Deleted

[kingcolex]

.

[VirosaGITS]

So I am making a solar powered little set up just for a hobby and not an roi, will most likely just be throwing them on a solo pool. The host pc will be a pi 2, I plan on using a 15-20w solar panel that will charge either two 10,000mah or one 20,000mah battery backup. This is what will power the pi and the stick miners, now the stick miners I will probably need a powered hub which I have a couple of but they all ac plugs for their power.

So I either need a powered hub that draws the extra power via usb cable or some sort of adapter that allows the powered hub to somehow plug into a usb port.

So if anyone knows I would be really happy thanks!

I am not sure i understand, is there simply a problem with using powered USB hub ran by a AC-DC PSU?

From there you can use a USB Y splitter if you mean to get more power from the Hub to the stick. Especially useful to get more hashrate from the yummy Gekko Sidehack stick.

[whizz94]

pm me if you'd like more info.
I have some experience with sorting out power supplies for various rPi and connected things.
I can say what is in my known-good combination for running an rPi off batteries and solar.

[Zeta0S]

search for earth battery

[VirosaGITS]

So I am making a solar powered little set up just for a hobby and not an roi, will most likely just be throwing them on a solo pool. The host pc will be a pi 2, I plan on using a 15-20w solar panel that will charge either two 10,000mah or one 20,000mah battery backup. This is what will power the pi and the stick miners, now the stick miners I will probably need a powered hub which I have a couple of but they all ac plugs for their power.

So I either need a powered hub that draws the extra power via usb cable or some sort of adapter that allows the powered hub to somehow plug into a usb port.

So if anyone knows I would be really happy thanks!

I am not sure i understand, is there simply a problem with using powered USB hub ran by a AC-DC PSU?

From there you can use a USB Y splitter if you mean to get more power from the Hub to the stick. Especially useful to get more hashrate from the yummy Gekko Sidehack stick.

Essentially yes, I was planning on just using a 20w solar panel that has usb output so I don't have to deal with an inverter or any of that. http://www.amazon.com/X-DRAGON-Efficency-Technology-Smartphones-Foldable/dp/B00NGKPX4Y/ref=sr_1_3?ie=UTF8&qid=1447967910&sr=8-3&keywords=20+solar+panel

Oh, i see now. Sorry, i don't know how to do this. If you used a Y splitter, plug one into the controller and one into the solar hub, i think you might be crossing current which i believe to be very bad, because they would not be feeding exactly the same voltage. If that was not an issue, this would work.

A USB port only feed max 300mA and 500mA i believe, so i don't see how you could feed a usb hub from a usb port in the first place. Maybe there is a hardware hack possible to feed the current from the solar panel to a battery, then the battery feed the current needed to the Hub, with either a hack or using a barrel adapter.

You're going to need specialized advice here, maybe RichBC or someone else with good expertise like Sidehack will read and comment.

[VirosaGITS]

So I am making a solar powered little set up just for a hobby and not an roi, will most likely just be throwing them on a solo pool. The host pc will be a pi 2, I plan on using a 15-20w solar panel that will charge either two 10,000mah or one 20,000mah battery backup. This is what will power the pi and the stick miners, now the stick miners I will probably need a powered hub which I have a couple of but they all ac plugs for their power.

So I either need a powered hub that draws the extra power via usb cable or some sort of adapter that allows the powered hub to somehow plug into a usb port.

So if anyone knows I would be really happy thanks!

I am not sure i understand, is there simply a problem with using powered USB hub ran by a AC-DC PSU?

From there you can use a USB Y splitter if you mean to get more power from the Hub to the stick. Especially useful to get more hashrate from the yummy Gekko Sidehack stick.

Essentially yes, I was planning on just using a 20w solar panel that has usb output so I don't have to deal with an inverter or any of that. http://www.amazon.com/X-DRAGON-Efficency-Technology-Smartphones-Foldable/dp/B00NGKPX4Y/ref=sr_1_3?ie=UTF8&qid=1447967910&sr=8-3&keywords=20+solar+panel

Oh, i see now. Sorry, i don't know how to do this. If you used a Y splitter, plug one into the controller and one into the solar hub, i think you might be crossing current which i believe to be very bad, because they would not be feeding exactly the same voltage. If that was not an issue, this would work.

A USB port only feed max 300mA and 500mA i believe, so i don't see how you could feed a usb hub from a usb port in the first place. Maybe there is a hardware hack possible to feed the current from the solar panel to a battery, then the battery feed the current needed to the Hub, with either a hack or using a barrel adapter.

You're going to need specialized advice here, maybe RichBC or someone else with good expertise like Sidehack will read and comment.

Okay well I have decided I would only be powering one thing off of the solar panel and that would be an Xiaomi 20,000mAh battery. This  has two ports and can put out 5.1a 2v So the one powering the pi and the other usb would in theory go to a hub but I am starting to think that isn't possible. Maybe I could use one of these to power the hub via the battery bank?

The battery only has USB output? Because i don't know if a single port can handle all that load. If you had a battery that can output all its power through a single connector(if it can through the usb port then good), then power the hub and the Pi, then plug the hub in the Pi, then 2x 5.1 2v output could give you 16 watts to play with?

Just not sure what you would do with a 5.1a 2v output.

[RichBC]

The battery only has USB output? Because i don't know if a single port can handle all that load. If you had a battery that can output all its power through a single connector(if it can through the usb port then good), then power the hub and the Pi, then plug the hub in the Pi, then 2x 5.1 2v output could give you 16 watts to play with?

Just not sure what you would do with a 5.1a 2v output.

I think the bottom line here is that you have 5.1V and 2A , so 10.2W to play with. Not sure what the Pi takes but let's assume 500mA so 1.5A / 7.5W left for the Miner. So that should be good for running the stick at about 250MHz or if you want to run for longer then clock it down to 100MHz where I guess it takes about 4W.

Which brings us to what I think will be a bigger issue, what happens when the battery runs down? Left to it's own devices at some point either the Pi or the Miner will stop, if the Sun's out the battery will begin to charge and after a while there will be enough power available and everything will start again. However as you will likely be consuming more power than charge it will stop quite soon.

So ideally you will need something else (Running on the Pi?) to take control and wait for the battery to get a good charge before starting the Miner? A simpler strategy might be to charge the battery during the Day & mine at Night?


Rich

[RichBC]

The idea was to use a xiaomi 20,000mAh battery this seemed like enough to make it through the night and the 20w solar panel to charge it to full while also still giving power during the day, I am not sure if this would be enough though.
[/quote]

It would be great if it could work like that, you will however find that 20W from the panel will only be available in full sun and during the middle hours of the day. Although I suspect you are much better off than we are in the UK.   You would ideally need 12 Hours of full sun for 24 Hour running, but will not get that so some sort of management is going to be needed.

Rich