SuperHouseTV #3: Power-over-Ethernet for Arduino Home Automation

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I'm using Ethernet extensively in my Arduino home automation system for communication with devices distributed around the house, so being able to also provide power to those devices over the same network cable is a big time saver. Until now I've been using a "DIY" approach to Power-over-Ethernet (PoE) with midspan injectors sending about 10-12V down the wire, but I'm now converting it all over to use Netgear switches with 802.3af (48V) PoE support built in.
This episode covers some of the options for PoE with Arduino, and demonstrates how you can do it both in a cheap DIY method and using commercial PoE switches.

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Опубликовано:

11 июл 2024

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Комментарии : 65

@J2897Tutorials 7 лет назад

"And now, we can turn the lights on and off." - Epic! LOL

@dtechusacom 12 лет назад

I stumbled across this the other night on my iPhone and watched your 3 videos. You have a natural talent for explaining things. I was hoping to see more videos on your microcontroller house project. It looks like some amazing stuff. I hope to get to see the rest of this series unfold.

@geek4d 11 лет назад

Great video about PoE Jonathan! Two things worth mentioning which you left out are that PoE switches can then control power delivery to be able to do power management schemes for saving energy, or even just basic remote power cycle which is very important with such a complex and distributed system. The other cool thing is having backup power for the switches to be able to power the network (and your control system) from a central spot without hundreds of power supplies and power bars.

@mrqrk 11 лет назад

Thank you for these educational clips you've posted on your channel :) Just got myself a arduino kit, and ready for action.

@h4z4rd42 6 лет назад

Absolutely reasonable principles here. Thanks for the idea. Since the new wifi security hysteria is on I myself was going to switch to wired peripherials, and you've just solved the issues heven't even came up yet. Thanks.

@TheTekkel1 9 лет назад

Excellent Video!

@mahuubao 11 лет назад

exellent tutorial it shows Difficulties and Advantages very easy

@jamie405 8 лет назад

Very informative. Thanks

@AlanGarfield 12 лет назад

The cheatsheet stuck above the whiteboard is very clever. :)

@SuperHouseTV 12 лет назад

Thanks, I appreciate it! I hadn't seen that Facebook group before but I'll check it out

@jamie405 8 лет назад

Noticed the light switch used hot melt glue and a lego brick spacer... Nice :)

@TechDoctorTV 5 лет назад

I noticed that too.

@SuperHouseTV 12 лет назад

I know, I didn't notice it until after I'd finished filming and was editing the video! My little visitor.

@Genuigr 11 лет назад

You are my hero. When I build my house (I hope at least I will :D) I want to do this as well!

@saviourgrech3411 10 лет назад

Pretty nice PoE Hack!

@SuperHouseTV 12 лет назад

I messed up! A forum user just pointed out that at 10:30 the 5th example is wrong, I multiple by 50 (for Volts) instead of 10 (for Ohms). Doh! The final number is correct, but the working isn't.

@SuperHouseTV 12 лет назад

Yes, and the short answer is so that there's no need to maintain a concept of "state". A few people have asked this question and it lead to an interesting discussion on the Freetronics forum about messaging systems and architecture, but unfortunately I can't post the URL in a RU-vid comment. If you search for "Freetronics forum superhouse" you'll get there though

@timjohnson5937 10 лет назад

Neat trick using the DS18B20 and its 1-Wire ID as the MAC address. Do you use the sensor outputs in the sketch? Might be an interesting way to have overload protection (or plot in-wall weather trends ;).

@AlanGarfield 12 лет назад

Nice work. A question are you using two buttons on your control pads as one button for on and another for off? Any reason your not using them in a toggle fashion if you are?

@CarlosBrownTechGuy 10 лет назад

17:23 Spider !

@BrazoDj 7 лет назад

Carlos Brown fuck

@SuperHouseTV 12 лет назад

Actually I sacrificed two! They're the perfect dimensions to hold the PCB the correct distance back for the buttons to be flush with the faceplate. It feels wrong using Lego for that purpose though so I keep intending to print some spacers on a Makerbot.

@tropicaljantie 7 лет назад

nice. does the power in the cable affect the data transfer ? how far can a cable run?

@jcforever3224 8 лет назад

how did you make the voltage regulator ? from 40V to the required for the arduino board.

@mikecrim2850 10 лет назад

@ 17:20 - SPIDER!!!! AAAAGGGHHHH!!!

@mikecrim2850 10 лет назад

@ 18:00 it's BAAAACK!!! ;-)

@___xyz___ 6 лет назад

That would be the janitor.

@curtiscbear 11 лет назад

have you had much to do with Clipsal C-Bus and network interfacing at all? any information would be greatly appriciated.

@Devilfish4387 11 лет назад

Just noticed @ 10:38 the formula V= I x R instead of R = 50 v it should be 10 OHM but curiously the result was true ;) but jokes by side great video, very instructive.

