■ THIS MONTH’S PROJECTS
An X- 10 Interface . . . . . . . . . . .32
Pulse Speed Timer . . . . . . . . . . 39
TheMagicBox ............. 48
■ LEVEL RATING SYSTEM
To find out the level of difficulty
for each of these projects, turn
to our ratings for the answers.
●●●● . . . . Beginner Level
●●●● . . . . Intermediate Level
●●●● . . . . Advanced Level
●●●● . . . . Professional Level
Last month, we
looked at interfacing
your PC to various
This month, we
are going to dive
I am going to show
you how to use your
PC to control lamps
and appliances using
the X10 protocol.
YOUR WORLD WITH
AN X- 10 INTERFACE
One of the most frustrating
aspects for the PC-to-X10
interface is lack of quality documentation. For an industry that has so much
demand, you would think that the
manufacturers would create some
quality manuals explaining in detail
the protocol that their devices require.
This is just not the case. The instructions for the various interface devices I
tested went from nonexistent to poor.
■ FIGURE 1. ZeusPro Programs.
Most of the technical information I
managed to get my hands on was after
many hours of searching the net. In
many cases, I had to use a lot of guesswork to get the interfaces to work.
I will show you how to use three
different RS-232 interfaces. We will be
looking at the FireCracker (CM17A),
SmartHome PowerLinc (1132B), and
the RCA ActiveHome
■ FIGURE 2
It isn’t necessary
to know how the X10
protocol is transmitted over the power