Week 2

After completing the sketching of  new block diagram and all the component is listed..in this week..i try to find circuit that can used in this project...to do so, i use internet and also some research at the library..i have to identify the 1 main circuit which is PIC16F877A and sub-circuit that use in this project. Basically  the PIC16F877A is fixed circuit..so we just to identify the port that we want to use in PIC circuit...the problem now is to find the 3 sub-circuit, which is motion sensor, vibration sensor and door sensor circuit...

The voltage regulator circuit also used because to protect PIC and other connected sensors / actuators from over voltage. This is because PIC and all other connected sensors, actuators all support 5V DC only. Over voltage will cause any of the module burn. LM7805 is used to regulate voltage in the system and output 5V DC (max output current: 1000mA). It supports input voltage from 7V DC to 18V DC. If the input voltage is over, the LM7805 will burn or auto shutdown due to overheat. 

Week 1

   
         Continues with the previous works...the problem now is how to fix and combine the X-10 protocol and the PIC16F877A...after i ask people that expert with programmer..i found the solution which is try to avoid use the X-10 protocol...the PIC microcontroller will control directly all the devices in house...since we not use X-10..we recommended to add another application in this project...we suggest to add security system control with PIC...the input will use a keypad that we can key-in the password to open the door.....i had identify the component used to construct the security system...we had to use 3 sensor (motion sensor, vibration sensor and door sensor)... for the program, the visual basic will function as ON/OFF AC devices and as a monitor security system..
        Here is the new block diagram for the add application on this project..

        Until now my partner and i try to fix the project with the new ways..hope this way will help us to finish this project...