thanks for the tip
i am weak at assembly language programming ,i need some inputs as to how to interface microcontroller and the other peripherals namely stepper motor
i wud atleast need a circuit schematic of the whole thing befor i proceed
i am thinking of using AT89C51 but i heard that it has got only 3 interrupts and iam planning on usin four LED,phototransistor combination (i ve dropped the idea of using vibration sensors for windows and sound detectors )
also is there anyway to replace stepper motor with normal dc motor by say using an led phototransistor combination which detects when the cam has swung into a particular direction and stops the motor from running
pls help as this is my first electronic project and i dont have a clue as to convert my ideas into actual circuit schematics