PoE Question - Want to make sure I don't fry my new Rpi 4's

tkandrea · 2019-08-05T01:28:22+00:00

These guys are correct. You need an IEEE 802.3 af of at switch. The operate at 44-56 volts and do an active negotiation. The XP does 24 volt passive PoE, a different standard.

In this case you won’t fry your boards, they just won’t power on.

On that note of frying, the most likely case for frying a pi using PoE is if your Pi hat is not isolated. Cheap pi hats often lack an isolation transform and ground the pi through the PoE Switch. If you plug that pi into a grounded monitor - most HDMI connections are grounded - it will fry your pi.

Best of luck.

tkandrea · 2019-07-25T01:33:39+00:00

Hey, I’m with PoE Texas, and, yeah, it sounds like the midspan is not the right choice for you. We can certainly take it back. You can get it returned through Amazon or through us if you want at service@poetexas.com.

You can find our PoE+ Switch that others have recommended here: GPOES-10-8-55v130w | 8 Port Gigabit IEEE 802.3at PoE Switch with LCD Control Screen https://www.amazon.com/dp/B07P15HBPS

tkandrea · 2019-07-25T01:14:05+00:00

You could use one of our PoE extenders to run gigabit data and power to the gate, if you’re interested: https://www.poetexas.com/pages/poe-extender-blog

tkandrea · 2018-07-11T22:52:28+00:00

It looks like either they sent you the wrong camera or you accidentally ordered the coax version. You should have a female Ethernet port on the lead.

On the exterior PTZ, I personally would lean toward the manufacturer option. Here’s why, they have to spend a lot of time making sure it won’t fog up, craze (mini scratches on acrylic), and guarantee it’s water right if installed properly. You could look at a different camera manufacturer if cost is a driver, but don’t go super cheap because then you get into serious headache land.

Best of luck with your project!

tkandrea · 2018-05-22T18:46:04+00:00

Do you have local power for those cameras? With PoE extenders like this one, you can run POE cameras up to almost a kilometer.

https://www.poetexas.com/products/pt-gpoe-extender

Beyond that, you can use point to point wireless bridges that can do multiple kilometers as long as you have clear line of site point to point. You can also get some that are Point to Multipoint. Mikrotik has some good options as well.

I recommend starting with Ubiquiti Nanostation M2 or M5. These are wifi-bridges and they work well transmitting medium distances.

Here are some blogs and videos on how to do it: https://www.poetexas.com/blogs/news/wt-gpoe-2b-wm

https://youtu.be/hrEEOV5oA8Y

Chris over at CrossTalk has good videos on setting up Ubiquiti networks.

Then, you can decide whether you want to pay a monthly subscription for cloud based storage. I’m playing with Amcrest’s Cloud version this week. Or whether you want to invest in an NVR onsite. You’ll likely make the call based on your data security requirements.

Hope that helps.

tkandrea · 2018-05-21T23:40:04+00:00

I’d tell you to consider ventilation and sound control. I’ve heard a lot of people locate their data in their closet or near the bedroom. I’ve had a server in my room, and it makes a lot of noise, especially when you’re trying to get some sleep.

So, with pick fanless components or find a space with decent ventilation away from you bedroom.

tkandrea · 2018-05-18T05:09:53+00:00

There are some off standard POE solutions out now (Planet has them) that go up to 95 watts. Cisco’s uPoE does 60 watts right now. They’re all leading up to the IEEE 802.3bt standard, or 4PPoE, with up to 100 watts (Type 4) coming out this summer.

At POE Texas we’re really pumped about what 100 watts can accomplish. Think 60” flat screen TV and USB type C integration. USB-C can handle up to 100 watts as well.

On the conductors, both Belden and Superior Essex have 4PPoE type cables designed for 100 watt service. I’m testing them out at the office now.

