#365

[@apalrd8588]

I've used the Olimex board (ESP32-POE) for awhile and it's definitely my go-to ESP board for most projects. PoE is super handy.

[@AndreasSpiess]

Thank you for sharing your experience!

[@bryanst.martin7134]

At 280k wide, its a considerable front row. Glad I caught center seat!

[@AndreasSpiess]

:-))

[@OpenEmoto]

I think the ESD yellow sticker is only there to warn users of handling the product for Electrostatic Discharge, which can break electronic devices. I never saw POE devices warning about potential risk. 48v is not too risky in most scenarios (dry hands, not skin cuts).

[@AndreasSpiess]

You are right, it was more a joke. I would expect that the POE parts are less prone to be destroyed by ESD because they have to be protected best. And I never found such a sticker on any other Chinese board.

[@MartinBgelund]

@@AndreasSpiess While it's true that you never see ESD stickers on electronics from China, you must also be aware that much of the ESD sensitive equipment from China comes in ESD protected bags. Also, many makers warn about ESD in their videos; Bill from the DroneBot Workshop and Chris from Explaining Computers often flash their ESD protection wristbands - and I think I've also seen you use one :-) So I take this as a sign that Chinese manufacturers are now evolving, and moving up from just selling cheap stuff, to selling goods that are also having user needs and user satisfaction in mind. And that's a good thing, I think.

[@quakec4233]

That's what the symbol against EDS appears as! LilyGo created an affordable dev board for the public and probably envisaged people handling it like a brick in a riot. That said ESD is to be taken seriously, if you touched it and it doesn't work, then it's your fault, is what they're saying. The chip under the "sticker" is an SI3404, a PWM switching regulator responsible for converting a high voltage supply over ethernet connection to a regulated low-voltage supply, so yes if you damaged that, something could go crappy.

[@AjinkyaMahajan]

It would be great to switch home automation on PoE for multiple reasons. Also, it will reduce the Wifi traffic a lot. Thanks Cheers ✨✌

[@AndreasSpiess]

Yes, you are right

[@TD-er]

Just keep in mind that the PoE standards like 802.3af and 802.3at require a minimum load of 0.44 Watt. So it isn't the "perfect solution for everything". But still the ESP32 + ethernet gives a very responsive solution. Where WiFi connections may sometimes respond for upto 100 msec (first packet after some time of no communication), an ethernet connected ESP does react a lot faster. In ESPEasy I've been using it for over 6 months now and it is a really good match, to combine an ESP with ethernet. Too bad it does take so many pins. N.B. Ali Express now also has some "slightly less expensive" ethernet cable testers that can also measure PoE standard, supplied voltages (and on what pins) and power drawn by the connected device. Still under 20 euro, so not too expensive. But a real must-have if you're working more often with PoE. N.B.2 Keep away from the really cheap PoE switches (on Chinese sites) and also read reviews on the better known brands as some brands have had a few PoE switch models/revisions that were just frying the connected devices. (yep another reason to buy such a PoE tester)

[@dg0mg]

6:52 min "Power over Internet" would be a great Idea! :)

[@ManfredBrauchle]

back to the 80s when our telephones were powered from the network 🤣

[@Luke-san]

He should patent that! Even Swiss banks will not be big enough for all the money that he will get then.

[@AndreasSpiess]

:-)) Actually, POE is similar to the 1980s telephones with only one wire...

[@daskasspatzle2396]

With a google account you probably get the first 15 GWh for free :-)

[@newburypi]

@@ManfredBrauchle I think you'll find that POP (Power Over Phonelines :) was introduced in the late 1800's. The 48 volt phonelines are still in use today. However, many phones today have ancillary power that is used to power fancy displays, answering systems, and Bluetooth connected add-ons.

[@michaelbyron9688]

Andreas, for me this is a very valuable video. You have saved me a lot of digging. Thank you. RE "not enough pins" another inexpensive tied in processor(ex. Arduino MIni Pro ?) can add pins if needed since power is not an issue.

[@AndreasSpiess]

You are right, there are many ways of adding pins if you need.

[@Lolatronn]

4:01 I have never heard a better explanation of the wiring standard differences.

[@AndreasSpiess]

Thank you!

[@mahudson3547]

I have been crossing the PITA wires in my cables for ever. And now I learn it isn’t necessary. Thank you!

[@AndreasSpiess]

At least as far as I know.

[@AndreasDelleske]

@@AndreasSpiess yep it’s true. Switches without MDI have not been made anymore since 100 Mbit/s got on its way. I don’t even know a single case when connecting two non-switches (modem to router) need it anymore.

[@zeberto1986]

If you look at the material for Cisco certification they will still tell you when to use cross over or straight through cable even if it’s not been needed for years. Handy to know though when dealing with legacy kit.

[@f1r370]

11:50 Andreas, I would disagree with your statements we should invest in Cat7 cables for new projects. Controllers like ESP32 wound never go above 100mbps (maybe someday 1gbps). For that Cat5 is more than enough (Including PoE). Cat7 is 2-3times more expensive and harder to work with (because of thick shielded cables) than Cat5/6

[@AndreasSpiess]

You are right. In my world, Ethernet cabling is done without a purpose in mind, just as an infrastructure. Of course you do not need Cat7 for this ESP32.

[@mariuszkrzanowski]

In my opinion even the 1MBit ethernet for temperature reading or swithing lights on/off is overkill. The truth is that we do not know the future, so the real question is. Is better to invest on the begining or destroy walls later?

[@brandonallen2372]

Cat7 also isn't recognized as an official standard by the TIA/EIA.

[@tinygriffy]

When i look into ebay for example I see a 25% price difference between cat 5 (40€ for 100m) and 7 (50€ for 100m) cable not 200 - 300 % , why do you say such a thing ? It's just not true. Harder to work with because of the thickness, really ?? Sorry Sir, but that's ridiculous. You get almost double the copper plus shielding which may be good for the next 25 Years of Data transportation and you still find something to complain about ... whau !

[@f1r370]

Hey, @@tinygriffy It's not about the complaint. The idea of the comment sections is for everyone to express their opinion/share their experience, so you have another point of view on the topic. And I see you're getting emotional, but please get some practice in structure cabling before claiming something is ridiculous. The price of the cable should accommodate for a lot of variables. There are cheap and expensive cables out there. There are CCA (copper covered aluminium), CU (solid copper), then there's thickness of shielding foil, is there braided shielding or not, etc. Then we're moving on to RJ45 plugs and jacks. Cat6A's are MUCH more expensive than Cat5. They take longer to crimp/assemble and they're generally hardER to work with. You don't believe me, take a look at this: kzbin.info/www/bejne/nGPFen-pm9prhK8 kzbin.info/www/bejne/l4fXgKCoirF4aNk

[@PhG1961]

I still use Cat5e for many applications, that is, as long as I have them in stock. It depends on the purpose and very important the distance. You'll be amazed of the speed over short distances. Usually I use Cat6, also for short distances. It works quite good. Why not prepare a video with distance/speed tests. Great video btw !

