I don't think the sticker is about 48VDC as it reads ESD, which stands for Electro-static Discharge. It's more like a warning that don't touch the board before you discharge yourself or you risk damaging the ESD sensitive components.
The Olimex ESP32-PoE has an annoying issue: it constantly draws 10mA from the PoE (500mW!) and gets really hot. The reason is that this is the minimum required current to keep the PoE active (device detection). However it doesn't need to draw this all the time, the PoE standard allows for short pulses of current draw to keep the PoE active. A workaround is to desolder one resistor, but then you cant use sleep mode without the PoE being shut off by your switch due to the small power draw. Also it has micro-USB. I cannot wait for everything to finally transition to USB-C.
@@dv5809 This Olimex board design is already a few years old and to change to USB-C you need a PCB board redesign. I can imagine that's not worth the effort as they probably (my assumption, or should I say "wish") will make a new board with one of those SPI Ethernet chips like the W5500 and using some ESP32-S3 or C3. Those SPI Ethernet chips take a lot less pins from the ESP.
I am using a ESP32 Module with a Ethernet Wing (W5500). Programming is not to difficult (standard ESP32 fashion) and for POE one can use a POE splitter. But an all in one module sounds promising.
I have been using an Olimex ESP32 POE board for my OpenMQTTGateway to connect to Xiaomi BLE thermometers for over 2 years and don`t have any problems. I like to use wired connections for bridges like that and the POE makes it more convenient since I already use POE switches for cameras.
10:10 Wifi/Bluetooth cannot be used together with the ADC2 pins. I think GPIO14 is your problem. Unless you have already tried without the temperature sensor, in that case I don't know.
The A standard was only used in office phones originally and when they developed for ethernet they choose B so the two types of equipment didn't get confused if hooked up to wrong system and/or cause possible damage. Many newer office phone system use POE instead now to allow simpler wiring that can used for either.
I've been running ethernet cabling here in Finland for 25 years and everything has been done with an A-scheme. Except one large customer that wanted everything to be B for several years, until they gave up. Patch cables seem to always be with B-coloring thought, which screws up everything. Rj45 is used so much with other things than ethernet and we electricians need to cut ready made patch cables to connect other end to screw terminals etc. Basically every time a new guy connects such a device, we have to go back and change orange and green pairs with each other. I'm glad that the gigabit crossover isn't really a thing in real world, so blue and brown are mostly right at the first go.
@@villehietala9677 that's interesting since I'm pretty sure in the standards it says that B should be used but it's been years since I've read any of them or made a cable for that matter😉. Just did a quick search and found that the TIA/EIA 568-A was standardized in 1995 but replaced in 2002 with B. The only time A would be used is in a crossover cable as that reverses the pairs. Up thru 100BASE-TX only 2 pair are used one for TX and one for RX but starting with 1000BASE-T all four pair are used. The switch to MDI-X was added to hardware so crossover cables were no longer needed but also had the benefit that were various national standards messed up by using A instead of B they didn't need to make special equipment just for those countries😉.
I would say that CAt 5 and 5e would have shielding sometimes as you could get STP(Shielded) and FTP(Foiled) cables. And for some applications I would not count out the good old RS485, it is very nice to connect alot of low bandwith control equipment with more modern trancievers that can have 64-250 nodes per segment. And a new(2019) standard for this is T1L that that runs Ethernet over a single twisted pair in a bus fashion at 10 Mbit.
I agree, T1L would be a good thing for most of our applications. However, the old Ethernet cables are more versatile, particularly if you wire your home.
I've been using an Olimex ESP32-POE-ISO for almost a year now. It's powered by Power over Ethernet and I use it in my garden for grabbing sensor data from several bluetooth sensors and send it to Home Assistant by using the BT proxy function in Esphome. It works flawlessly and this way I didn't have to make wifi avalable in my garden. I first tried it by placing a regular ESP32 inside next to a door or behind a window but unfortunately this was not reliable enough and some sensors were even completely out of reach. (Because of thick walls and metallic coatings in my windows) With the ESP32-POE-ISO my entire is easily covered for the purpose.
Cat7 recommendation is a safe one - if you are about to pull new cables though your house, to be used for various devices (including PC-s, newer TV-s etc). However if you are pulling cables for ESP32-s than CAT5.e really is more than enough (because it's good for up to 1 Gbps)... and is a much cheaper option too. Also easier to crimp. Thanks for a review !
I want to ask a question to the audience of this great channel! In this, and not only this, video there is evidence that swiss people do not only exist of swiss cheese and clockwork precision...
T568B was designed to handle CAT3 / ATT Phone wiring (the RJ11 plugs fit into an RJ45) so for the USA its the standard cable. Cat-5E is generally rated the same as Cat6 as well and can generally carry 10Gbe no problem.
Arduino IDE ... #ifndef ARDUINO_WIZNET_5500_EVB_PICO #error This file is for Board:"WIZNET_5500_EVB_PICO" only #endif I have some examples if you want?
I recently deployed an ESP32-POE (Olimex) with WLED, 4 output channels for LEDS, and a I2S ADC for line level audio input. My only struggle was finding enough 'raw' GPIO, and I needed to desolder a few 0201 SMT resistors from the I2C lines that I didn't need. Would be nice if it was a solder jumper or something easier to 'clear'.
Thank you. I will look at the boards but probably hold off. I have some stuff that is connected with wifi (it isn't perfect, wifi drops out sometimes) today, and i guess that works well enough for now. I ended up with some 2.0mm header cables a while ago. 2.5mm is much easier.
I recommend cat 6a over cat 7 for three reasons: 1. Cable runs can be longer (6a is 100 m max rated, cat 7 is 30 m max rated) which could become a problem if you're not careful with the length of your cable runs. 2. cat 7 requires shielding, which can be hard to deal with without specialized tools, whereas cat 6a only requires foil which can be cut by anything, realistically. It can also come shielded if your area has high emf interference. 3. cat 6a is cheaper. Why spend more for the same network speed Edit: Oh, and 4. cat 7 has a new standard that isn't the RJ-45.
Just make sure to not use "shielded" Ethernet cables. Most of these boards are not isolated from their Ethernet shield and thus there is a direct connection to the chassis of the switch. Also when using PoE, keep in mind not all use isolated PoE, so when you connect the board to a PoE switch and also to the PC for debugging, you may end up frying the board, your PC or your PoE switch.
@@ligius3 Yep, but many ESP boards with Ethernet don't and thus you have a direct connection with the chassis of the switch/router which may be connected to some other PC which isn't connected to a power outlet with earth pin and thus if you use the more expensive shielded Ethernet cables, you may have quite a high voltage offset on the GND pin of your ESP board. If you then connect this to your PC (e.g. via USB to serial chip as some Ethernet boards also don't have USB) or logic analyser, you can for sure fry electronics. So that's why I strongly advice against using shielded Ethernet cables to connect your ESP boards. Some PoE Ethernet boards do not have isolation on the PoE circuit. For example Olimex has boards with and without isolation on the PoE circuit. This is clearly labelled in the name with "ISO".
