Can you suggest an analogue of Arduino Micro with Ethernet and PoE?

Question

Arduino

Hello.
Actually, SABZH. I am looking for some analogue, of the same compact size, but with an Ethernet interface and PoE power.
Power and braininess are not important at all, this scarf will perform a fairly simple function. In short, I want to make each light switch a separate device visible on the network, in which the relay can be controlled either directly from the switch button or remotely via Ethernet. This whole thing will sit in a socket, to which a 220V network and a twisted pair will be connected.
Perhaps tell me some other simpler solution. I will only be grateful! But I'm not a radio engineer, so I'm looking for a simple, compact and aesthetic solution.
Thanks in advance for your replies!

Answer 1

You can attach PoE yourself, just use 4 wires unused for the network, a friend did it.
for the network - ethernet shield.
but in general for your purposes it is better to have one arduino and control the whole world.
at the same time, it is not necessary to pull the switch and the arduino in one place, use the good old "long corridor" scheme in which the light can be turned off from two points.
electrohobby.ru/shema_podklyuch_prohod_vyiklyuch.html
it's true that you need to lead 3 wires to the switch (although it doesn't seem to be a problem for you, since you are going to lead the twisted pair anyway).

Answer 2

It is not clear how this is planned to be organized in the cable sense, because pulling a twisted pair for each switch is a thankless task, the solution with the ESP8266 looks more interesting, for example, here is an excellent article on this topic.

Answer 3

In general, after thinking through all the options, I came to the following two:
We take the BlackSwift modules, which are now Unwired One, group the functions by genre and location and hang the groups on each device. That is, for example, one module controls all the light in one room. The other controls all outlets. Third, all sound, microphones and video surveillance. The fourth controls sensors and ventilation. Etc.
+ There is no need to go deep into programming languages ​​that I don't understand at all
+ Ease of implementation
+ Inside the usual Linux, which means simply huge possibilities for modifying the functionality.
- Expensive
- Large redundancy of resources
We take Esp8266 ESP-07 modules in some ready-made harness (For example, like here or here , but something more suitable for me in terms of tasks and sizes). If they are reflashed, they can be used as an independent device. Therefore, we reflash the Esp8266, solder the Ethernet port to them and poke everywhere - they are cheap. In every socket. Each device is one module. I really haven’t found yet how to directly feed the RJ-45 harness to it, most use the ENC28J60 module in addition, but this is a strong rise in price and an increase in size.
In this option, I like the flexibility of this solution. Since this module has enough brains and outputs to control 1-2 functions. At the same time, WiFi remains in stock, so without departing from a unified technology, there is always the opportunity to connect something remotely (for example, suddenly an aquarium appeared, or to make a tracking-recognizing device on a cat’s neck). This is good.
And Unwired One already centrally manages grouped systems in one cabinet. that is, one controls all the lights in the apartment, the second controls all the markings, the third controls all the sensors, etc. You can even come up with a system of cases and stacking for them, so that it would be convenient to manage and maintain all this.
+ Cheap
+ Easy to implement
+ Low consumption
+ Compact solution
+ A large community around this chip and it is often used in home automation, respectively, the availability of ready-made solutions.
+ - A large number of devices
Also, regarding PoE.
Can't figure out which is better:
1) Put in PoE power and have one hot cabinet at home. Here, however, the loss of current along the cable and the dofiga of excess electricity released into the air are embarrassing. All the same, the weak current is quite sucky transmitted over distances. And although the distances are not large (up to 30 meters), it’s still somehow not so hot.
2) Install small AC-DC converters for each device. In any case, wherever there is a device, there will be a network. But here there are obvious losses in the conversion (for small power supplies, the efficiency is usually around 70%) and the release of excess heat. As well as the risk of fire in the wrong place.
I would be grateful if you comment and suggest other pros and cons.

Answer 4

I would do not on Ethernet, but on WiFi a similar grid. There are also compact scarves - ESP8266 .