[@AndreasSpiess]

You are right, for existing projects or slower speeds they are ok. I meant with a new project: If you start to wire your home, for example.

[@lal12]

@@AndreasSpiess for wiring my home I will use Cat 7, but for (most) IoT I would use the cheapest available mostly Cat5e. The ENC28J60 can only do 10Base-T anyway. And I use simple passive POE (or just my needed Voltage e.g. 5V) over the unneeded two pairs.

[@EagleEyeShooting]

Thank-you. Would like to see your breakdown on the new ESP32 T-Journal Cam. Im seeing a floating grey bar or reduced image stream when used as a Soft.AP

[@AndreasSpiess]

I do not like these ESP cams. Not enough quality...

[@markuszingg3131]

Great! Left the ESP32 aside for the lackof wired ethernet! As always great video! Thank you. 😃

[@AndreasSpiess]

You're welcome!

[@waltsteinchen]

Hi Andreas, again a superb video, clean, straight forward explanation of the stuff we need. Since I do use the ESP32 a lot I've always considered some wired projects but was to lazy starting research for the necessary software changes. No excuse anymore ;-) I run the same rule as you: if it has some importance I use wired Ethernet whenever possible; it is often a way more "set-it-up-and-forget-it" solution than using WLAN. And - Btw, I'm not too far away of running short on IP addresses in my home Class-C network already ;-)

[@AndreasSpiess]

So you have to switch to IP6 ;-) I still have some time for that step.

[@dl8cy]

6:52 Power over Internet .... nice :-)

[@AndreasSpiess]

I already made the same mistake in the POE video :-(

[@JanBabiuchHall]

Can I download a stronger power supply for the RTX 3080 I'm never going to get?

[@jamesmichener7526]

Your advice of getting a Ethernet cable tester is IMPORTANT. It is a must if you build and crimp your own cables, but beware that my experience is that about 5% of store bought cables can have problems. It is also amazing how many errors in wiring can go undetected in use, as Ethernet will drop speed down to establish a connection. There are wiring errors that can cause a 'bad day'. A tester is money well spent. Highly recommended.

[@AndreasSpiess]

Thank you for supporting me ;-) We probably have the same experience.

[@jofie2302]

Perhaps one of the best use cases for wired (at this point) is for security-related devices, like door sensors, security cameras and such. WiFi based devices can be easily disabled with a readily available WiFi blocker/jammer. Big drawback of wire is the needed infrastructure - a router that supports POE, and ethernet cables all over the place. A compromise could be a powerline adapter that piggybacks ethernet on the (existing) mains wiring, and that has POE. You then only need an ethernet cable from the closest power outlet.

[@AndreasSpiess]

I agree with your comment about locks etc. POE routers are of course more expensive. But very handy...

[@zenitzenit9053]

The small hand again 😍

[@AndreasSpiess]

It lives somewhere here and appears from time-to-time ;-)

[@marcdraco2189]

@@AndreasSpiess Like many here, I love it! It's not just the hand, it's the glove. It makes the channel that little bit unique (in addition to your excellent presentation). And I love sitting in the first row, I only wish I'd found your channel years ago, but I only started learning Arduino and MCUs about three months ago.

[@katsim6799]

@@AndreasSpiess love that little hand!

[@OpenEmoto]

Just googled about the cable categories. Plain cat6 cable can support 10G up to 55meters. So, technically cat6, cat6a and cat7 can provide 10G ethernet. Great video!

[@AndreasSpiess]

You are right. I am not sure if this is true when they are in a tube with other cables and maybe some 50Hz power lines. CAT 5 and 6 have no shielding.

[@L-36]

ESD stands for Electro Static Discharge and means the board is static sensitive. Means you should wear a grounding strap and work on an ESD matt or you might burn out the board.

[@AndreasSpiess]

You are of course right. It was meant as a joke. This is the first Chinese board I got with such a sticker. And the sticker was placed in an area where I think the ESD should be not a big problem. All other pins are probably more critical...

[@L-36]

@@AndreasSpiess :-)

[@ronaldronald8819]

Wired is all the rage and yea it is cool.. Thanks for taking wired into account. It is in many cases the best option. I try to look at it like a engineer should and figure out what the best solution is, but i am a bit wired biased. A matter of taste, experience and training i guess.

[@AndreasSpiess]

Quite similar here...

[@christopherguy1217]

This is a good addition for the ESP32, having PoE on the board will make this very useful for stationary installations.

[@AndreasSpiess]

Yes, definitely

[@Simone-mk1qu]

I've tried every board that involves esp32 and Poe for my company. The olimex boards are crappy and totally unreliable: many of them comes from factory faulty and they are very sensitive to ESD discharges (also the esp32-poe-iso). The ttgo boards are okay but only for hobby projects, as you pointed out too many pins were used and the board becomes pretty useless. The best one that actually is available on the market is the wEsp32 from silicognition, yeah, is more expensive, but affordable, totally isolated and it can provide up to 13W from the Poe step down converter on board

[@f1r370]

Hi Simone, could you elaborate on "crappy". I'm planning to base my home automation on ESP32-ISO from Olimex. So far I've bought only 2 boards and I'm quite happy with them? What kind of troubles should I expect?

[@Simone-mk1qu]

@@f1r370 hi plamen's, I've tried to use them in industrial environment (esp32-poe) with my own rs485 iso converter, we have seen that the PCB layout is very compact and optimized, but the Poe step down converter develops a lot of heat that will affect the ripple on the power lines (that reaches high values on long term power up) This, for us, was only one of the biggest problems, also, the pcb layout of the ethernet module is not optimized and it will result in non stable ethernet transfer speeds/stability: comparing 10 boards, we have seen that there is up to 25% of difference between speed of boards. Another big issue that has the esp32-poe and esp32-poe-iso, is the ethernet enable/reset management: is poorly implemented and sometimes (during reboot/power up/working) the ethernet shuts down without any apparent reason. I mean, for a home project they will be okay, but in a real world business scenario they are totally unreliable.

[@AndreasSpiess]

Thanks for adding your information.

[@akda5id]

Thanks very much for the rec of wEsp32, it looks like a well designed board.

[@SchmurtzAlex]

Thanks Simone, did you test this one too ? www.cnx-software.com/2020/11/09/6-wt32-eth01-is-a-tiny-esp32-board-with-ethernet/

[@TomaszDurlej]

Youre rule of thumb is very good, for you and anyone else. Radio waves pollution is starting to be problematic, especially in big cities. I’m very disappointed of Ethernet over HDMI don’t succeed, it’s great for our “smart” home cinema.

