PROGRESS WORK 

The image below is progress work by three (3) of us during week 13

• This is the image of switch button that has been soldered. 

• A 16x2 LCD display an output "FIQ MAL JAHID" and "STOPWATCH"

• The image above shows for both Lap 1 and Lap 2 after switch button is pressed for 3rd times to get the time of each lap.

It is meaning that our mini project is successfully completed by us

PROPOSAL WRITING

Introduction


                                    
                 
                    Figure 1: Analog stopwatch                Figure 2: Digital stopwatch                              

         Stopwatches can be classified into two categories, Type I and Type II. In general, stopwatches are classified as Type I if they have a digital design employing quartz oscillators and electronic circuitry to measure time intervals (Figure 1). Type II stopwatches have an analog design and use mechanical mechanisms to measure time intervals (Figure 2).

                                         

A stopwatch is a handheld timepiece designed to measure the amount of time elapsed from a particular time when it is activated to the time when the piece is deactivated. A stopwatch is controlled by two buttons which is the first button can start and stop the times lap and the second button are to reset the stopwatch to zero. The second button is also functioned to record split time and lap times. When the second button is pressed while the stopwatch is running, the display freezes, allowing the elapsed time to that point to be read, but the watch mechanism continues running to record total elapsed time.

Block diagram

Basic schematic diagram



Bill of materials (BOM)

PURCHASE COMPONENTS OF THE MINI PROJECT

1)  We just ordered the components at Facebook page ''Micro Hobby''. The components include of        89C52 uc kit, IC 89C52, Toolstick850-b-sk and jumper dupont iwres.

You can check at the link below of their facebook page:

https://www.facebook.com/microhobbykit/

The purchase includes 89C52 uC kit, IC 89C52, jumper dupont wires and Toolstick850-b-sk.

2) We have bought some of the components in Jalan Pasar, Kuala Lumpur

The component is

- 16x2 LCD

- Resistor 10k

- Resistor 330

- Switch  button 2 pin

- Strip board

- Crystal 11.0592 MHz

- Capacitor 10 uF

This is the image of total price for the purchases components in Jalan Pasar

So, the total price for these components is RM 24.50

RESEARCH ABOUT THE COMPONENTS USED IN THE MINI PROJECT

List of components:

1. 89C52 uc kit




2. Toolstick850-b-sk




3. Liquid Crystal Display (LCD) 





4. Resistor 





5. Switch button 




6. Strip board

THE SELECTION OF MINI PROJECT TITLES

This week we have given a list of mini project titles. Each group must consists of 2 or 3 person and they need to pick one of the titles given below:-

• Countdown timer with display chimes and setting switches
• keypad door access system with magnetic locks
• Indoor light dimmer
• Digital speedometer-cum-odometer
• Infrared motion detector with strobes lighting
• Speed limiter and alarm for heavy vehicles
• Digital calendar
• Stopwatch with lap times
• School bell timer
• Digital tachometer
• Queue control system (2 counters)
• X-Y plotting table
• Heart rate monitor
• Temperature controlled fan regulator
• Frequency generator
• IR distance meter
• Odometer for bicycle
• Pedometer
• 4 legged walking robot
• Digital speedometer

Each group divided into 3

1. Mohd Jahid Alahnaf bin Zainal (51212114282)

2. Ahmad Afiq bin ahmad Sabri (51212114014)

3. Akmal bin azlan (51211114080)

We have chose "stopwatch with lap times" as our mini project