Task: Updating Chapter 3 at the report as chapter 2 has been completed. In Chapter 3, the components and methods will be describing in the project. This chapter covers about block diagram, flowchart of project, the software and list of components and cost estimation this project. This chapter will detail more about each and every component’s function in this project. From the components, the explanation of coding will be explained too. This method shows on how to implement the coding with the component required to build up the project. Block Diagram of the Project The block diagram shows the flow of the project works, started from input, microprocessor and output. At the toggle switch, it has designed with the battery when blind persons only want the know the status of the heart rate via earphone. Once the toggle switch has been turned on, Arduino Uno starts to process the information from the pulse sensor, and then with EasyMP3 Shield. Ea...