Abstract
This paper presents a design concept for a realtime home automation system based on Very High Speed Description Language (VHDL) used for programming microcontrollers boards as field-programmable gate array (FPGA). The proposed system has two operational modes. The first one is denoted as a manual mode in which the user can monitor and control the home appliances from any where over the world using the phone calling. The second one is referred to a self- automated mode that makes the user can be monitoring and controlling different household appliances in the home automatically in response to the signals comes from the related sensors. To support the usefulness of the proposed simulation system, a VHDL code for the system is carried out and the reliability of the system is introduced. The proposed simulation system is shown to be a simple, cost effective and flexible that making it suitable and good candidate for the smart home future.