[@AndreasSpiess]

Many technical standards are not used after a few years. this is why I like Ethernet...

[@katsim6799]

Yes, worth creating poe boards. Use in security projects to keep them from air hackers. Definitely worth it to keep peepers from accessing an esp32 cam or even wifi door lock.

[@AndreasSpiess]

A Wi-Fi door lock is probably not a goood idea, I agree...

[@RandomDude-ni3vt]

One problem I encountered often when crimping network cables: Poor quality cables have conductors made from copper coated aluminum (CCA). I never was able to make cable that properly worked at 1 gigabit (100M worked, though). Once I switched to real copper cables, every single cable worked at 1Gbit, so I really think the CCA is to blame. Unfortunately it can be difficult to tell if it is real copper or CCA. I only realized after looking at the cut cable under a microscope. I will never again buy cable that does not have a propper data sheet! Also, thanks for kind of promoting the ESP's LAN interface! I also think that wired is in many cases preferable over wireless and I hope the support in the community for this will grow. Recently I wanted to upgrade my 3D-printer's webcam to LAN. Only when the ordered network PCB arrived, I realized that the camera interface and the LAN interface share pins. And, if i saw it correctly, at least some of these can't be assigned freely. So no LAN and camera interface at the same time... Or does anyone know a way out?

[@AndreasSpiess]

Thank you for sharing your experience with non copper cables.

[@RandomDude-ni3vt]

@@AndreasSpiess I am glad i can contribute something. I guess the most important thing is to be aware of such cables and not buy them. Unfortunately many sellers on ebay advertise them as CCA Copper. Acually more than just an euphemism for aluminium with a few microns copper on it... BTW. I ordered my bad cable from a well established reseller that mostly has a good reputation and existed alrady long before ebay...

[@varmint243davev7]

Standards exist for a reason, it is best to follow them. I suggest sticking with B when doing your cables and jacks. A is for legacy telco. For Home and small business level gear you generally wont need an x-over anymore. On enterprise gear that may not be the case. YMMV

[@AndreasSpiess]

You are right.

[@gogomac]

Muchas gracias Profesor Andreas. Bendiciones, maravillosa explicación.

[@AndreasSpiess]

You are welcome!

[@bastian433]

Would be really cool if the BLE worked to read out the BLE sensors I have. I really hope someone gets BLE working combined with the ethernet.

[@AndreasSpiess]

Maybe you try. I did not bother too long...

[@peut]

Also, ipv6 does not seem to work on Ethernet with the current Arduino ESP32 software. Not important for most, but good to know maybe.

[@AndreasSpiess]

Thank you for the info. I never tried ipv6 so far.

[@RidingTheAlps15]

IPv6 should work on ESP32 but it seems a bit special to get it working. techtutorialsx.com/2019/10/02/esp32-soft-ap-enabling-ipv6-support/

[@TDG2654]

All basic pre-made cables use 568b, so it's best practice to use it too. It prevents you from making mistakes if you ever put a new connector on one end of a pre-made cable. It'll probably work fine no matter what way you connect it, but it prevents a lot of confusion if you ever need to troubleshoot it. Also, cat6 is capable of 10gbps up to 50 meters

[@AndreasSpiess]

You are right with Cat6 cables. But I would not trust it when it is inside a pipe with other cables and power lines. But I never tested.

[@pd8559]

Ethernet cables don't need to only be used for data. You can send switch signals over Ethernet wires instead of data signaling to a remote microcontroller in your closet or wherever you're setting up your central server room or rack and poe can power anything at the switch point needing power like lighting. You can get creative with your wiring this way. At the terminating points you break out the Ethernet pins used for switching and connect them to the microcontroller GPIO to read switch states for all the switches in the various rooms on just the one microcontroller.

[@RC-EJ]

Stability of the (wired) data connection is very important for (critical) monitoring appliances. (I mis the stability aspect in the argumentation. ) So when stability is important for your non mobile solution, a wired connection has preference. Don’t flip a coin but nowadays always pick T-568b; it’s the current industry “choice”. Questions I have: 1) what are the experiences with current version of ESPhome and the support of wired modules (which ones are the best), 2) can a wired network interface be added to the wireless ESP32 and which hardware interfaces are supported, 3) what are the costs? Thx. Andreas for all your great work!

[@AndreasSpiess]

1. I assume the frameworks do not (yet) support Ethernet. But you have to check. Maybe you find a fork. 2. I mentioned that I did not try wired and wireless together. So I do not know. I Assume all interfaces using the same chips are supported. Pay attention: Some boards do not have POE functionality.

[@keithroberts5946]

I remember having to support an office with BNC ethernet - bus based ethernet - Coax cables to and from every computer joined with BNC T pieces and terminators at every end Lots of fun when any connection came loose as whole network went down (people kicking cables under desks) Twisted pair cables in star configuration so much easier to fault find Things have improved in 25 years

[@AndreasSpiess]

My first VAXstation also used coax cables in Daisy chain configuration...

[@JendaLinda]

I'm still using CAT5E. Gigabit ethernet is good enough for most applications. Also 10Gbit equipment is too expensive. CAT7 is not standardised by TIA/EIA and it's difficult to crimp properly. For future proofing, I would go with CAT6A.

[@AndreasSpiess]

1Gbps is no problem also for me. But if I would cable my house now I would go for Cat7. You can go with shielded 6a which is very similar, I think.

[@tamazerd]

​@@AndreasSpiess The Cat7 standard requires special connectors, GG45, TERA or ARJ45. Only the GG45 is backwards compatible and "downgrades" to Cat6a standard if used as a regular 8P8C connector. No normal RJ45 8P8C is Cat7 rated. The Cat7 standard was set in 2002 and basically got obsolete before it was widely adopted i can guarantee nothing in your home have Cat7 connectors, so it will always downgrade to Cat6A. Therefore Cat6A is what you want to install for 10Gbit, or CAT8.1 if you want to go all the way and still use normal RJ45 8P8C connectors, but 8.1 is only rated for 36m and intended for short runs in data centers.

[@ShALLaX]

Careful with the generalisations here. Cat 7 has shielding and metal plugs that must usually be grounded on both ends. If not, it has the potential to act as a big antenna and interfere with the signal. I’ve seen long runs of ungrounded cat 7 that ended up not being able to carry a signal at all. Also, is cat 7 really necessary for these boards, which presumably don’t support fast throughput? Cat 7 is chunky, so maybe going with a thinner cat 5 or 5e cable would be better for portability/ installation considering the performance wouldn’t be degraded? PoE has several standards, 24v for passive, 48v for 802.3af, at, and bt.

