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For most people, home automation begins and ends with the principle of appliance control. When any household device such as a video or TV is controlled by something other than a button on its front panel or its original remote control, it is deemed somewhat magical and a topic of further inquiry, particularly if the control is done remotely. Lights and toasters don’t need to be controlled by a wall switch, and your TV doesn’t need to be fed signals from your PVR, DVD player, or satellite receiver. Each device has its own idiosyncrasies and control methods, and each has specific functionality that cannot easily be abstracted into any general-purpose form of control interface. However, it is possible to control the vast majority of them using one of two basic methods:
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A Faraday cage works but is not generally practical in a home environment!
You can witness the noise introduced by observing the oscilloscope traces shown at http://jvde.us/x10/x10_cfls.htm .
Inductive loads use magnetic fields and are usually characterized by motors or solenoids.
Resistive loads convert electrical current into other forms of energy, such as heat.
Some devices marked a ZED’s may not be able to work as a ZC or ZR because less functionality is required and so might have been built this way on purpose. The price may be a guide.
C-Bus is used mostly in the United Kingdom and Australia, with the U.S. equivalent known as SquareD Clipsal. This is to avoid confusion with a similar technology called CEBus/EIA-600 utilizing the consumer electronics bus (CEBus).
Provided that they are configured in a networking mode.
The older Power Line Controllers are not compatible with newer Insteon devices.
You might also see this listed as 10.0.0.0/8, with the 8 indicating that the first 8 of 32 binary digits within the address are fixed resulting in a range of over 16 million addresses between 10.0.0.0 through 10.255.255.255. Similarly, you might also see the following in use: 172.16.0.0/12 (providing a range of over 1 million addresses between 172.16.0.0 through 172.31.255.255) and 192.168.0.0/16 (providing a range of 65,536 addresses between 192.168.0.0 through 192.168.255.255).
There are two addresses reserved for the subnet (0) and broadcast (255), thus reducing the total number from 256 to 254.
Some routers can not be configured away from 192.168.1.1, so it’s best to avoid using this number for anything else.
Determine whether this is eth0 or eth1 by either checking the output of dmesg | grep eth or adding the alias eth1 mynetcarddevice to /etc/modules.
Version 10.2 and earlier.
Which, unless the mount is in /etc/fstab, can only be unmounted by using umount directory as root.
- Appliance Control: Making Things Do Stuff
- Chapter 1
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