Yes, just saw now the schematic and description for the Olimex board and it does not have a tranformer. Some ETH chips I think include a transformer inside but not the specific Microchip one. But I agree that the shield might be at a different potential, but compared to what, to ground? It still needs a path, so two connections, so not sure how the current would flow. The PoE injector probably has an isolated supply. Ethernet doesn't have a ground pin, so not sure where the voltage will flow from the shield.
@@ligius3 I think you're mixing up a few things here... In the RJ45 socket, there are some transformer coils for the signal wires (well in nearly all but the really cheap ones) so the signals are almost allways isolated or at least on the other side at your switch. However for PoE, there is some center pin for each pair which carry the PoE voltages. The PoE circuit to tun this 48 - 57V into some more managable lower voltage can also be isolated. For example the Olimex PoE-ISO board has such an isolation for the PoE. N.B. when powering your board via PoE, the data lines should absolutely be isolated or else you will fry your Ethernet chip. But those are often just isolated in the RJ45 socket. Now the shield of the RJ45 socket. This should only be connected to the GND of the board via some 1M resistor and maybe some capacitor too. However on quite a few ESP32 Ethernet boards, this shield (thus the metal frame of the RJ45 socket) is directly connected to GND of the ESP board. So if you connect this shield with a shielded network cable (thus metal shield wrapped around the RJ45 connector), then you will make a direct connection to the chassis of the switch. And if this switch is connected via a shielded cable to another PC which isn't properly connected to the Earth pin, you will introduce a voltage offset of +/- 110 - 120 V from this other PC. This is like when you get shocked when touching a PC case. So you may introduce quite a voltage level offset between your ESP board and whatever equipment you have at your desk. Remember "this other PC" can be located in another room, connected to different phase, etc. This is why I always advice not to use shielded Ethernet cables when connecting ESP boards. At least not when you also need to connect other stuff to it, like some debugging tool, a PC or sensors which can be touched.
@4:06 the T-568A standard is nowadays almost obsolete and AFAIK is only used in some old corporate and/or government buildings for it's compatibility with landline telephony. Nowadays I think every ethernet cable sold is crimped according to the T-568B. Fun fact: some switches will detect and resolve (to some extent) crimping errors (I know Unifi does)
Yepp, it's in the description. Usual summer stuff front Andreas, explained a year or two ago: during summer views are lower, and he is on a holiday too, so mostly recycled videos.
The aspect I am most curious about is power consumption. I have run cat5 to each light switch for future smart home augmentation (I want the relays to be wired in a cross-over configuration so all the lights work as normal even if the relays fail to switch). I am currently deciding on what to put in the switch boxes (in theory I could just use the 8 cat5 wires to the relay and current sensing and then do all the smart stuff at the hub). Or I could use RS485 and 240vac-3.3vdc transformers in the wall switch boxes. Or POE ESP32 in each wall switch box. Ultimately I want the system to use as little power as possible. What is the best option to achive this? 1. a transformer in each box 2. 48vdc POE 3. direct remote relay actuation (48v relay?) (how could I do remote current sensing (for switch state sensing), over cat5 conductors)
@@AndreasSpiess I do need lots of them. The aim is to keep household parasitic power draw to a minimum from the outset. (I turn stuff off at the wall at night to reduce standby waste😊) I don't want to be redoing it all once in 10 years once there's 100s of devices. The problem is efficiently getting
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Ethernet power usage is tipically proportional to the number of pairs used. For some devices where I can't disable gigabit (or it is complex) I just make sure to use cables with only 2 pairs. In one device I lowered temperature by 5 kelvin. For today standards even 2 pairs (100Mb/s) uses a lot of energy. Single pair ethernet (SPE) is coming out now, and will reduce power consumption, and also allow for PoE and Multidrop. I think soon (in geology scale) SPE and Fiber will cover all uses.
Shielded and/or foiled UTP cable is more important than category in this case. I would not use crimped cables, no matter the application. Use keystone modules instead and always connect the shielding to the ground or you just got yourself a big antenna :)
After I recently got rid of my old Poe switch and transitioned to mikrotik, I'm currently transitioning a lot of stuff to passive poe. Benefit is that it runs from a 24V lifepo battery with a lot less conversion steps. At the moment my Nas is still on a conventional UPS but will also transition soon. Fun fact: a lot of hardware stores here already transitioned to cat 8 for shielded cables. Considering their usual markup, it's not even that expensive. I think the difference from cat 7 to 8 is mostly the plug but I'm not entirely sure. Must be small enough that it's not worth having both in stock. Wonder when we'll get an esp that supports fiber optics ;)
All my network stuff is from Mikrotik, too. But I do not particularly like the passive PoE because it is not widely used. I use if for their Access Points, though.
@@AndreasSpiess some of their models also support active poe. (Switches as well as the APs) Both clearly have some benefits, I'm happy with them. Recently discovered the power behind the 28° antennas in the sxtsq AC. Impressive for that price point. Also cheaply acquired one 60ghz ap, hope a second one also cheaply pops up soon. Your video showed me I need to test it for my stuff too.
I use TTGO poe board with esphome without any problems. Truly eth circuitry consumes a lot of important pins but on the other hand I have a way more stable BLE stack as it does not have to share radio with WiFi. Using the same sketch with BLE over WiFi lead to frequent reboots via watchdog and generally poor stability. I use it to monitor my offgrid (inverter via uart + victron charge controller via blue and jk-bms also via BLE). It sends enormous amount of telemetry and over eth it finally got stable. Plus I can power it from offgrid :)
@@AndreasSpiess Would such a board be of interest if I designed one? How do you estimate its chances? Consider the following: The board connects to a pair of wires (Klingeldraht).. It could either connect to one switch port or connect to a bus with CSMA/CD protocol. So it would be a fancy alternative to a field bus solution.
@@ghlscitel6714 I do not know how big the market is. But as always, it is hard to find customers, even if they have this particular problem. Many people these days go the "standard" CATx way for their homes. But you can try and sell it via Tindie or so.