[@AndreasSpiess]

1. For me, Ethernet is an infrastructure which is not only used for ESP32 projects... 2. I covered the topic of POE standards in my POE video I mentioned in this video.

[@ivekuukkeli2156]

I have been told, that RJ-45 and cat cable are originating from AT&T Bell laboratories within the phrase "Premises distribution system". AT&T manufactured those components and cables with the name Systimax. The PDS contains also passive adapters for RS-232 and Token ring and coax video etc. PDS RJ-45 connector 2 center pins are because of RJ-11 phone connection.

[@AndreasSpiess]

Good to know the history of the RJ45 connectors. The first Ethernet cables I know were coax with BNC connectors, if I remember right. In a daisy-chain configuration, not a star.

[@tonyfleming4560]

Great video as usual! Thanks for your great work in every video! I wish you and your family Happy Holidays, Happy New Year and mainly great health and love in your life!

[@AndreasSpiess]

Happy Holidays to you and your family, too!

[@McTroyd]

Nothing beats the reliability and simplicity of a cable! I'm not so sure about power consumption though... you're going from solar and battery (on your other projects) to grid power. Definitely good for reliability, but what about the electric bill?

[@AndreasSpiess]

I do not think you will see it on the electric bill. A battery also costs money...

[@McTroyd]

@@AndreasSpiess True that. Potentially lower maintenance that way too, especially for sensors that run 24/7.

[@user-vn7ce5ig1z]

• 1:50 - Wireless also has the downside of poor (compared to wired) reliability/stability, e.g., disconnections. Really, the only downsides of wired are the inconvenience and slightly higher cost (for the wires). • There doesn't currently seem to be a proper standard for Ethernet/WiFi libraries yet, so you could have all kinds of issues getting it to work depending on the library/libraries used. 😕 I experienced a very specific bug trying to use a wired connection with an Arduino (it was either the EtherShield or EtherCard library), and ended up switching to WiFi instead.

[@AndreasSpiess]

I think I mentioned that this technology is new to the Arduino/ESP32 community. So we will see if we find a lot of problems...

[@UpcycleElectronics]

The cheapest test tool requires an additional ground connection between the transmitter and receiver. This could be as simple as a wire shoved in between the enclosure and test connector. The connectors have a shielding can connected to ground. Also, the RJ45 connectors with connector wire pass through will save a lot of time and headaches.

[@AndreasSpiess]

You are right. I recently bought a pack of such connectors...

[@UpcycleElectronics]

@@AndreasSpiess I have an unrelated question for you. What resources do you know of for finding obscure part documentation? I'm searching for 2 mystery electro mechanical parts that are made by either Foxconn or Hosiden. I know they are used in multiple Nintendo products and are widely available from Shenzhen direct suppliers, but no one lists part numbers. I've looked through dozens of listings, and sent documentation request messages but still waiting on replies. I've searched Mouser Digikey, and Arrow, but they don't have any matches. I would really like to have a datasheet for all parts in my current reverse engineering project, but the USB-C receptacle and a through-board side-mounted momentary push button are crushing my hopes and dreams right now. I think I need to learn what the Asian supply chain is like. I know about LCSC but they seem to target western hobbyists, and didn't have anything. What is the equivalent to Digikey and Mouser in Taiwan, China, and Japan? Any ideas?

[@AndreasSpiess]

I only use Google for my research. Often I find links to other sites in some comments in forums or so.

[@avejst]

Great video as always 👍😊 Thanks for sharing your experience with all of us 😊

[@AndreasSpiess]

Thanks for watching!

[@RidingTheAlps15]

I'm using an Olimex ESP32-Poe-ISO in a room with a switch rack to get temperature and humidity. So I have power for the Board and the sensors. Additional I have a connection to a MQTT Broker via a separate VLAN. It's running for a bit longer than a year now. One advantage is, that, if I have to reboot the board I just deactivate the port and reactivate it, that wasn't necessary though.

[@AndreasSpiess]

Thank you for sharing your experience!

[@laialbert]

I’ve been playing with the ESP32-POE-ISO and a MAX31855 to measure thermocouple temperature, but couldn’t get GPIO Pins 1-5 to work with the MAX31855. Using pins on the other side of the board seemed to work. Have you encountered anything like that?

[@RidingTheAlps15]

@@laialbert No I'm using I2C from the UEXT (GPIO13/16) Ports and GPIO35 for a PIR. Have you tried some other pins?

[@laialbert]

@@RidingTheAlps15 Yes, I managed to get it working using GPIO pins 13, 14, and 15. Just strange that I couldn't get it to work with GPIO pins 1-5. I tried with 4 different boards, so I don't think it's an issue with bad boards.

[@RidingTheAlps15]

@@laialbert Glad that you managed to get it running. I guess I won't touch the GPIO 1-5, when I will use another board.

[@AmauryJacquot]

on ESP32, hardware resources such as I2C are not directly connected to a particular set of pins, but go through a cross-connection system, so you still get hardware i2c support, even when moving it to other pins such as you're showing.

[@AndreasSpiess]

I know and I thought I showed how it can be done.

[@AmauryJacquot]

@@AndreasSpiess guess something got lost in translation, you sounded like "it's a shame, we lose something"

[@AndreasSpiess]

We lose the standard pins which can be a problem if a library does not offer "pin shifting"

[@graealex]

Would have liked to also see the wESP32 in the comparison.

[@AndreasSpiess]

Thank you for your feedback. This was not intended as a comparison between boards. This video, as the title says, is a comparison between wireless and wired. I do not think I would have found significant differences between the two boards other than reading the data sheets.

[@graealex]

@@AndreasSpiess Well, yes, there will be no differences between the wESP32 and the TTGO, as the latter seems to be pretty much a rip off of the former - that's why I would have liked to see the wESP32 included, to at least give credit to the original. The Olimex on the other hand is an original design, and used to have a serious flaw in the form of no galvanic isolation from Ethernet.

[@alomuc]

Hi Andreas, thanks for your great videos, did you drop the numbering of videos some time ago? This was a great help for referring and I‘m missing it. Ciao aus München, Andreas

[@AndreasSpiess]

Always the last about 10 videos doe not carry numbers.

[@wouladjecabrelwen1006]

wow this sweet guy with accent mentioned my country amazing 40 years ago in CAMEROON for the red cross......... i am seating at the first row first column

[@AndreasSpiess]

I lived in Kousseri because of the war in N'Djamena

[@useyourbrain2022]

Very well explained, as always! Thanks for sharing

[@AndreasSpiess]

Glad you liked it!

