower internet than the rest of the time).

If you got access to this through the dailyish freebies, have no worry! Since you clicked the freebie link, you have perpetual access to this, and can try as many times as you need to download it. You can try again tomorrow, a week from now, a year from now, etc. You always have access to it when logged in!
 
Saralee Couchoud
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I got it to try and download but it always fails.  This is due to my internet service.  I will try again in the morning when hopefully everyone has gone to work and is not using internet.  Thanks
 
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Does anyone know the dimensions of the 600W Solar Station (not the Grid-Tie system)?  I would need it to fit in a small area.  Thanks!
 
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The links to the wastebot website show "domain name for sale". I was really interested in the plastics recycler. Is there another place he's posted that?
 
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Ellendra Nauriel wrote:The links to the wastebot website show "domain name for sale". I was really interested in the plastics recycler. Is there another place he's posted that?



I sent an email to ben.
 
Nicole Alderman
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Ellendra Nauriel
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Nicole Alderman wrote:It looks like his new website might be here? https://www.woodgasifierplans.com/courses/desktop-diesel




That looks like it's an online class that teaches how to use a wastebot, but not how to build or acquire one.

It makes it look like at some point you could buy a Wastebot, ready to use. The only other place I've seen such a thing was by a company in Japan, and they wanted more than $16,000 for one. I have enough experiments running that I don't want to have yet another thing I need to practically invent. I'd really rather have a plastics pyrolysis machine that's ready to use. If it can run more-or-less automatically, even better.

You can buy factory-sized ones easily, but I just want a small one for the home.
 
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The link to wastebot.com for the plastic recycling lab information leads to a GoDaddy placeholder page for the domain name instead of the interesting information I'd hope to find. Any chance for an update on the information, or even better, the actual finished plans? Thanks!
gift
 
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