I'd like to try an ESP32 board with Ethernet & POE capability! I have a specific application where i need an RFID reader that is connected via an Ethernet cable with POE. Currently, I'm planning to use a different chip, as i have a board from Sparkfun that already integrates the RFID chip with a controller, and has Ethernet capability. But my home security system will use RP2040 chips for the sensors, and ESP32 for the console. Plus, i use esp32 for so many other things, there are times when Ethernet would be useful and preferred. But i guess cost of the boards should be considered as well. And whether it not there are enough free pins for the application! (Why do they use 8 i/o pins if they're already using i2c?) Thanks for the update! 👌👍🤪
The ESD sticker is a warning applicable to the entire PCB; there is nothing inherently more ESD-vulnerable about POE circuitry than anything else on the PCB. In ESPhome, Ethernet and Bluetooth works perfectly well simultaneously. I have one of those Olimex PoE ESP32 boards running just the basic ESPhome platform with Bluetooth Proxy enabled, nothing else, works perfectly. Connected to a high gain 2.4GHz antenna I can open my garage & gate with a Shelly Bluetooth Button from down the road (so long as Home Assistant also sees me as within range).
I did some testing on Ethernet for ESP32. I created like 6 or 7 versions of my own PCB untill i found my solution. There are many problems like the clock from the crystal is on GPIO0. So you have a 50:50 change to hit the boot mode while resetting. A solution for this is to power the crystal by GPIO (which is in standard layout) and delay it afew seconds after boot. The LAN8720 is nice, cheap but old. A newer version is the W5500 which using SPI. So you only need 4 Pins of the ESP32. But the current ESP IDF on Arduino IDE does some problems with some librarys. My solution is to expand the pinout with an mcp23017 which gives me 16 IOs.
5:13 whoa, quite surprising - I still use only 5e as it was much cheaper, almost no of my devices were 1Gbps and also I recall cat6 had shielding that required a specific device? But that last part I would have to recheck.
I had a project I wanted to do a few years ago with a wired ethernet ESP32, and none existed, or they weren't really common. Ended up going with completely different hardware that was beaglebone black based, which also has wired ethernet.
FYI, any cable labelled Cat7 does not follow IEEE and EIA specs and is not officially recognized as 'category 7'. It departs from the industry standard, has no real definition, and should not be used in any production environment because manufacturers can literally relabel Cat5 as Cat7 if they want, there are no rules. You almost certainly don't need anything more than Cat6 for any application, but if you feel you do, go with Cat8.
If you are going to assemble your own cables, I highly recommend investing in the "Crescent Wiss 5" Electrician Scissors - 175E " ~$16 USD as Amazon. Not only will the scissors cut the wires nicely and cleanly at 90 degrees, each blade has a scalloped ridge where you can pull the wires over to cause the curly-qued wire to straighten out and be stiff --- that makes it so much easier to feed the wires into the plastic housings which takes practices and can be very frustrating unless you have clean cuts all at the same length and stiff. Secondly, if you use outdoor rated cable (for PoE surveillance cameras), beware and you may be best served purchasing a wife assembly kit which includes the plastic housings specified for that particular type of cable. Lastly, I would stick with named brand connectors.
In industrial applications, the Ethernet cable uses only 2 pairs, and the cables are only 4 wires with a shield. I wonder if a POE circuit can be designed for the ESP32 Dev boards that also only use 4 wires? to allow more IO.
gigabit ethernet uses all 4 pairs, and PoE works fine on gig ethernet (where some of the pairs are used for both power and data simultaneously). You therefore could do the same with 10/100 that only uses 2 pairs, and also use those pairs for power as well, but you'd have to roll your own boards, as using pins 1-2 and 3-6 (the two pairs used for 10/100 ethernet) for PoE is non-standard
SPE with PODL seems like a very good choice for IP to the edge, especially T1L which can reach 1000 meters with a single pair of wires. At only 10Mbps but that is often enough for data collection and remote actuation.
Funny that you showed some CAT-7 RJ45 Plugs. According to the standard, there are no Cat7 RJ45 Plugs. You always downgrade your Cat 7 Wiring to Cat 6a by using RJ45 Plugs.
I'm starting a new ESP32 WROVER project and I have to cross off all the pins I can't use because they're dedicated to something. Leaves me only about 12 GPIO pins...
I'm using the Lilygo board for one of my projects. It's kind of not will thought out. The exposed pins, as you said, are a strange collection and it does not expose 5V, which would have been nice. Furthermore, I'm experiencing periodic boot problems. No idea why. That's the most annoying problem. If anybody knows how to solve that, let me know.
@@AndreasSpiess I guess I wasn't clear in what I meant. It's not that the board reboots by itself. My problem is that it doesn't start properly after a reboot. It somehow seems to have problems to boot from flash sometimes. Most of the time removing power helps, but not all the time. This makes every OTA update a gamble...
Another tip regarding the ethernet cables: if you're installing them in your walls or somehow mounting them permanently: use solid wires. Otherwise use stranded wires.
Unfortunately in the Australian state of NSW, it's illegal to install any cabling that transfers data or camera feeds unless you are a licenced electrician, So it's WiFi for us
Is there a good reasoning for it or is it just the result of lobbying? Wouldn't that mean you'd need a electrician to install individually addressable LEDs on your porch? Sounds stupid
What about using RJ-45 for power and/or HDMI? I can only imagine what would happen if you just install the cables without connectors, so that they exist but are not functional and after building inspection(?) you just connect them?
I thought Finland is a nanny state, but holy crap that is insane, my tinfoil is itching, do they want the ability to jam civil communications? I've installed my first RJ-45 networks when i was 15yr old and had to learn those old skool "crossed" connection types and all....
How do they get Ethernet on a newer ESP32 or is this only the base version? Well the SPI to ethernet stuff is sadly only fast ethernet. But they only use SPI MISO/MOSI Are there better chips for the newer ESP's with more speed well yes I know it's crazy how much it can already transfer. Hmm aren't there High Rose, Telegärtner and Western Connectors? Well I'm not to sure about that plastic flap stuff, I use a Telegärtner Ali knock off.
I cannot answer your questions with one exceptions: Most (or all) new ESP32s do not natively support Ethernet anymore. I use standard ESP32s for that purpose.
@@AndreasSpiess Ahh so no adapters in your case. I wanted to use the S3 version as it has more pins + better BT/PSRAM support. And then it's possible to wait to the ESP32-P4 for new Ethernet Applications..
i don't think you can compare 150mbit wifi vs 100mbit cable as 150mbit wifi is single duplex and has overhead. Even on perfect conditions it would be max of 100mbit, whichi I would not think you could ever achieve on esp. Ethernet is full duplex making the total bandwith 200mbit. So it's not a bit better, it's alot better.
I suspect that BL will not work as it is using the same chip as wireless which is not used. Try to tall back to wifi and see what happens. I'd like to have the option to use wifi if there is no connected ethernet.
@@AndreasSpiess oh, that was not what I meant, but if the same chip is used for both Wifi and BLE, then maybe if you do not enable Wifi then BLE might not get activated. Just a thought. As for stability, I have two esp32 modules running the ble proxy (esphome) and they were working perfectly, then I upgraded esphome and I now see drop outs with some of my ble modules. I suspect that the problems I see is down to coding and not hardware - but you touch an interesting subject.
