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Solar Powered System FI8910W to FI9821W

by jkamm » Tue Mar 19, 2013 1:00 am

I have successfully setup a FI8910W on a 15W Solar panel (12V battery with a switching power supply to "step down" the voltage to 5V) it worked perfectly for several weeks. My testing showed that it would pull about 300ma when idle and about 600ma when moving (I sized the panel and battery based on those measurements).

I just purchased a FI9821W camera so I could get higher resolution. I measured the amp draw and was shocked. IT IS TWICE AS MUCH as the other camera (600ma idle and 1.2 amps moving)!?!? So now I would need a 30W panel and probably two batteries to run the camera!?!? Wow.

Any idea why this camera is such a power hog? Are their other cameras that would be better suited for off-grid applications?

Jon

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Jon

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Re: Solar Powered System FI8910W to FI9821W

by Liam » Tue Mar 19, 2013 10:13 am

Hey Jon,

I might suggest updating the camera firmware to the latest at www.foscam.us/firmware (version 1.1.1.11).

The manufacturer let us know that the wifi chipset on the FI9821W was originally overclocking and thus causing the camera to run very hot, while also causing some wireless connection issues. Not sure if that could be connected with the issue you're having but it's worth a shot.

Liam

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Re: Solar Powered System FI8910W to FI9821W

by GMaster1 » Tue Mar 19, 2013 10:42 am

Post some pics of the setup! I've been curious about starting this project with a FI8910. 

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Re: Solar Powered System FI8910W to FI9821W

by jkamm » Tue Mar 19, 2013 2:45 pm

I updated to 1.1.1.11 last night before I tested it. Amazing that the power requirements would be so vastly different. I could see that the servos could use more power but twice as much power when it is sitting idle?

I will post my solar test project with the details.

Jon

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Jon

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Re: Solar Powered System FI8910W to FI9821W

by jasper9 » Tue Apr 09, 2013 3:42 pm

Curious if you could post details on your solar set up Jon. Thanks!

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Re: Solar Powered System FI8910W to FI9821W

by jobzombi » Tue Apr 09, 2013 10:19 pm

Yes please post the setup. I've been wanting to setup an outdoor cam, but was having trouble seeing where to direct cables from. A solar panel would work just fine with a nicely sized battery to power it overnight as well.

And just to make sure hows the cam doing still with the solar panel? I want to get the FI8919W eventually. It's out of stock now in white.

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Re: Solar Powered System FI8910W to FI9821W

by calde315 » Mon May 20, 2013 12:41 pm

This is exactly what I have been looking for. I have for the past 6 or so months been setting up a outdoor camera, with the 8910 in mind. I have all the pieces except the solar panel in place. Was trying to calculate out what size I would need, but didn't know the consumption of the camera itself.

As I have it right now, I'm using an inverter to convert DC -> AC and then using the regular corded plugs. Am I going to be less efficient then converting the camera to run DC? I also need my 3G router to run off AC too unless I can convert that. This weekend I plan on tying this up and I'll post my setup for those who are interested here.

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Re: Solar Powered System FI8910W to FI9821W

by GldRush98 » Mon May 20, 2013 10:45 pm

The cameras already run on DC. The wall wart you plug in converts AC to DC. So yes, by going DC->AC->DC it is less efficient than just going straight DC and stepping down the voltage. I'd be willing to bet the 3G Router is DC as well.

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Re: Solar Powered System FI8910W to FI9821W

by calde315 » Tue May 21, 2013 12:23 pm

Did it come with a DC plug? I forgot if that was the case. If not, what style plug do I need. The router I have is a Cradlepoint CTR 35

http://3gstore.com/product/2736_cradlepoint_ctr35.html

Anyone know which plugs I need to use for this? This would be great if I can power off straight DC. What does a person use then for a voltage regulator to power these off of?

calde315

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Re: Solar Powered System FI8910W to FI9821W

by Blondboy47 » Tue May 28, 2013 1:56 pm

I don't know that router, itself, but it's probably 12V at 1.5 to 2 amps.

Just check the wall wart (adapter). It will list the output right on it.

Also make note of the plug's polarity. Usually, center is positive (there are rare exceptions where center is neg.)

Then, you can go to Radio Shack or some electronics store and see if you can get a 12V to 12V REGULATED adapter. It's the regulation that's important, because a battery can charge up to 15V easily. This COULD cause a problem with the router, unless it has good built-in regulation on power input.

Whatever you do, put an in-line fuse rated same as orig. adapter. DO NOT GO HIGHER. Doing so could blow up the router.

For the cam, I'm not near my cam right now, so I'm not 100% if it's 12V or 5V. I THINK it's 5V. Again, check its adapter. It will list it there as well as the amps.

Let's say it's 5V. Again, you can get, from Radio Shack or an electronics store, a car multi adapter. It's one that plugs into your cigarette lighter and you can switch voltages. Usually, 1.5V, 3V, 4.5V, 9V, 12V.

By the way, if you do see a multi that has 12V AND it has amps at least equal to the router's adapter's amps, you could buy 2 of these. One for the router and the other for the cam.

To make life easier, you could even buy 2 cigarette lighter sockets to use to connect this all up with. This would give you quick connect/disconnect. Just a thought.

Again, put a fuse in-line with the adapter to the camera; keep the amp rating equal to the adapter for the cam.

I might even go 1 step more and put another fuse, coming right off the battery to the Positive lead that powers BOTH adapters, equalling the total amps of both the other fuses, added together.

As for the plugs, just bring the 2 adapters with you when you go to get materials and have the person at the store match up to the same type.

Happy soldering! 

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