By this week, i have do a Chapter 3 which is Methodology. In this chapter, it is include a project component, block diagram, flow chart and gantt chart.

Project Component
1)Arduino Uno
2)Push Button
3)12V power supply
4)Electrochemical Sensor MQ135
5) GPS/GSM

Block Diagram

I have show to my supervisor of my chapter 3, and he has approved it. He also add some important info and points to my chapter 3.