Is there any useful application for ESP32 that actually need ethernet ? BTW i have many RPI that i control it with RS232 to old pc that convert it to ETH (with IP2COM sw) , slow (115200) but cheep and do the job fine.
I use a LoRa iGate connected to Ethernet, for example. And I know that people with modern cabling in their homes prefer ethernet over WiFi for their sensors.
Hi sir, currently I am working with esp32 and zmpt101b sensor module. zmpt101b working fine but when I try to connect wifi (wifi.began) then zmpt101b showing zero values. Please help me
Cat6a isn't really a "compromise", the way you think it is. There is no 8p8c Cat7 ethernet standard. Using 8p8c with an 8p8c connector is out of spec. The reason you see plenty of cat7 being sold for ethernet use, is simply because the seller can make more money by upselling people to cables with a higher number on them. If you need 10Gbit, use Cat6a. If you need shielding, use shielded Cat6a with grounded jacks. Anyone trying to sell you Cat7 for ethernet is cheating you.
@@AndreasSpiess I forgot to provide a reference. Rather than linking to the IEC standard itself, here is a link to the Wikipedia page explaining that section. If you would like to read the actual standards doc they provide a link. en.wikipedia.org/wiki/ISO/IEC_11801#Class_F
i prefer Ethernet because if you budling iot on some critical infrastructure 9/10 is going to have good connection and stable wifi 3g and 4g is really susceptible for weather if is rain wifi is useless and cant be use in critical infrastructure and for iot devices
Hallo Andreas, der `CRS112-8G-4S-IN` ist mittlerweile wohl "discontinued". Wenn Du Dir heute einen neuen Router kaufen würdest, welches Modell würdest Du nehmen (OPNsense bzw. notfalls pfsense)?
Do no purchase something with a sticker for protecting it medium voltage railing, especially when that board doesn't even have a UART serial chip on built in.
I hate all those poe boards that won't provide Any external power to drive LEDs or actuators.... A 12V 1A could do a lot of useful things :/? And cheap poe breakout boards do that - couldn't they use that Ic as well?
I would suggest to not crimp your own cables, it is a major source of problems and instability. I have all the tools and haven't crimped one for about 20 years, patch cables are cheap. Instead, get some installation-type ethernet cable and the appropriate keystone jacks, those can be fitted without any crimping tool.
I wish people would get off using Arduino when it comes to the ESP32 and all its variants. You all are seriously limiting yourself compared to using ESP-IDF
I fail to see the point of an esp on such a board. Since blueooth does not work, i suspect wifi will also not work; and if wifi does work then this is a potential security risk. So either way its kind of pointless. I would rather see a teensy if you need speed or even a atmega328p if speed is not an issue, rather than the esp32. This is like buying a short wave base station radio for the sole purpose of using it as a stiff writing surface to write someone a letter.
First of all ESP32 is extremely cheap, and second of all, it comes with an inbuilt Network Stack. That will cost any board like an atmega or stm32 some performance.
I don't think the sticker is about 48VDC as it reads ESD, which stands for Electro-static Discharge. It's more like a warning that don't touch the board before you discharge yourself or you risk damaging the ESD sensitive components.
Yeah, on the documentation they talk about some very ESD sensitive components.
Thank you for clarification!
The Olimex ESP32-PoE has an annoying issue: it constantly draws 10mA from the PoE (500mW!) and gets really hot.
The reason is that this is the minimum required current to keep the PoE active (device detection). However it doesn't need to draw this all the time, the PoE standard allows for short pulses of current draw to keep the PoE active.
A workaround is to desolder one resistor, but then you cant use sleep mode without the PoE being shut off by your switch due to the small power draw.
Also it has micro-USB. I cannot wait for everything to finally transition to USB-C.
If you keep buying micro-USB crap they will never switch, because micro-USB connector is a few cents cheaper.
@@dv5809 This Olimex board design is already a few years old and to change to USB-C you need a PCB board redesign. I can imagine that's not worth the effort as they probably (my assumption, or should I say "wish") will make a new board with one of those SPI Ethernet chips like the W5500 and using some ESP32-S3 or C3.
Those SPI Ethernet chips take a lot less pins from the ESP.
Greetings from a former DEC Switzerland employee :-)
Greetings back!
I recommend a look at the Silicognition WESP32 - very well engineered product
Thank you for the tip!
I am using a ESP32 Module with a Ethernet Wing (W5500). Programming is not to difficult (standard ESP32 fashion) and for POE one can use a POE splitter. But an all in one module sounds promising.
Do you use lwip integration for the kernel (raw packet mode) or the tcp stack (hardware offloading) of the module?
I have been using an Olimex ESP32 POE board for my OpenMQTTGateway to connect to Xiaomi BLE thermometers for over 2 years and don`t have any problems. I like to use wired connections for bridges like that and the POE makes it more convenient since I already use POE switches for cameras.
Thank you for sharing your experience!
10:10 Wifi/Bluetooth cannot be used together with the ADC2 pins. I think GPIO14 is your problem. Unless you have already tried without the temperature sensor, in that case I don't know.
Good point! As said: I did not investigate further.
I've always used the T-568B standard here in the US.
The A standard was only used in office phones originally and when they developed for ethernet they choose B so the two types of equipment didn't get confused if hooked up to wrong system and/or cause possible damage. Many newer office phone system use POE instead now to allow simpler wiring that can used for either.
I've been running ethernet cabling here in Finland for 25 years and everything has been done with an A-scheme. Except one large customer that wanted everything to be B for several years, until they gave up.
Patch cables seem to always be with B-coloring thought, which screws up everything. Rj45 is used so much with other things than ethernet and we electricians need to cut ready made patch cables to connect other end to screw terminals etc. Basically every time a new guy connects such a device, we have to go back and change orange and green pairs with each other.
I'm glad that the gigabit crossover isn't really a thing in real world, so blue and brown are mostly right at the first go.
@@villehietala9677 that's interesting since I'm pretty sure in the standards it says that B should be used but it's been years since I've read any of them or made a cable for that matter😉. Just did a quick search and found that the TIA/EIA 568-A was standardized in 1995 but replaced in 2002 with B. The only time A would be used is in a crossover cable as that reverses the pairs. Up thru 100BASE-TX only 2 pair are used one for TX and one for RX but starting with 1000BASE-T all four pair are used. The switch to MDI-X was added to hardware so crossover cables were no longer needed but also had the benefit that were various national standards messed up by using A instead of B they didn't need to make special equipment just for those countries😉.
I would say that CAt 5 and 5e would have shielding sometimes as you could get STP(Shielded) and FTP(Foiled) cables.
And for some applications I would not count out the good old RS485, it is very nice to connect alot of low bandwith control equipment with more modern trancievers that can have 64-250 nodes per segment.
