Datasheet

Jon Waddington
70
5.2 Installation/Implementation
To install the Information System into a home, it should be placed near a television in a
similar way to a VCR or set-top box. The power is provided by an external, centre
positive, 5V AC adapter. The television is connected via a phono lead.
When the System is switched on for the first time, the user will be required to set the
time and date by navigating to the settings menu.
X10 modules can be added to the System by entering the desired name on a keyboard if
one is present. Otherwise, the name must consist of numbers, entered by the remote
control.
This installation requires very little effort and time, allowing for stress-free
implementation.
5.3 Cost
The table below shows the projected cost of the components of the Information system
at £110.87. This price includes all the specialised parts, including the XBEE modules, the
AC adapter, the CM12 X10 controller and the relevant ICs. The price does not include any
X10 modules which can be purchased for around £20 [42].
This cost seems reasonable as the closest realistic competitor, the “EasyTouch Panel10”,
has a retail price of £179.00 [43].
The two XBEE modules, at around £20 each, account for approximately 40% of the
overall cost of the Information System. Finding another method of reading the
temperature could greatly decrease the price of manufacturing the Information System.
Another method of decreasing the cost is by transmitting X10 codes directly through the
mains from the Information System, rather than to the CM12. This is due to the cost of
the CM12 X10 controller making up approximately 30% of the whole cost.