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"LAN controller" as a simple on/off switch with an Ethernet interface

rafalll1984 19227 32
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How can I use a LAN controller to switch a boiler on and off through its thermostat circuit, and what is the correct wiring diagram if I want a safer external relay?

Connect the relay contacts of the LAN controller in parallel with the thermostat/controller contacts so either one can switch the heater on, and for safety let the LAN controller drive an external relay (for example on a DIN rail) while only that relay’s contacts switch the heating circuit [#11419979] You do not need a relay module on the LAN controller itself for this setup [#11419979] If you want a simpler or cheaper solution, a modified router with relays/GPIO can also be used as an internet-controlled switch [#11419979][#11421445] Another proven inexpensive option is an Arduino with an ENC28J60 Ethernet module acting as a web server; one user reported a total cost of about 50–70 PLN, support for up to 8 devices, and DS18B20 temperature control [#11444430]
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  • #31 14435802
    Balon14
    Level 12  
    Posts: 44
    Rate: 12
    I have a question.

    What’s the cheapest and simplest way to build a device that checks, for example, whether a router has frozen, and if it has, cuts the power for a moment and then turns it back on?

    Something along the lines of the device checking every few minutes whether it’s possible to log in to the router via Telnet, and if it can’t log in, the device will cut the router’s power and switch it off after a short while?

    Please let me know what I’ll need and how this would be programmed.

    Best regards.
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  • #32 14436123
    kriss032
    Level 21  
    Posts: 624
    Help: 2
    Rate: 82
    The cheapest option is to buy a timer switch from a supermarket – the sort you plug into a socket. You just need to programme it correctly. I’ve had a go at it, but the delay between switching off and on is too long – several minutes. It works, but you’ll lose part of the transmission during the switch’s delay; you’d need more precise, top-of-the-range equipment. You won’t be able to check if the LAN is transmitting with this; you’ll just have to reset it.
  • #33 14447913
    IGS

    Level 22  
    Posts: 456
    Help: 44
    Rate: 61
    The LAN CONTROLLER is exactly the device that meets all the requirements you’ve mentioned
    You’ll find everything here, on the manufacturer’s website: http://tinycontrol.ats.pl/pl/kontroler,lan-controller,167,363
    I have a dozen or so of them in use on my installations; they’re cheap and effective
    Setup is no more difficult than for most network devices, and instructions are provided
    Company Account:
    IGS teletechnika i automatyka obiektów
    Bażyńskiego 32 lok 12, Gdańsk, 80-312 | Tel.: 58 XXX XX XX (Show) | Company Website: www.igs-systemy.pl
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