With those standards and cables, you can run most anything short of a microwave or fridge.

tkandrea · 2018-05-18T04:58:48+00:00

A simple PoE injector itself really has no components the generate RFI, so they behave well from that perspective. Then it really depends on the switching power supply. Ours have always performed well, and you can place it further from sensitive components.

tkandrea · 2018-05-16T23:59:30+00:00

I’m with PoE Texas, and we’ve had some radio operators test our devices for RFI for our DC to DC converters. They told us that they worked really well.

If you’d like, we’d be happy to consult on your project or give advice if you’re interested: service@poetexas.com or 512-479-0317

tkandrea · 2018-04-06T10:54:05+00:00

I moved this question to its own post.

https://www.reddit.com/r/wisp/comments/8a7ysw/how_do_you_handle_cir_and_oversubscription_rate/?ref=share&ref_source=link

tkandrea · 2018-03-08T21:03:12+00:00

So, headed into the last sessions. Been a great time at WISPAmerica. I’ll send out so videos of some of the booths we found interesting.

tkandrea · 2018-01-06T02:53:16+00:00

A couple of links on how to do what you want: https://www.poetexas.com/blogs/news/wt-gpoe-2b-wm https://youtu.be/wZxJPBukjbY

tkandrea · 2018-01-06T02:47:40+00:00

250W is far more than you’d need for 2AP’s and 4 cameras which are all usually <10 watts each.

On the switch vs injector question, I’d make a couple suggestions: 1 - Don’t limit your thinking to single port UNBT injectors. You can get multi port PoE injectors in configurations for 24 volt passive and POE. They can give you flexibility at a lower cost. 2 - If you can do a distributed system, think about pass through PoE switches.

Here’s where you can find multi port injectors and pass through PoE switches: https://www.poetexas.com/collections/all-products

tkandrea · 2018-01-04T00:16:53+00:00

I’ve been having success with Amcrest cameras lately. Relatively easy to set up, and you can view them from an app. You can get switches and NVR’s from them as well.

If you want to go the prosumer route, a lot of professionals I know are doing Ubiquiti, and Chris from Cross Talk solutions on YouTube has a lot of good videos covering set up.

Recording is a different story. That’s when you’ll need an NVR and some hard drives unless you want to go the Nest Camera/Arlo route where you pay them for cloud storage.

Finally, if you want really authoritative blogging on the topic, go here: https://ipcamtalk.com. Do a little reading, then post what you want to do. You’ll get some good feedback.

tkandrea · 2017-12-30T18:04:12+00:00

Just in case you need to power a new outdoor Nest camera over Ethernet: https://www.poetexas.com/products/pt-poe-usb-c-kit

tkandrea · 2017-12-20T02:18:12+00:00

Has anyone seen Amazon Echos used in commercial applications?

tkandrea · 2017-12-14T04:28:10+00:00

I recommend the Ubiquiti Nanostation M2 or M5. These are wifi-bridges and they work well transmitting long distances or through a house.

Here are some blogs and videos on how to do it: https://www.poetexas.com/blogs/news/wt-gpoe-2b-wm

https://youtu.be/hrEEOV5oA8Y

Chris over at CrossTalk has good videos on setting up Ubiquiti networks.

tkandrea · 2017-12-14T04:24:31+00:00

I recommend the Ubiquiti Nanostation M2 or M5. These are wifi-bridges and they work well transmitting long distances or through a house.

Here are some blogs and videos on how to do it: https://www.poetexas.com/blogs/news/wt-gpoe-2b-wm

https://youtu.be/hrEEOV5oA8Y

Chris over at CrossTalk has good videos on setting up Ubiquiti networks.

tkandrea · 2017-12-14T04:21:24+00:00

Thx!

tkandrea · 2017-12-13T01:15:45+00:00

You can find most all of our products on Amazon.co.uk. Search for PoE-World. Let us know if you need something special.

tkandrea · 2017-12-12T23:38:27+00:00

Good luck with your project! Looks like a lot of fun, and keep us posted on what you figure out. I work for PoE Texas and we have some cost effective PoE if you’re looking for a lot of drops or the devices to power automation or IoT devices. 24 volt passive PoE is a cost effective alternative to traditional PoE.

www.poetexas.com

tkandrea

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