Final Year Project2(Hardware) Week7

Title: Find suitable car model

Objectives:

• To find a car model that are suitable and can be used into my final year project
• The car model must be at least width=6 inch,length =16inch and high=6 inch
• the car model must can be fit in the main controller circuit and relay circuit

Procedure:

• Go to the supermarket and find the car model that cannot function well with the cheaper price because the purpose of finding this car model are only wants to get their body and chassis not the circuit for the controlling the car.

Microcontroller circuit fit to the model

car model satisfy the specification

• After the car model that satisfy the objectives, next the chassis needs to do some modification to create the 4 door system that can react as real door simulation for a car.

step1

step2

step3

step4

• For the Step1, Draft the pattern for real door car to make it possible to open
• Step2, after draft by using marker, the image of the 4 door are clear already. So, cut the door that followed the line that has been created before this and separated it from plastic chassis.
• The plastic chassis are thin and not strong enough to hold the pressure and load from human hand. So, it must be redesign by using the cardboard paper that are more thick and strong enough to hold the pressure as shown at step3.
• Step4 are shown about the design that are created at cardboard paper that can opened the car doors.
• after Step4, the door that had been cut before this needs to put a gum and to make sure the door are hard enough to hold the human hand pressure.

Result and Analysis:

• The car model are satisfy the objectives of this week because the 4 door can be opened and the car model can open and close the door properly by some modification.
• The importance to find the right car model is to make sure that the car are exactly could be same as real car viewer.

Conclusion:

• The objectives for finding the car model are acheive and the door can be well opened, same as the virtual car system that are simply can tell people about this project purpose due to the real situation while the thief wants to opened the car doors.

Final Year Project 2(Hardware) Week6

Title: Build and test the main circuit (Microcontroller) at bread board

Objectives:

• To construct and tested the main circuit(Microcontroller) at bread board
• To make make sure the coding that been burned at Microcontroller PIC16F887 are fully working

Procedure:

• Construct the circuit at bread board by referring circuit from the Proteus simulation before this

Proteus simulation for main circuit

Main Circuit are constructed

• After the circuit are constructed, the circuit are been tested as shown above.

Result and Analysis:

• For the first circuit construct, there is a problem regarding the connection. The LCD 16x2 are didn't display the output due to the failure of the supposed connection.

LCD failure

• After troubleshoot the lcd, connection are successfully done and the problem are solved
• According the simulation, 1st the LCD will display 'READY'

• Then, it will display 'GSM Security Car'

• When the PB2 is pressed, it will turn on the switch that will located at door car panel, there's 4 switch that connected parallel just like the proteus simulation shown. 

PB2 pressed

The LCD will display 'System On' just after the PB2 is pressed

• After 'System On' it will activated the Door Switches that connected at parallel line. The working scheme for the Door Switches are working when there's one of the switches turn on, the LCD will display 'Sending Message' which means the MicroController will sending message to the GSM system, than the LCD will display 'Warning' that will alerted people that try to stole the car.
• Actually, after the LCD are display 'Sending Message' and 'Warning', the Relay 5vdc will react to cut-off the supply for the Ignition System of the car. But in this testing, the Relay part are not included because of the relay and GSM circuit are build separated from the Main circuit. The Relay 5vdc and GSM will be tested after this session.

Conclusion

• The coding that are burned for the PIC16F887(Microcontroller) are successfully done perfect but after some kind of troubleshoot because of failure to do a correct wiring and some short circuit are produced that caused the Microcontroller cannot perform well.
• It is important to test the main circuit at the bread board to check weather the coding that are burned at Microcontroller are perfectly perform or not.
• After the circuit at bread board are perform well, it will build a confidence level to create a PCB circuit according to the PCB layout that are created by using PCB Wizard before this.

Final Year Project 2(Hardware) Week5

Title: Readjustment the PCB layout

Objectives:

• To make sure that the PCB layout design are suitable with the virtual circuit
• To compromise with the supervisor about the PCB layout design 
• But the component part to build a virtual circuit

Procedure:

• Open the  PCB Wizard software that contain the previous PCB design and rebuild it to make it more compatible and alternate with the virtual circuit. 

Previous PCB design

• From Proteus software, list down all the electronic component that needs to buy at Jalan Pasar

Result and Analysis:

• New PCB design for Microcontroller circuit are form

PCB Wizard: Normal view

PCB Wizard: Real World

The previous PCB design for MicroController circuit are contain little error that have the problem regarding the supplied from VDD and VSS at pinout Microcontroller 11,12,31 and 32 needs to be redesign and the result are shown as the Figure above. The view for real world PCB design are shown as above figure, which means all the component to build the virtual are stated as figure above.

• All regarding electronic component that have been bought from jalan pasar

 Conclusion:

As a conclusion, the PCB design are confirmed by supervisor and the actual PCB circuit must be created after this. All the actual component such as Microcontroller,resistor,switch,boxes,capacitor,PCB board,LCD 16x2 and etc are bought from Jalan Pasar. All the component are completed, the circuit can be tested by the using breadboard first after this. 

Final Year Project 2(Hardware) Week4

Title: Connecting Relay 5vdc with Microcontroller Circuit

Objectives:

• To testing the relay 5vdc with the 12vdc from car battery
• To check either the output frrom Microcontroller can connected to relay and transistor
• To test the function of IC ULN2003A that can replace the output from Microcontroller 5vdc to 12vdc

Procedure:

• Edited the relay part that combined with the transistor TIP 122 and replacing with the ULN2003A

Relay diagram that used TIP 122

• The ULN 2003A testing connection output

ULN2003A output

• The ULN2003A replacing with the TIP122

ULN 2003A connect with relay connection

Result and Analysis:

• The transistor TIP122 are control as a switching to active the relay coil, which means the output controller are connected at TIP 122 and the function are react as a ground to activated the relay coil. But the main problem is the transistor isn't give any feedback because the relay are not turn 'on 'after given output from Microcontroller 5v. 
• The specification to turn 'on' the relay are 5vdc but the MicroController output are only gieven 2.7vdc, so the relay cannot function well. 
• To solved this problem needs to find some devices that can step up/stiwch the voltage to 12vdc. because the 5vdc relay can support until 12vdc.

Relay 12vdc turn on

Conclusion

• The output fro Microcontroller are problem, it supposed to give 5vdc but the actual value when practical session are given the right feedback. So, the output must be step up to 12vdc. Due tho the simulation, the output are succesfully step up by using ULN 2003A. But, dont know about the practical is it valid or not.