[@Freestila]

I use some ESP (both types) for various home automation things - sensors etc. I use a cat5e cable for power delivery, poe config on the cable, with 12 volt currently (maybe i add / increase to 24v later). I only use a standard buck converter to go down to 5v for the esp, with of course the option to sue the original 12v for motors if needed. I could use standard ethernet when needed, or any bus protocol on fewer wires (which was my original idea), but the esp are way simplier. I plan to add a dedicated "Node" wifi network somewhat in the future for these, isolated from most of my normal network (except the Home assistant server of course) and no internet connection. But for now, the default wifi does the job. I never intent to use this cables for high speed transmissions (i have a normal cat 7 network for that), and cat5e is enough for even standard video cams. So in my opinion, this is a budget friendly diy solution (which also lets me experiment on power over cat and other things :) ) Sometimes the custom diy is better just because of the fun doing it and the stuff you learn :)

[@AndreasSpiess]

Thank you for sharing your experience!

[@tablatronix]

hah I just bought a LAN8720 and a ENC28J60 eth modules, good timing, came across the olimex boards when I was searching, poe ones look like they will be handy

[@AndreasSpiess]

POE makes the difference for me...

[@scottyanke655]

Great intro to ethernet on the ESP32. My own experience has been that the older CAT-3 cables work perfectly well for IOT devices, because those devices don't have the processing power to utilize the faster ethernet speeds. Even ethernet chips like the Microchip ENC28J60 were fast enough for all IOT projects, and they aren't the fastest!

[@AndreasSpiess]

You are right for IOT only. For me, Ethernet is an neutral infrastructure which has to be independent and long-term.

[@smartassist9700]

Very useful! Thank you. With Poe, are there pins to create “window sensor with magnet” and it send msg to home assistant on raspberry pi server?

[@AndreasSpiess]

PoE has nothing to do with how sensors are attached to the boards.

[@cheaterman49]

2:52 Hahaha, old school - I only learned about modbus from working with actual industrial equipment. The good thing there (and likely not a coincidence, I suspect people had the exact same train of thought as you did) is that modbus is also available over TCP :-)

[@AndreasSpiess]

I did not speak of "modbus" as a protocol here. I talked about the cabling, I think.

[@cheaterman49]

@@AndreasSpiess You are right, you didn't mention it by name, but you did show it on screen alongside RS485 when you said "a few years ago I would probably have thought about using such a bus for my home" :-) To be fair most IoT devices use TCP/IP, it would be impractical for most people to route separate RS485 wiring or to have a modbus server on their local network nowadays :-)

[@murrij]

This is awesome. Good shielded cable and my ham shack has one less possible source of rf interference.

[@AndreasSpiess]

True. Still a lot remaining ;-)

[@LiveSoftworks]

The way I always choose the T-568 standard is A for American and B for British, it does seem to follow based on countries I've seen that West of GMT uses A and East seems to use B

[@AndreasSpiess]

Interesting observation...

[@zeberto1986]

6:04 if you work in telecoms you will quickly find out that it’s not always as simple as it should be connecting legacy devices to new switches, especially when the telco has the switchport set at full duplex and the customer kit at half duplex. Queue complaints of packet loss over the LAN....

[@AndreasSpiess]

Good to know! Thanks.

[@markmaker2488]

I’ve been using olimex poe boards but have found the boards do get quite warm while powered by poe.

[@AndreasSpiess]

Good to know!

[@hcfdewet1]

As always; Not disappointed with the content of your videos!! I do think I'll stick to wireless for now.

[@AndreasSpiess]

No problem. Me too for many projects. Knowing alternatives is always good for me.

[@LarryKapp1]

My cheap ethernet tester had me cutting off the ends of my homemade cable and I tried putting on a new one over and over - until I figured out there was bad solder joint on one of the LED pins in the tester !

[@AndreasSpiess]

Bad luck! I assume now it works and you can trust your cables are the root cause...

[@davepauljones]

Thanks Andreas for your work on this, I too am needing to add ethernet to my project, I purchased a Wiznet W5500, but have not done anything with it yet..

[@AndreasSpiess]

Good choice for Ethernet. I liked the POE capability of this board because it makes cabling very simple.

[@tof22]

7:30 "ESD" stands for "Electro-Static [breakable] device", meaning some components may be destriyed by a static electric (high voltage) discharge while touching it. It is recommanded to pull yourself dow to the ground (thru a 1Mohm resistor or a dedicated wristband) to protect such device while manipulating it. "ESD" sticker doesn't mean there is a risk of high voltage for yourself ;)

[@AndreasSpiess]

I think we both know the sticker. My question: Why is this the first Chinese board with such a sticker and why at the point where the pins have to be protected against all kinds of external signals?

[@SarahKchannel]

But the swiss power plug still rules them all! I am living since 20 years in the world, with many weird connectors - but the swiss one remains my favorite - totally off topic :)

[@AndreasSpiess]

And if you cut the protective earth pin the plug works in many other European countries..

[@SarahKchannel]

@@AndreasSpiess and that from an swiss engineer ;)

[@rfrisbee1]

I think you're getting confused with BS1363 - clearly the superior standard! 😉

[@SarahKchannel]

maybe its in the name of the standard - BS ?? ;)

[@akompsupport]

Met Bob Metcalfe at a Peter Thiel third tier mixer party in Austin, TX. Nice guy.

[@AndreasSpiess]

He must be quite old now...

[@jackhoffman6120]

Another alternative are Ethernet W5100 shields for Arduino AVR platforms. One Arduino Uno plus Ethernet shield (without PoE) is half the cost of the TTGO POE Board. . There are also Ethernet W5100 shields with PoE but then there is no price advantage.

[@AndreasSpiess]

You are right. For me, POE makes the difference because of the cabeling advantage.

[@AndyShrimpton-GaaTech]

Question. If you have say a Pi3 working on WiFi. If you plug an esp board with ethernet as shown in the video into the pi would they be able to talk to one another across the wired connection

[@AndreasSpiess]

Yes. The Pi connects automatically to the Ethernet network if a "valid" cable is plugged in.

[@TecSanento]

We have been using the w5500 spi Ethernet shield using the esp on a wired connection that uses only 1 Pin besides spi :))

[@AndreasSpiess]

:-)

[@TradieTrev]

You can eavesdrop on a wired connection with a throwing star lan tap ;) But we should already be using SSL as you've shared in episode. #232

[@AndreasSpiess]

So far I do not use SSL on my home network, especially not on the wired one.

