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Bare-Bones X10

Discussion in 'Electronic Design' started by Jim Thompson, Nov 18, 2003.

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  1. Jim Thompson

    Jim Thompson Guest

    I need to implement some bare-bones X10 functions... contact closure
    on one side of house closes a relay on the other side.

    Trying to sort out the X10 sites is confusing.

    Lots of expensive/who-needs-it features.

    Can someone point me to "bare-bones" ?


    ...Jim Thompson
  2. Neil

    Neil Guest

    What I have used on occasion are wireless doorbell units that have had the
    guts stripped out of them. Often you can find them for less than $10.00.
    This is a simple pushbutton on transmitter, relay closure on receiver type
    of function.
  3. John

    John Guest

    Repost on comp.home.automation

  4. You can do that with just two parts.

    Check out
  5. joe

    joe Guest

    x10 on ebay is usually cheaper
  6. I'm not sure if this is the cheapest source, but this is the simplest
    X10 transmitter:

    You can use any standard X10 relay module to control line voltage loads.
    Or this one for
    dry contacts:
  7. Mark Jones

    Mark Jones Guest

    In news: (Jim Thompson):

    Hi Jim, I bet you don't want to learn PIC programming, but if you (or your
    son) is handy with uC's, then give this comprehensive writeup a shot:

  8. Jeff

    Jeff Guest

    Comprehensive would be about the right word for that sheet! I don't like
    PIC's (I like AVR's much better), but I have to give Microchip credit for
    some of its data sheets along with some of their other IC's.
  9. Good comment. I was suggesting them as a source of information about
    what is available, but I did not make that clear. I do tend to buy from
    them as well as they are not too high and I have experience with them and
    trust them.
  10. Nukie Poo

    Nukie Poo Guest

    For new X-10 devices, try . I have yet to find
    lower prices anywhere else and install a lot of those types of controls.
  11. Jim Thompson

    Jim Thompson Guest

    Strange coming from me... I buy everything, but how does X10 work? I
    only need to create a switch path thru an un-wireable location... like
    30' of concrete patio.

    ...Jim Thompson
  12. The original X10 superimposes a high frequency carrier-current signal
    on the line voltage. Some of the modules now use RF. Either way, no
    added wiring, but with the carrier current method you need to have
    somewhere to plug in both sides.

    Best regards,
    Spehro Pefhany
  13. the Wiz

    the Wiz Guest

    The "universal" modules have contact
    closure outputs.

    There are plug-in controllers (and
    and wireless controllers (for 16 devices and others

    Wireless controllers need a wireless transceiver

    There is also a plug-in module with an RS-232 interface

    More about me:
    VB3/VB6/NSBasic Palm/C/PowerBasic source code:
    Drivers for Pablo graphics tablet and JamCam cameras:
    johnecarter [email protected] mindspring com. Fix the obvious to reply by email.
  14. Houseslave

    Houseslave Guest

    I bought an X10 alarm system and still can't get all the alarms to trip. I
    tried various troubleshooting methods and devices with no luck. I would go
    with RF devices. I wish I could return the whole system.
  15. Rich Webb

    Rich Webb Guest

    [Followup set to sci.electronics.misc]

    X10 (and any powerline system) has to deal with sites that are served by
    multiple phases. The alarms that aren't tripping may be on a different
    phase than the host box.
  16. It actually sends a signal burst right around the 60 Hz zero crossing
    point. X10 will work across both legs of a single phase 240 V circuit,
    either through the distribution transformer
    secondary, some 240V loads or a special coupling capacitor. You'll need
    a special (or should I say $pecial) repeater to use it between separate
    legs of a three phase system.
  17. Mark Jones

    Mark Jones Guest

    In news:JBjub.30598$ (Jeff):

    It really is a great example of assembly programming and X10 specification.
    Someday, if I ever get these other projects done... I might consider
    building an X10 controller system. Lot of work though, you're right. :)
  18. Guest

    Here's a bare bones RF X-10 setup - everything you
    need for $25.99. See the url

    It contains a keyfob transmitter and a receiver -
    the receiver plugs in to a receptacle. It (the receiver)
    contains a relay controlled 2 prong receptacle into which
    you can plug an incandescant light up to 500 watts,
    or a resistive load up to 15 amps.
  19. Guest

    An X10 controller creates a 121 kHz carrier, superimposed
    on the 60 hZ AC line. At the 60 hZ 0 crossing, the system
    sends pulses of that carrier frequency, containing an
    address and a command. The address tells which remote X10
    device to respond, and the command tells it how to respond.

    An X10 wireless system consists of an RF transmitter, that
    sends a code to an X10 transceiver. The transceiver receives
    the RF, decodes it into address and command, and then operates
    the same way as the controller. In addition, the transceiver
    can act as an X10 remote device, controlling whatever is
    connected to it according the command whenever it is addressed.
    to send pulses out to the X10 devices.
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