WEEK 6

Date : 17 March 2014

Title : Introduction To Our Project

Objective : Project Principle Operation

Content / Producer :

1. Automatic Light Switch is a device helps kids who can't touch the switch of lamp in their bedroom or when using bathroom also other household. For Fire Alarm using Thermistor act as their safety at home that can detect the sign of fire.
2. Thermistor is a main source when it function to detect the early sign of fire while Door Switch to detect when someone open/close the door.
3. We use IC-555 as our processor to oscillate in audio frequency band. The output from pin 3 of IC-555 is fed to speaker( output) through transistor to generate sound.
4. We also used IC CD4017 to drive higher current loads, so it is suit to connect with LEDs with series resistors directly to its outputs. 

Result : Operation of the device

Block Diagram

Conclusion : With block diagram, we clearly know the function of our device and the components. It also easier for us to understand tho operation of this device for each part.