[@vk3fbab]

Just some extra information. Cat 6 is capable of 10G for channel lengths of 30M or less. You'll find you can probably get further with good Ethernet chipsets. The silicon gets better as time goes on and it can mean that it does better than the minimum spec. The other thing to note is that Cat 6A and above are getting harder to terminate. The requirements for cross talk both near and far mean you need to untwist and unsheath the absolute minimum amount of cable. The other issue with the newer standards is alien crosstalk which comes from other Ethernet cables nearby. You get this is larger commercial installs. Modern Ethernet is like laying RF cables. The signals are in UHF and propagate on the skin of the conductors and can be induced in nearby cables. With the price of CAT 6A and above fibre becomes a really compelling option but no support for POE. I purchased 100M of single mode preterminared indoor cable for 60AUD that is about the cost of CAT6 here. Some cheap media convertors and there is a really safe, reliable and cheap way to connect two buildings together.

[@AndreasSpiess]

You are right with Cat6, but, as you write, I do not like unshielded cables if more than one is in one tube... Concerning non-POE: I would miss this function because it solves some cabling issues...

[@roboman2444]

"cat7 for new projects" May be a bit overkill for an esp*.

[@vgamesx1]

That's honestly an understatement, I mean he even stated in the video it can push about 100mbps at best and even high bandwidth devices like cameras don't usually even need that much, one of the few applications where you would actually max out 100/1000mbps is a NAS.

[@roboman2444]

@@vgamesx1 I think cat7 does a lot better over long distance than cat5e. That might be a reason to use it. Also of course using it between infrastructure... Like routers and switches, where you might actually have gig+ data rates, but not to the esp endpoints.

[@AndreasSpiess]

You are right. I said: For new projects, not for ESP32 projects. For me, Ethernet is an infrastructure which stays for a long time. Its purpose is defined after it is built.

[@talesmaschio]

When designing the offices building for the company I work for, back in 2005, I specified CAT6 cabling for the whole building, almost 400 points. People called me crazy. Today we're happy to have done it.

[@tablatronix]

@@roboman2444 yup the only benefit is guaranteed speed over distance, if you are less than 30 meters, cat 6 24awg should be ok

[@kitecattestecke2303]

IoT accespoint possible? Maybe it is possible to create a wifi with high channel number to stay away from the average home wifi and create a swarm of small Sensor nodes?

[@AndreasSpiess]

I do not think this will be legal

[@Ricard2k]

The yellow sticker is an ESD warning, nothing related to 48V! (Electro Static Discharge) It says that you must be aware of electrostatic, connect you to earth via your wristband and wear your white gloves.

[@AndreasSpiess]

I know that. I meant it more as a joke because this is the first Chinese board with such a sticker. And in an area I think is much less prone for ESD than other oins...

[@AWSb1]

Danke. Dein Video hat mich wieder bestärkt ein kabelgebundenes Smartphone zu bauen. Aber ich würde auf POE in einem smarten Schalter verzichten und dafür einen Switch Chip integrieren, damit man das Ethernet zum nächsten Anschluss/Endgerät durchschleifen könnte.

[@AndreasSpiess]

Viel Vergnügen bei deinem spannenden Projekt! Du hast dir das mobilste Gerät ausgesucht...

[@fredwupkensoppel8949]

Speaking of the Token Ring: In Germany (and probably other german-speaking countries) it's also refered to as "toter Ring" (dead ring) because it pretty much died out after Ethernet became a thing.

[@AndreasSpiess]

I never heard this name :-))

[@brandonallen2372]

The reason both A and B standards exist is to allow for the creation of "crossover" cables. Before the introduction of auto MDI/MDIX and especially it's inclusion into the gigabit ethernet standard a crossover cable was required to connect ethernet switches to each other, or to directly connect two computers to each other. Saying is does not matter is a bit of an oversimplification because slower devices that do not support GigE often do not include audio MDI/MDIX functionality and are still being sold.

[@AndreasSpiess]

Thank you for the info about the connection between type A and B and crossover cables. I think I mentioned the fact that we used crossed cables in the past. I did not have a device in my home for years without autosensing.

[@giorgioboiero]

Andreas, could be possible to use Eth and Wifi at the same time? A practical example is a Eth network analyzer which is controlled by a remote smartphone/tablet connected to the ESP32 as a Wifi access point

[@AndreasSpiess]

I assume it will work because Olimex names one of their boards "Gateway". But I did not try and also do not know how to do it.

[@PatrickVanOosterwijck]

I ran the Espressif Ethernet / WiFi bridge code on my wESP32 and it seemed to work: www.crowdsupply.com/silicognition/wesp32/updates/ethernet-to-wifi-bridge-demo-code

[@AndreasSpiess]

It looks it uses the IDF and not Arduino :-(

[@muctop17]

Would be interesting for a WLANETH gateway with WLAN-long-range !?

[@AndreasSpiess]

I do not know it it would work. But one of the Olimex boards is called "gateway".

[@Ed19601]

Those are available for less than 10 euro

[@JackDaniels-hf5ug]

Thanks for a nice video. Btw, that sticker is not a danger label for your safety as 50V will not kill you but a warning that the device may be damaged due to ESD (electro-static discharge), i.e. the manufacturer can always claim ESD damage bcs mishandling. Honestly, all bare bone electronics are susceptible to ESD so I understand them. It is also very difficult to prove ESD damage.

[@AndreasSpiess]

I know the meaning of the sticker. It should have been a joke because this was the first such sticker on a Chinese board. And in an area which has to be quite good protected...

[@peter2327]

Here are a few questions that I missed somehow? - What way of communication is more sensitive to weather & lightning, wireless or wired? If you are hooking up infrastructure like irrigation or sewage pumps or a decentral heat recovery ventilation system to a control system, you want it to survive a thunderstorm. - If you think in life cycles of infrastructure or real estate, the encryption part of anything wireless holds up very bad - it is like if the switches and sensors diffuse somehow to the outside of the wall over time and become available to the public. Just think of how often SSL and TLS standards had to be cancelled in the last seven years since Snowden. So the question is more: which cable system holds up say 30 years and possibly several generations of NICs? - Are there any experiences about lifetime and failure mode of PoE Systems? Do they black out, brown out and reboot often, or just fry anything attached to the cable, possibly the cable itself? - Which optical buses are available?

[@AndreasSpiess]

I cannot answer your questions. I assume cables can be deployed lighting resistant because they exist everywhere. As mentioned, Ethernet was a very stable standard over the last years and it will stay for a long time.

[@largepimping]

Andreas, the way you worded the part about "crossing" the wires in an ethernet cable may cause some confusion... it's true that you no longer have to create or use *crossover cables* these days because every NIC, switch, hub, etc. is able to negotiate and handle that automatically (unless it was made [probably] 10+ years ago). But when you're crimping your own RJ-45 connections to make a patch cable, the orange or green (depending on whether you're using 568A or B) wires need to "surround" the two blue wires in the middle - meaning all the pairs can't just be wired "straight through." You have to unwind the green (or orange) pair and bring one wire (in effect) across the blue pair, and I can see where people might think of that as "crossing" those wires... and this is where the confusion may come from. However, your info about picking 568A or B and always being consistent for both ends of a given cable is spot-on. So as long as people pick one or the other and follow the standard, they'll be fine.