And a new(2019) standard for this is T1L that that runs Ethernet over a single twisted pair in a bus fashion at 10 Mbit.
I agree, T1L would be a good thing for most of our applications. However, the old Ethernet cables are more versatile, particularly if you wire your home.
Cat 5e supports 2.5Gb and Cat 6 support 5Gb speed according new standard 802.3bz-2016
Thanks for clarification!
I've been using an Olimex ESP32-POE-ISO for almost a year now. It's powered by Power over Ethernet and I use it in my garden for grabbing sensor data from several bluetooth sensors and send it to Home Assistant by using the BT proxy function in Esphome. It works flawlessly and this way I didn't have to make wifi avalable in my garden.
I first tried it by placing a regular ESP32 inside next to a door or behind a window but unfortunately this was not reliable enough and some sensors were even completely out of reach. (Because of thick walls and metallic coatings in my windows) With the ESP32-POE-ISO my entire is easily covered for the purpose.
Indeed a very good idea! I moire and more switch to Zigbee sensors for a similar reason...
You are my favorite andreas spiess channel
:-)) Thanks.
Great video, wired Ethernet on an ESP32 is a great idea and POE makes this the perfect solution.
Indeed!
Always interesting and useful.
Thank you!
Cat7 recommendation is a safe one - if you are about to pull new cables though your house, to be used for various devices (including PC-s, newer TV-s etc).
However if you are pulling cables for ESP32-s than CAT5.e really is more than enough (because it's good for up to 1 Gbps)... and is a much cheaper option too. Also easier to crimp.
Thanks for a review !
Thanks for the clarification!
@6:50 i want to know more about the Power over Internet 😅😅😅 Great Video, as always btw!
:-)) My mistake!
This week, I decided I wanted to make a small embedded network tester (ping, DHCP, etc.) perfect timing!
Cool! PoE for sure enhances its usability.
@@AndreasSpiess, ended up ordering an M5Dial + PoESP32 and a Lilygo T-POE-Pro, let's see where it leads :)
Great find as always
Thanks for sharing your big knowledge :-)
My pleasure!
I want to ask a question to the audience of this great channel! In this, and not only this, video there is evidence that swiss people do not only exist of swiss cheese and clockwork precision...
You are right. With only cheese we wold not survive. Expensive clocks like Rolex help more in this regard…
@@AndreasSpiess You would survive with only cheese. Try eating your Rolex...
@@Heisenberg2097 That is why they invented money back in the day, I think
T568B was designed to handle CAT3 / ATT Phone wiring (the RJ11 plugs fit into an RJ45) so for the USA its the standard cable.
Cat-5E is generally rated the same as Cat6 as well and can generally carry 10Gbe no problem.
Thank you for your additional information!
I have been using the W5500-EVB-Pico for a number of years now, lots of I/O pins and the RP2040 :)
How do you program it?
Arduino IDE ...
#ifndef ARDUINO_WIZNET_5500_EVB_PICO
#error This file is for Board:"WIZNET_5500_EVB_PICO" only
#endif
I have some examples if you want?
I recently deployed an ESP32-POE (Olimex) with WLED, 4 output channels for LEDS, and a I2S ADC for line level audio input. My only struggle was finding enough 'raw' GPIO, and I needed to desolder a few 0201 SMT resistors from the I2C lines that I didn't need. Would be nice if it was a solder jumper or something easier to 'clear'.
Maybe somebody from Olimex reads the comments ?
It is a useful and interesting subject 👍Many information and as usual, clearly explaining . Thanks/Danke a lot !!
Glad you liked it!
Thank you. I will look at the boards but probably hold off. I have some stuff that is connected with wifi (it isn't perfect, wifi drops out sometimes) today, and i guess that works well enough for now. I ended up with some 2.0mm header cables a while ago. 2.5mm is much easier.
Indeed, wires have less complexity. Still, they can fail if the router goes down.
I recommend cat 6a over cat 7 for three reasons:
1. Cable runs can be longer (6a is 100 m max rated, cat 7 is 30 m max rated) which could become a problem if you're not careful with the length of your cable runs.
2. cat 7 requires shielding, which can be hard to deal with without specialized tools, whereas cat 6a only requires foil which can be cut by anything, realistically. It can also come shielded if your area has high emf interference.
3. cat 6a is cheaper. Why spend more for the same network speed
Edit: Oh, and 4. cat 7 has a new standard that isn't the RJ-45.
Thank you for the additional info! Some other commenters even wrote that there is no CAT7 standard...
Just make sure to not use "shielded" Ethernet cables.
Most of these boards are not isolated from their Ethernet shield and thus there is a direct connection to the chassis of the switch.
Also when using PoE, keep in mind not all use isolated PoE, so when you connect the board to a PoE switch and also to the PC for debugging, you may end up frying the board, your PC or your PoE switch.
Wait, don't all PCs and most if not all routers use isolated Ethernet?
@@ligius3 Yep, but many ESP boards with Ethernet don't and thus you have a direct connection with the chassis of the switch/router which may be connected to some other PC which isn't connected to a power outlet with earth pin and thus if you use the more expensive shielded Ethernet cables, you may have quite a high voltage offset on the GND pin of your ESP board.
If you then connect this to your PC (e.g. via USB to serial chip as some Ethernet boards also don't have USB) or logic analyser, you can for sure fry electronics.
So that's why I strongly advice against using shielded Ethernet cables to connect your ESP boards.
Some PoE Ethernet boards do not have isolation on the PoE circuit.
For example Olimex has boards with and without isolation on the PoE circuit. This is clearly labelled in the name with "ISO".
Yes, just saw now the schematic and description for the Olimex board and it does not have a tranformer. Some ETH chips I think include a transformer inside but not the specific Microchip one. But I agree that the shield might be at a different potential, but compared to what, to ground? It still needs a path, so two connections, so not sure how the current would flow. The PoE injector probably has an isolated supply. Ethernet doesn't have a ground pin, so not sure where the voltage will flow from the shield.
@@ligius3 I think you're mixing up a few things here...
In the RJ45 socket, there are some transformer coils for the signal wires (well in nearly all but the really cheap ones) so the signals are almost allways isolated or at least on the other side at your switch.
However for PoE, there is some center pin for each pair which carry the PoE voltages.
The PoE circuit to tun this 48 - 57V into some more managable lower voltage can also be isolated. For example the Olimex PoE-ISO board has such an isolation for the PoE.
N.B. when powering your board via PoE, the data lines should absolutely be isolated or else you will fry your Ethernet chip.
But those are often just isolated in the RJ45 socket.
Now the shield of the RJ45 socket.
This should only be connected to the GND of the board via some 1M resistor and maybe some capacitor too.
However on quite a few ESP32 Ethernet boards, this shield (thus the metal frame of the RJ45 socket) is directly connected to GND of the ESP board.
