 Digikey and Adafruit present This week Harding harding which they have a very handsome logo. I gotta say yellow. This is very nice yellow. Yeah so this company is a company that makes connectors and I Saw this come up on the digikey slash new page and they also tweeted about it I remember you said this to me You're like, what is this new thing called single pair ethernet and I said I have no idea I'm gonna go look into it and we'll talk about it on I and MPI and we'll teach other engineers about it as well So that's what this week's I and MPI is all about Single pair ethernet and the connectors that you need and the cables you need to get started with it So the MPI itself is this very adorable little connector and as you can see in the center there It's got two conductors and it has it basically does ethernet up to one gigasamp. Sorry gigabit per second And it also provides power up to 50 watts over just two conductors Amazing. How's that possible? Well, thanks to single pair ethernet, which has this cute logo, which can you can see the ass? It has the two conductors like the cables and clever very clever Okay, so the ethernet that you and I know is This it's you know a four or eight conductor ethernet connector. It's on computers. It's on Xboxes. It's on routers it's on almost everything IOT devices industry and It's it's invented in the 70s and we've improved on it greatly from 10 base T to 100 base T to now gigabit We've added power over ethernet as well That's it, you know somewhat recent invention so you can now power devices over ethernet. We have some POE devices But it still uses kind of an old Technique for signaling where there's multiple conductors and I think 10 base T has like one pair for transmit one pair for receiving and Although gigabit eventually gets to bi-directional transmission There are going to be a lot of situations where you want to reduce the amount of water This is what you know normally at the top you see 10 base T and then you have one gigabit or one G base T and at the bottom You can see You know it is possible to transmit this data on a single twisted pair Bidirectionally and that means instead of having eight wires We have two wires and this is important because if you're an industry and let's say you're Wiring up a factory or you're wiring up a train or a car You want to minimize the weight you want to minimize the expense of the wiring You can do that with these two conductors and I thought was interesting. You can see on the very left There's like the simple plug-in conductor in the center. There is like a high reliability version So, you know for a lot of industrial uses They want to make sure that the conductor that the conductors don't come loose and they're waterproof And so there are waterproof Ethernet kind of like plug-over adapters But single pair Ethernet was sort of designed from the beginning to be used in higher reliability situations So here's a list of some of the applications that Harding recommends and you can see they're beautiful golden yellow color here, so you know power monitoring switches Transportation like trains and airplanes machinery Industry solar, you know one thing you'll definitely see that's not here is home and office So this you know, you're not gonna be able to replace something that's been around since the 70s for home and office people You know, they don't really mind Ethernet and for high speeds and high lengths Eight conductors will do better for you than two conductors, but there are a lot of situations like you know Let's take for example a train or a plane. It's not physically that large It's only like a couple hundred feet long, but every ounce counts and also there's not that much physical space for so much wiring Let's say you want to put a television in the back of every airplane seat or train seat All that wiring becomes very complicated. So single pair Ethernet's goal is to again simplify that I think also it could be a good alternative for you know Can bus which is another two wire protocol also kind of invented I think in the 70s or 80s You know this Single pair you think you go up to one gig a bit per second. So it's much much faster And again, it does power over those two wires as well Here's another thing. I thought was really cool. So, you know, everybody's had the situation where You're plugging an Ethernet cable and that look plastic thing breaks I mean everyone's been there, right? And you've already like wired up something and you've like stapled the cable in and once that little like plastic bit breaks Like it's impossible to fix So what I thought was really neat is they replaced it with a metal Tang on these connectors. So they've solved like the one annoying problem I've had with Ethernet, which is that, you know, once that little piece breaks, it can become loose and And the cable can come out So Harding has both the connectors as well as cables So you can also pick up from Digikey these beautiful yellow cables. You see yellow is a theme here I'll show the cable on the overhead too. Maybe so Also, the conductor is very small compared to Ethernet. It's a much smaller connector This is a very durable cable, but with only two conductors You can imagine the cable can be a lot thinner and more flexible than Ethernet So this is the cable in the handsome yellow color and this is the part for the pick-and-placeable Connector piece that goes into the PCB. So it comes on tape and reel But it only has, you know, four mechanical contacts and then two extra contacts And this just snaps in and it's a really it's a nice snap. It really clicks in. It's extremely strong And then, you know, oh man, you can remove it By pressing down on the cable assembly So those are the pieces that you'll need If you're the kind of person who's building industrial equipment industrial IoT or your Making things again not for home and office, but for machinery for transportation for industry Maybe even for military I think single-pair Ethernet something you're going to see a lot more of so it's a good time to become familiar with it also they've got a great superhero character called twister and They've got a whole set of these for all the different connectors that Harding makes This time they went with purple not yellow for the character and his head is a single-pair Ethernet connector so very Creative available and did you key? In the chat a lot of people are like hey, I've been hearing about this and and now I now it's on INFPI So I'm going to take a look take a look and if you go to harding.com They have a whole information section that I totally You know Wikipedia to learn all about all the specifications for single-pair Ethernet So there's there's a consortium of companies Harding is one of like the original consortium members But there's quite a few of them all of them are very well known connector and an industry manufacturer so Again, you're not going to see this for home and office But if you're manufacturing stuff, that's automation industry single-pair Ethernet It's a good time to get acquainted with it because you're in next revision of a product You're probably going to be including it Yeah, and they had like a minute two minute video Um about their technology product more so we're going to play that Take it away Single-pair Ethernet is a new transmission standard for industrial automation via just one pair of conductors We provide answers to the most pressing questions and point out our future SBE solutions for IIoT infrastructure A whole series of new standards accompanies the development of SBE But which parts of technology do they refer to? First of all, this concerns norm IEC 63171-6 in which the SBE connector phase is defined for industrial applications We also cooperate actively in standardization committees for cabling standards at ISO IEC and TIA and indeed for transmission standards at IEEE 802.3 Transmission via just one pair of conductors requires new interfaces cables and other components in devices The hearting norm proposal was the first proposal for a standardized SBE interface comprising a complete range of various variants from IP20 to IP67 in M8 and M12 structural shapes In this way all versions are based on one standardized connector phase and comply with all specifications demanded by the market Those were the reasons why our proposal for a standardized connector phase was accepted by all international norm committees such as ISO, IEC, TIA and IEEE IEC 63171-6 will finally be published this year This sets the standard and uh check it out on digikey short URL is digikey.com slash short slash z rv T71 or you can just look at the product ID. We'll also have the blog posted more and that is this week's IonMPI