[@AndreasSpiess]

Sorry for the confusion. I think most people do it like me and look at a drawing when the insert the wires...

[@D-Khaz]

I think this has great potential. I’ve always wanted POE powered IOT devices. Now I just pass 24v over Ethernet cables to my devices for power only. The “cost” of 8 pins is too much, maybe Expressif will build it into the next chip. Also, I’ve heard of complications with Bluetooth and Ethernet, that needs to be resolved.

[@AndreasSpiess]

Ethernet is already built-in into the ESP32 chip :-)

[@jonathanlopez1542]

as always excellent information!!!!

[@AndreasSpiess]

Glad you think so!

[@smartassist9700]

ESP32-POE is OSHW certified Open Source Hardware with UID BG000009 ESP32-PoE is an IoT WIFI/BLE/Ethernet development board with Power-Over-Ethernet feature. The PoE is handled by TPS2375PW chip (Si3402-B in older revisions) that is IEEE 802.3-compliant, including pre-standard (legacy) PoE support. The PoE powering requires at least 37V DC to operate successfully. The board takes power from the Ethernet cable and can be expanded with sensors and actuators. Perfect solution for Internet-of-Things projects. Important notice: ESP32-POE has no galvano isolation from Ethernet's power supply, when you program the board via the micro USB connector the Ethernet cable should be disconnected (if you have power over the Ethernet cable)! Consider using Olimex USB-ISO to protect your computer and board from accidental short circuit. Also consider instead using Olimex ESP32-PoE-ISO board which is insulated. ESP32-POE-EA has module with U.FL connector and external antenna attached. ESP32-POE-IND and ESP32-POE-EA-IND are with industrial grade -40+85C operating temperature.

[@AndreasSpiess]

Thank you for the additional info!

[@giordanogobbo]

Very good video as always! Very good topic , i also searched a lot a way to use ethernet for my smart home and esp32 iot devices, unfortunately in my opinion esp32+ ethernet is not very common (yet) , therefore is still too difficult to gather information and find cheap and good hardware ! Maybe it will change! Fingers crossed ;)

[@AndreasSpiess]

Fingers crossed!

[@ed-jf3xh]

Been using 485 and 422 for years. Very hardy. Top out around 10Mbs but for most things, it's perfectly fine.

[@AndreasSpiess]

It is a good standard and widely used. For the future I find Ethernet more flexible.

[@MatSmithLondon]

Hello Andreas, this subject is very important to me as I build my own home and design my own multisensors. I tried the Olimex, it is quite expensive but unfortunately it did not function well (intermittent issues, difficult to describe). The TTGO seems very annoying! It's too big for in-ceiling sensors, and the features are all wrong. I don't need SD cards, the board spacing doesn't look efficient, and why include a USB-C socket if it only provides power? (A CH340 is sooo cheap now and small as well)... my quest continues! I have been thinking about trying to make my own board for a long time now, like Freetronics but for ESP32 and more "barebones" (small as possible). My end goal is cylindrical multisensors that can be installed into ceilings. 3D printed of course. I think for now I will continue to use Arduino Nano, W5100 breakout, buck converter and PoE injection for this application! Anyway great video, I always enjoy watching your presentations.

[@AndreasSpiess]

Maybe somebody will create such a board if the future when Ethernet becomes more popular...

[@MatSmithLondon]

@@AndreasSpiess I have just seen the WT32-ETH01. It is *not* PoE, but does look interesting because it does have a lot of the features I am looking for: minimally small and ethernet!

[@korneo7636]

Hello Andreas, while tinkering with the olimex poe using the adc, i noticed there is alot of noise on the voltage lines(200KHz) preventing the reading of a stable signal, do you know how to eliminate this noise?

[@AndreasSpiess]

No, I never looked at this aspect. I would ask Olimex if they know the issue.

[@APW030587]

Is there a TTGO T-PCIE review about connectivity using nb-iot or lte-m network?

[@AndreasSpiess]

I do not know. This technology seems to be quite new and still expensive...

[@chriskroon649]

This sounds really nice. My first thoughts was to create a "esp-now" router/gateway. esp-now on wifi and the connection to mqtt for the messages over ethernet. Is this possible? This could enable a lot of possibilities for IoT.

[@AndreasSpiess]

You have to check. I did not try it.

[@ReneKnuvers74rk]

The danger sticker is about electro static dicharge or esd. Not about 48V which is generally counted as safe for skin contact. Note that this is certainly not always a safe voltage. Look into SELV and PELV topics and standard EN 50110 for a better understanding of safe low voltages. ESD is a different cookie.

[@AndreasSpiess]

We both know it. It was more a joke. I never saw such a sticker on a Chinese board. And now I see one in an area which is probably better protected against ESD than every pin on an MCU.

[@M4biz-g3d]

Hi Andreas. Recently I've purchased an "AZDelivery Adattatore Seriale FT232RL da USB a TTL per 3,3V e 5V compatibile con Arduino". In your opinion, may I use it to program the LILYGO TTGO T Internet POE ESP32 WROOM LAN 8720A ? Thanks in advance.

[@AndreasSpiess]

I thought you can program this board using the USB connector (as most other ESP32 boards).

[@TheBekker_]

Worth noting, that if you dont need the speeds of cat7, which you probably don't for small IOT devices, i would just go with cat6, just because the cables are easier to make :) If you buy the cable, well then it doesn't really matter :)

[@AndreasSpiess]

You are right. For me, Ethernet is a long lasting infrastructure and I would not build it just for an ESP board.

[@citadelik]

I have Cat6 cables with POE in most cases run all over the attic of my house for both security camera', RPI running ADSB plane tracking (close to the antenna on the roof), and a jump underground to my workshop. At one time my Internet was WIFI across the lake and the Cat5e cables on the roof to the antenna died after 2 years wherever the sun hit the cables. I've since switched those cables to Cat6 UV rated (and to LTE internet but that's another story). The moral of the story is cat5e indoor cables should not have any Sun hitting them, even a short 2' section to your weatherproof box on the roof. After 2 years of Sun exposure they will just crumble in your hands. I also have ESP32's monitoring the temperatures on my geothermal heat pump water lines (intake and outlet), attic temps (metal roof with radiant barrier and solar vents), and my workshop temps. All of those ESP32's I would have loved to power with POE but instead they reside in closets with wires going into the attic or basement and a AC adapter to power them. Another point I'd like to bring up is often you will use a POE splitter to break the power and Ethernet signal out to your device, such as my RPI that runs ADSB on the roof. The wrong POE switch and splitter will limit you to 100mbit since it will take over a wire pair from Ethernet. However you can get 1gbit rated splitters and switches that will allow full speed Ethernet connections. The splitter supporting full Ethernet speed will state something like: PoE splitter 802.3af compliant gigabit port. Very important if you expect to update a remote RPI or transfer a lot of data.