So if you connect this shield with a shielded network cable (thus metal shield wrapped around the RJ45 connector), then you will make a direct connection to the chassis of the switch.
And if this switch is connected via a shielded cable to another PC which isn't properly connected to the Earth pin, you will introduce a voltage offset of +/- 110 - 120 V from this other PC.
This is like when you get shocked when touching a PC case.
So you may introduce quite a voltage level offset between your ESP board and whatever equipment you have at your desk.
Remember "this other PC" can be located in another room, connected to different phase, etc.
This is why I always advice not to use shielded Ethernet cables when connecting ESP boards. At least not when you also need to connect other stuff to it, like some debugging tool, a PC or sensors which can be touched.
@@TD-er Thanks for the clarification, it makes more sense now.
@4:06 the T-568A standard is nowadays almost obsolete and AFAIK is only used in some old corporate and/or government buildings for it's compatibility with landline telephony. Nowadays I think every ethernet cable sold is crimped according to the T-568B. Fun fact: some switches will detect and resolve (to some extent) crimping errors (I know Unifi does)
Thank you for the additional info. I did not know.
Nice video, but it seems identical to your video #365. Would be nice to make an updated one with the new Olimex ESP32-POE2 board.
Yepp, it's in the description. Usual summer stuff front Andreas, explained a year or two ago: during summer views are lower, and he is on a holiday too, so mostly recycled videos.
@@AkosLukacs42 What's the purpose of this?
@Marvin-of3rt It was proposed by viewers because not all saw all my videos (you see it if you read the comments).
The aspect I am most curious about is power consumption.
I have run cat5 to each light switch for future smart home augmentation (I want the relays to be wired in a cross-over configuration so all the lights work as normal even if the relays fail to switch). I am currently deciding on what to put in the switch boxes (in theory I could just use the 8 cat5 wires to the relay and current sensing and then do all the smart stuff at the hub). Or I could use RS485 and 240vac-3.3vdc transformers in the wall switch boxes. Or POE ESP32 in each wall switch box.
Ultimately I want the system to use as little power as possible. What is the best option to achive this?
1. a transformer in each box
2. 48vdc POE
3. direct remote relay actuation (48v relay?) (how could I do remote current sensing (for switch state sensing), over cat5 conductors)
An ESP32 consumes less than 100mA@3.3V without PoE. So three of them consume one watt. I would save elsewhere unless you need a lot of them.
@@AndreasSpiess I do need lots of them. The aim is to keep household parasitic power draw to a minimum from the outset. (I turn stuff off at the wall at night to reduce standby waste😊)
I don't want to be redoing it all once in 10 years once there's 100s of devices.
The problem is efficiently getting
Ethernet power usage is tipically proportional to the number of pairs used. For some devices where I can't disable gigabit (or it is complex) I just make sure to use cables with only 2 pairs. In one device I lowered temperature by 5 kelvin.
For today standards even 2 pairs (100Mb/s) uses a lot of energy.
Single pair ethernet (SPE) is coming out now, and will reduce power consumption, and also allow for PoE and Multidrop. I think soon (in geology scale) SPE and Fiber will cover all uses.
Good point. I did not know!
Shielded and/or foiled UTP cable is more important than category in this case. I would not use crimped cables, no matter the application. Use keystone modules instead and always connect the shielding to the ground or you just got yourself a big antenna :)
Thank you for sharing your experience!
After I recently got rid of my old Poe switch and transitioned to mikrotik, I'm currently transitioning a lot of stuff to passive poe. Benefit is that it runs from a 24V lifepo battery with a lot less conversion steps. At the moment my Nas is still on a conventional UPS but will also transition soon.
Fun fact: a lot of hardware stores here already transitioned to cat 8 for shielded cables. Considering their usual markup, it's not even that expensive. I think the difference from cat 7 to 8 is mostly the plug but I'm not entirely sure. Must be small enough that it's not worth having both in stock.
Wonder when we'll get an esp that supports fiber optics ;)
All my network stuff is from Mikrotik, too. But I do not particularly like the passive PoE because it is not widely used. I use if for their Access Points, though.
@@AndreasSpiess some of their models also support active poe. (Switches as well as the APs) Both clearly have some benefits, I'm happy with them. Recently discovered the power behind the 28° antennas in the sxtsq AC. Impressive for that price point.
Also cheaply acquired one 60ghz ap, hope a second one also cheaply pops up soon. Your video showed me I need to test it for my stuff too.
I use TTGO poe board with esphome without any problems. Truly eth circuitry consumes a lot of important pins but on the other hand I have a way more stable BLE stack as it does not have to share radio with WiFi. Using the same sketch with BLE over WiFi lead to frequent reboots via watchdog and generally poor stability. I use it to monitor my offgrid (inverter via uart + victron charge controller via blue and jk-bms also via BLE). It sends enormous amount of telemetry and over eth it finally got stable. Plus I can power it from offgrid :)
Indeed, WiFi and BLE over the same radio is not easy. Your proposal is much better!
What do you think about single-pair ethernet, e.g. with the SPI connected Phy LAN8650B1-E/LMX?
Power over the cable should be possible too.
So far I did not see it used by Makers. I never tried it.
@@AndreasSpiess Would such a board be of interest if I designed one? How do you estimate its chances?
Consider the following: The board connects to a pair of wires (Klingeldraht).. It could either connect to one switch port or connect to a bus with CSMA/CD protocol. So it would be a fancy alternative to a field bus solution.
@@ghlscitel6714 I do not know how big the market is. But as always, it is hard to find customers, even if they have this particular problem. Many people these days go the "standard" CATx way for their homes.
But you can try and sell it via Tindie or so.
Interesting and impressive!
Thank you!
Dido you try to see if it supports half-duplex so that only 4 pins should be needed (and if the standard SCL/SDA pins could be left free) ?
No, I did not try that.
I'd like to try an ESP32 board with Ethernet & POE capability!
I have a specific application where i need an RFID reader that is connected via an Ethernet cable with POE.
Currently, I'm planning to use a different chip, as i have a board from Sparkfun that already integrates the RFID chip with a controller, and has Ethernet capability.
But my home security system will use RP2040 chips for the sensors, and ESP32 for the console. Plus, i use esp32 for so many other things, there are times when Ethernet would be useful and preferred.
But i guess cost of the boards should be considered as well.
And whether it not there are enough free pins for the application!
(Why do they use 8 i/o pins if they're already using i2c?)
Thanks for the update!
👌👍🤪
This is why I still use the Arduino IDE: I can use different MCUs for different purposes...
The ESD sticker is a warning applicable to the entire PCB; there is nothing inherently more ESD-vulnerable about POE circuitry than anything else on the PCB.