@DiyintheGhetto 3 года назад

Hello, Can you show us in code how you setup the ds18b20 as the mac address for the ethernet please?

@paulm5873 10 лет назад

22:05 what is with the lego brick?

@BrazoDj 7 лет назад

Paul m definetly yes

@alaniarisalfistas75 12 лет назад

17:20 there is a spider on the wall...! :P

@anakinseviltwin 12 лет назад

Now, what were to happen if someone were to inadvertently plug the power over ethernet cable into a non PoE device, such as a laptop? Would it be damaged?

@robt.1824 10 лет назад

informative video tool helpful information for beginners, moderate & expert

@bensandham8842 9 лет назад

What happened to the capacitor?

@Bramsky 11 лет назад

where can i get those poe regulators ?

10 лет назад

lmao i see that leggo peice :D

@neuralecho2879 10 лет назад

@ SuperHouseTV Great video. I got a little confused when you did the voltage drop calculation (V=IR) for the 50v system because you wrote 20milliamps x 50volts, instead of 20milliamps x 10ohms, yet you came to the correct 0.2 volt answer.

@TechDoctorTV 5 лет назад

He's cheating :), you can see he looks up, he must have pre-worked the sums up above the board, and he wrote the wrong thing down.

@batoulchaghlil9484 4 года назад

the switch is the router?

@Wuety06 11 лет назад

paused to comment and found it was covered lol

@nazirahmad336 7 лет назад

Hello Dear please help me. I have an Arduino Mega 2560 board and a KRIDA Electronics 1 channel light dimming board with (+5V/Sync/Gate and GND) terminals. I want dimming level Up and Down by using two push buttons and stay any level of dimming point like 25%/40% or 0 to 100%. Lamp is 230 VAC /50 Hz Please help me to write the Arduino code.

@living69nightmare 11 лет назад

i'm lazy so i dont wanna splice the cable i'll just make and design a circuit board... yea thats easier...

@kurtzeman1 7 лет назад

17:18 spider on the wall

@ghanrajsingh6966 7 лет назад

hey buddy why din't u make new updated video plz plz becoz i m a very big fan of u

@wire54321 11 лет назад

Can I have the code for the light switch at 18:34 also the dirgram & part numbers. Please and thank you Wire54321

@undertakerbro 11 лет назад

Why are you using 1 arduino per room?...it has the power to power a few rooms why just 1?

@jollyjojo9912 8 лет назад

Hello I am a College student and I have a Project study about the automation of lightings and air conditioning. I am using Arduino controller, kindly help me on how to do the wiring diagram and connection and also the materials that need to use in my project and the best part is how to program it for functionality test. Hoping for your prompt response because I need to present it to my professor before December 2015. Thanks and God bless

@lotusridder 10 лет назад

0,02 x 50 = 1Volt and not 0.2V

@BGroothedde 10 лет назад

Indeed... You'll get the same voltage drop.

@brianvell 9 лет назад

That 50 is a mistake. The formula is V = IR, so 0.02 x 10 ohm = 0.2V

@blackkissi 9 лет назад

woh the etherTen is $56 and the regulator is $29. Are you actually spending $85 for a light switch, or are you getting a discount?

@jonathanoxer5202 9 лет назад

David Andersson That's still a hell of a lot cheaper than the $200+ for something like a C-Bus light switch! But yes, I do get a discount because I make them. The EtherTen was specifically designed to use in my light switches, and I designed the PoE regulator when I added some PoE-capable Ethernet switches and needed to make the ET compatible with them.

@irun4fundotca 8 лет назад

+Jonathan Oxer I like how you made something plug and play, you should do a small series on alternative solutions for people who cant buy 5-10pcs EtherTen boards and POE regulators to create a system working on a smaller budget using one EtherTen board , I've been working with basic modules found on ebay, its not as neat and tidy but more affordable for a hobbiest

@jamiekosky6580 11 лет назад

yes it is lego

@slabua 12 лет назад

at 8:40, we've lost 90%

@84Roca 10 лет назад

Nice work, however I am sorry to point out the mistake you made, ohms law tells me that I= E/R so 10/10=1Amp.

@RocketRaven 10 лет назад

I would like to ask can any devce with a ethernet port be powered with power over ethernet? like a modem, router, printserver or whatever.

@jeketshah4119 8 лет назад

pls more info me ok

@rajutamang8217 7 лет назад

Be sure to read Home Automation review on my blog before you buy. Go to *peacereviews. com/home-automation-review/* Thanks. Lpd Aub.

@whommee 5 лет назад

lets see just how complicated we can make things to control light switching! Ron White quote,, ""you just can't fix stupid" ! lol This is about the most rediculous mess I ever saw . Senseless !!