[@AndreasSpiess]

Thank you for sharing your experience! I covered some POE aspects in the POE video and di not want ot repeat them here...

[@bubbaduck1109]

Will either board pass through power from PoE? Like, could you assign 12v or 16v or 48v to a GPIO?

[@AndreasSpiess]

GPIOs usually only support 3.3 or 5volts. More kills the whole chip

[@sagit0007]

Look like you had some experience with the Niva. :-)

[@AndreasSpiess]

Yes. Good ones!

[@skopyhoTechChannel]

Hello Andreas, Could you please measure increase od power consumption of your router after connecting ESP based ethernet device? Few years ago I considered about building smarthome system on arduinos and ENC28J60 but I did not do it because these ethernet chips had high power consumption. At these days ESP8266 on wifi with deep sleep result in much lower consumption. With tens of connected devices every watt will be noticible on electricity bill.

[@AndreasSpiess]

It is not easy to measure this current and I do not care too much :-(

[@electronic7979]

Nice video. I liked it

[@AndreasSpiess]

Thanks for the visit

[@volvomad]

What 4x4 is that in the Cameroon picture? Looks like a Lada

[@AndreasSpiess]

It was a Lada Niva, you are right.

[@feda9343]

Hello Andreas - I think you have missed to mention galvanic insulation. This is also important for IoT devices that are connected via a longer distance and can increase reliability.

[@AndreasSpiess]

Ethernet cables are always galvanically separated (as Wi-Fi). So I do not see a big difference. Or do I miss something?

[@feda9343]

@@AndreasSpiess I fear that POE mostly runs without galvanic insulation for an easier switching-power-design.

[@AndreasSpiess]

It should not.

[@TD-er]

@@AndreasSpiess It should not indeed, but there are lots of PoE dev boards out there that don't use the correct 10 pin RJ45 headers and/or the rather large PoE isolator transformer blob you see on your boards. Even some commercially available PoE powered devices don't use isolation for their PoE, which is fine if nothing is connected to the outside world from the board, but it is something to keep in mind when people start tinkering with it. For proper isolation of the PoE power supply you still need some rather bulky parts (almost the size of the ethernet header) or if you go smaller you end up using quite expensive parts or maybe only use those low power isolated DC/DC converter modules (often < 1 Watt)

[@peter.stimpel]

Nice. Did you check how much power such boards can deliver to sensors, when powered by PoE? It would be very handy to power the whole sensor solution from that, not just the board.

[@AndreasSpiess]

They specify 1.2A@3.3V. I stopped at 1.5A and it was still at 3.3 volts. So no problem for sensors of any kind, I think.

[@peter.stimpel]

@@AndreasSpiess sounds good, thank you. Really have to think about this PoE stuff, again.

[@TD-er]

It also depends on the used switch. For 802.3af (POE) and 802.3at (POE+) the device "negotiates" with the switch how much power it can draw. The minimum (!!!) of all profiles is 0.44 Watt and depending on the switch it may be able to deliver upto 15 Watt for POE and 30 Watt for POE+ (some even more) But your switch still needs to have the power budget available. If you look at most switches with 4 PoE ports, you will see they have a power supply which is a little less than 60 Watt, so it cannot deliver 4x 15 Watt. Meaning a requested power profile may be denied by the switch. And this rejection may even occur way before the expected 15 Watt on a lot of switches. For typical ESP32 like use cases almost all PoE switches may work just fine and you won't see any strange things happening, except for those really cheap no-name PoE switches. (don't use them for more than 1 or 2 ESP like devices, really don't!)

[@matthewmalpeli]

I'm considering starting a new project that turns a 4mb WROVER ESP32 into a Squeezebox network music receiver, but your struggles with getting BLE to work alongside ethernet has given me reason to pause and reconsider. I was planning to pair it with a waterproof Bluetooth speaker that will hang off the shower faucet. Was it only BLE that was affected or legacy Bluetooth devices too? Something tells me that pulling out a digital audio signal with so few connectors left available will be a bridge too far... Add a DAC to that shipping list and it doesn't look nearly as cost effective as a WROVER and JBL Clip Speaker does...

[@AndreasSpiess]

Maybe you watch my video about ESP32 audio. There you should find an answer.

[@matthewmalpeli]

@@AndreasSpiess Congratulations! You are my new spirit animal 🤭 I wonder how difficult it would be to use an ESP32 as an audio spectrum analyser that could, with an attached microphone, act as a substitute for your smartphone when generating and sending music mode led instructions to network connected smart lights. I recently hosted a children's birthday party during which I had intended to use my music mode enabled lights when music was playing. The problem with that is the necessity of keeping the app running in the foreground of your smartphone with no other apps attempting to connect to the microphone. Try maintaining that when you've got half of all the parents calling you for directions while you're trying to capture moments with your phone's camera. Whoever designed these capabilities has clearly never had to cope that PLUS 15 8-year-olds hopped up on sugar coated almonds 😱

[@AndreasSpiess]

@@matthewmalpeli Maybe your next project? Google finds an audio spectrum analyzer project for your ESP32...

[@soumynonareverse7807]

Great video. I was already interested in the TTGO wESP32 now I am even more interested. Could you show us a setup for remote lights using wired connections (no fancy colored stuff like Philips Hue) that can be integrated into Home Assistant? For a while now, I've been searching for smartlights that can be connected through ethernet. As they don't exist yet, I hope this can be done using the TTGO ESP32. Could you give us an example of this project and how to achieve that?

[@AndreasSpiess]

Maybe an interesting project... It should be possible, but probably not on this channel.

[@soumynonareverse7807]

@@AndreasSpiess why not? Do you atleast know what I should search for to come closer to the solution of this project?

[@AndreasSpiess]

I would cut it into parts and search solutions for each part.

[@soumynonareverse7807]

@@AndreasSpiess you mean search for a wireless project and than search for a way to make if wired?

[@JohnSmith-hx3vo]

about using same wifi functions in code - i didn't quite get it: is it possible to connect such boards to ethernet (using poe) and at the same time disable wifi/bt completely? because having wifi/bt enabled and just not connected/registered with ap - is not quite private in my understanding

[@AndreasSpiess]

It does not connect to your AP if you use this code.

[@JohnSmith-hx3vo]

@@AndreasSpiess But is RF-part of esp32-module enabled?

[@AndreasSpiess]

You decide with your code.