In ESPhome, Ethernet and Bluetooth works perfectly well simultaneously. I have one of those Olimex PoE ESP32 boards running just the basic ESPhome platform with Bluetooth Proxy enabled, nothing else, works perfectly. Connected to a high gain 2.4GHz antenna I can open my garage & gate with a Shelly Bluetooth Button from down the road (so long as Home Assistant also sees me as within range).
Thank you for sharing your experience with Bluetooth. Good to know!
I did some testing on Ethernet for ESP32. I created like 6 or 7 versions of my own PCB untill i found my solution.
There are many problems like the clock from the crystal is on GPIO0. So you have a 50:50 change to hit the boot mode while resetting.
A solution for this is to power the crystal by GPIO (which is in standard layout) and delay it afew seconds after boot.
The LAN8720 is nice, cheap but old. A newer version is the W5500 which using SPI. So you only need 4 Pins of the ESP32. But the current ESP IDF on Arduino IDE does some problems with some librarys.
My solution is to expand the pinout with an mcp23017 which gives me 16 IOs.
Thank you for sharing your experience!
Interesting! Presumably one could make a magic Wake on LAN packet on the ESP? I'm wondering about this for a network based switch for a PC server
Yes it's pretty easy. There are example sketches available
@@TecSanento Great - thanks!
5:13 whoa, quite surprising - I still use only 5e as it was much cheaper, almost no of my devices were 1Gbps and also I recall cat6 had shielding that required a specific device? But that last part I would have to recheck.
You are right, I should have mentioned the use case. I meant, that I would not use CAT5 cables for a new installation in my home.
I had a project I wanted to do a few years ago with a wired ethernet ESP32, and none existed, or they weren't really common. Ended up going with completely different hardware that was beaglebone black based, which also has wired ethernet.
Indeed, the Linux boards offer Ethernet for a long time.
FYI, any cable labelled Cat7 does not follow IEEE and EIA specs and is not officially recognized as 'category 7'. It departs from the industry standard, has no real definition, and should not be used in any production environment because manufacturers can literally relabel Cat5 as Cat7 if they want, there are no rules. You almost certainly don't need anything more than Cat6 for any application, but if you feel you do, go with Cat8.
Thank you for the clarification!
If you are going to assemble your own cables, I highly recommend investing in the "Crescent Wiss 5" Electrician Scissors - 175E " ~$16 USD as Amazon. Not only will the scissors cut the wires nicely and cleanly at 90 degrees, each blade has a scalloped ridge where you can pull the wires over to cause the curly-qued wire to straighten out and be stiff --- that makes it so much easier to feed the wires into the plastic housings which takes practices and can be very frustrating unless you have clean cuts all at the same length and stiff. Secondly, if you use outdoor rated cable (for PoE surveillance cameras), beware and you may be best served purchasing a wife assembly kit which includes the plastic housings specified for that particular type of cable. Lastly, I would stick with named brand connectors.
Thank you for your tips! Unfortunately, I did not find a supplier for Crescent Wiss in Europe. They only list US and Canadian suppliers :-(
In industrial applications, the Ethernet cable uses only 2 pairs, and the cables are only 4 wires with a shield. I wonder if a POE circuit can be designed for the ESP32 Dev boards that also only use 4 wires? to allow more IO.
The ESP32 is not wired directly to the ETH port, the ETH controller chip uses that much pins so it doesn't metter how much pins your ETH cable uses.
it can
gigabit ethernet uses all 4 pairs, and PoE works fine on gig ethernet (where some of the pairs are used for both power and data simultaneously). You therefore could do the same with 10/100 that only uses 2 pairs, and also use those pairs for power as well, but you'd have to roll your own boards, as using pins 1-2 and 3-6 (the two pairs used for 10/100 ethernet) for PoE is non-standard
Once Single Pair Ethernet (SPE) gets some more traction, I’d use that.
SPE with PODL seems like a very good choice for IP to the edge, especially T1L which can reach 1000 meters with a single pair of wires. At only 10Mbps but that is often enough for data collection and remote actuation.
Good point. Unfortunately, it seems to be rarely used in the Maker arena.
Funny that you showed some CAT-7 RJ45 Plugs. According to the standard, there are no Cat7 RJ45 Plugs. You always downgrade your Cat 7 Wiring to Cat 6a by using RJ45 Plugs.
Good to know. Thanks!
POE++ would be cool as you could have a smart device that uses up to the limit of the ++ spec (think POE power fans, displays, lights, etc)
I am not shure if it would be an overkill for most applications and just would increase cost.
I'm starting a new ESP32 WROVER project and I have to cross off all the pins I can't use because they're dedicated to something. Leaves me only about 12 GPIO pins...
I even made a video and an Excel sheet with this info...
I'm using the Lilygo board for one of my projects. It's kind of not will thought out.
The exposed pins, as you said, are a strange collection and it does not expose 5V, which would have been nice.
Furthermore, I'm experiencing periodic boot problems. No idea why. That's the most annoying problem. If anybody knows how to solve that, let me know.
Indeed, infrequent reboots are very anoying and not easy to find.
@@AndreasSpiess I guess I wasn't clear in what I meant. It's not that the board reboots by itself. My problem is that it doesn't start properly after a reboot. It somehow seems to have problems to boot from flash sometimes. Most of the time removing power helps, but not all the time. This makes every OTA update a gamble...
3:28 more like a 8p8c connector right?
Yes, a sort of. You can google the differences if you are interested.
Another tip regarding the ethernet cables: if you're installing them in your walls or somehow mounting them permanently: use solid wires.
Otherwise use stranded wires.
Good advice!
Could a LoRa chip be added and turned into a PoE powered Meshtastic node?
I do not think that this is supported by the Meshtastic project.
Unfortunately in the Australian state of NSW, it's illegal to install any cabling that transfers data or camera feeds unless you are a licenced electrician, So it's WiFi for us
Is there a good reasoning for it or is it just the result of lobbying?
Wouldn't that mean you'd need a electrician to install individually addressable LEDs on your porch? Sounds stupid
What about using RJ-45 for power and/or HDMI?
I can only imagine what would happen if you just install the cables without connectors, so that they exist but are not functional and after building inspection(?) you just connect them?
I thought Finland is a nanny state, but holy crap that is insane, my tinfoil is itching, do they want the ability to jam civil communications?
I've installed my first RJ-45 networks when i was 15yr old and had to learn those old skool "crossed" connection types and all....
There is no nanny state like NSW Australia. There are laws for everything here.
... that is only one branch of the so-called "(western) free world" 🤨
Would it be possible to use a ethernet esp32 to use it as gateway to transfer esp-now iot device messages to a mqtt broker in the network
I am not sure. Maybe you check the „Farm Data Rely“ project. He uses ESP now and Ethernet if I remember right. I do not use ESP now
6 Pins left is not a lot. I'm using the WT32ETH boards. Only downside no POE but a lot of Pins left to use
Also a good choice!
How do they get Ethernet on a newer ESP32 or is this only the base version? Well the SPI to ethernet stuff is sadly only fast ethernet. But they only use SPI MISO/MOSI
Are there better chips for the newer ESP's with more speed well yes I know it's crazy how much it can already transfer.
Hmm aren't there High Rose, Telegärtner and Western Connectors? Well I'm not to sure about that plastic flap stuff, I use a Telegärtner Ali knock off.
I cannot answer your questions with one exceptions: Most (or all) new ESP32s do not natively support Ethernet anymore. I use standard ESP32s for that purpose.
@@AndreasSpiess Ahh so no adapters in your case. I wanted to use the S3 version as it has more pins + better BT/PSRAM support.
And then it's possible to wait to the ESP32-P4 for new Ethernet Applications..
Got the P4 already quite an amazing pice of tech. But it seems i have some issues with the LCD controller for the extra display i bought.
i don't think you can compare 150mbit wifi vs 100mbit cable as 150mbit wifi is single duplex and has overhead. Even on perfect conditions it would be max of 100mbit, whichi I would not think you could ever achieve on esp. Ethernet is full duplex making the total bandwith 200mbit. So it's not a bit better, it's alot better.
You are right!
I suspect that BL will not work as it is using the same chip as wireless which is not used. Try to tall back to wifi and see what happens. I'd like to have the option to use wifi if there is no connected ethernet.
There are other comments that say that BLE and WiFi work but less stable than BLE and Ethernet.
@@AndreasSpiess oh, that was not what I meant, but if the same chip is used for both Wifi and BLE, then maybe if you do not enable Wifi then BLE might not get activated. Just a thought. As for stability, I have two esp32 modules running the ble proxy (esphome) and they were working perfectly, then I upgraded esphome and I now see drop outs with some of my ble modules. I suspect that the problems I see is down to coding and not hardware - but you touch an interesting subject.
Is there any useful application for ESP32 that actually need ethernet ?
BTW i have many RPI that i control it with RS232 to old pc that convert it to ETH (with IP2COM sw) , slow (115200) but cheep and do the job fine.
I use a LoRa iGate connected to Ethernet, for example. And I know that people with modern cabling in their homes prefer ethernet over WiFi for their sensors.
Hi sir, currently I am working with esp32 and zmpt101b sensor module. zmpt101b working fine but when I try to connect wifi (wifi.began) then zmpt101b showing zero values. Please help me
Maybe you connected it to the wrong ESP32 pins. WiFi uses one ADC (watch my video about the usable pins of an ESP32)
DEC!
Yes!!
What are some good resources for a student looking to get into ESP32?
I would start with a project useful for you. That is how I learn.
Most esp32 wont connect to 5ghz networks, does this also apply to ethernet
No ESP32 will connect to 5GHz because they do not support it. Ethernet is not wireless, so no GHz apply.
I use W5500, and I'm looking for PoE with this chip :)
Cool!
Cat6a isn't really a "compromise", the way you think it is.
There is no 8p8c Cat7 ethernet standard. Using 8p8c with an 8p8c connector is out of spec.
The reason you see plenty of cat7 being sold for ethernet use, is simply because the seller can make more money by upselling people to cables with a higher number on them.
If you need 10Gbit, use Cat6a. If you need shielding, use shielded Cat6a with grounded jacks.
Anyone trying to sell you Cat7 for ethernet is cheating you.
Thanks for the info. I was not aware of this.
@@AndreasSpiess I forgot to provide a reference. Rather than linking to the IEC standard itself, here is a link to the Wikipedia page explaining that section. If you would like to read the actual standards doc they provide a link.
en.wikipedia.org/wiki/ISO/IEC_11801#Class_F
Can Wifi and ethernet work simultaneously?
I never tried it.
i prefer Ethernet because if you budling iot on some critical infrastructure 9/10 is going to have good connection and stable
wifi 3g and 4g is really susceptible for weather if is rain wifi is useless and cant be use in critical infrastructure and for iot devices
I agree. But sometimes WiFi is very convenient…
3:37 cable pattern
???
@@AndreasSpiess just bookmarked the important spot for myself
Hallo Andreas, der `CRS112-8G-4S-IN` ist mittlerweile wohl "discontinued". Wenn Du Dir heute einen neuen Router kaufen würdest, welches Modell würdest Du nehmen (OPNsense bzw. notfalls pfsense)?
Ich habe jetzt einen Mikrotik RB5009UPr+S+IN und bin sehr zufrieden (ich verwende viel PoE)
❤❤❤❤🎉
Do no purchase something with a sticker for protecting it medium voltage railing, especially when that board doesn't even have a UART serial chip on built in.
Why?
I hate all those poe boards that won't provide Any external power to drive LEDs or actuators.... A 12V 1A could do a lot of useful things :/? And cheap poe breakout boards do that - couldn't they use that Ic as well?
All depends on the use case. Most of my PoE bords do not need a lot of power. So I do not want to spend money for a better chip or a bigger board...
I prefer the cable version.
:-)
I always prefer wired connection over wireless
Good point!
Wireless, over the new WiFi 11 protocol.
???
@@AndreasSpiess Sorry you are only on WiFi 5 or 6? I'm from the future.
Wait a seconds! Guy with swiss accent familiar with NIVA!? Lada NIVA!?
Yes. I drove one in Kamerun when I worked for the Red Cross.
I would suggest to not crimp your own cables, it is a major source of problems and instability. I have all the tools and haven't crimped one for about 20 years, patch cables are cheap. Instead, get some installation-type ethernet cable and the appropriate keystone jacks, those can be fitted without any crimping tool.
I agree if you get the right length. Sometimes I have to crimp because the connector does not fit the hole.
Wy repost? Video is old!!!
During summer break viewers proposed that. I do this for several years.
no f-n way, is that a yellow "Niva" ?
Yes!
educational purposes 😂😂😂🧑💻
Of course ;-)
I wish people would get off using Arduino when it comes to the ESP32 and all its variants. You all are seriously limiting yourself compared to using ESP-IDF
You are right, here are limitations using the Arduino IDE. But you have also all the libraries and projects available...
I fail to see the point of an esp on such a board. Since blueooth does not work, i suspect wifi will also not work; and if wifi does work then this is a potential security risk. So either way its kind of pointless. I would rather see a teensy if you need speed or even a atmega328p if speed is not an issue, rather than the esp32. This is like buying a short wave base station radio for the sole purpose of using it as a stiff writing surface to write someone a letter.
First of all ESP32 is extremely cheap, and second of all, it comes with an inbuilt Network Stack. That will cost any board like an atmega or stm32 some performance.
A few other commenters use Ethernet and a ESPhome BLE proxy. So it seems that it was a hardware problem on this particular board.