Progress Report (Engineering Journal)
This show every day that a meeting was held between the members of the group and what was done and who was assigned to a specific task.
Date: 14th May 2003
Choice of Team Members: Persons who will contribute and work together as a team.
Isa Omardeen Project Manager
Shelly Singh
Marisha Rawlins
Neila Maraj Scribe
Common Choice of Project: Power Line Appliance Controller
Basic Operation
A signal is sent via a device (a computer, switch) over the power line to turn on/off an or multiple appliances located any where within the household.
Why this topic?
The project seems to be a very interesting one.
Common understanding among team members what is required for the project.
Team Plan
The team decided to have all which is required for this project, completed to meet al due dates. The final project should be completed by the 13th week of the semester to prevent interruptions to preparation of final exams.
Purpose of the Teams Progress Report
All documentation of diagrams, charts, schematics and explanations for each segment of the project design and requirements would be within this progress report. The progress report should contain all the necessary information to assist us, the team members, to obtain our approval from the instructor, Mr. D. Girdharie, provide an update to the instructor on the operation of the design, and assist in the completion of our final report and website.
Assignments
All team members to research the Power Line Appliance Controller.
Date: 16th May 2003
Team Members Present:
Isa Omardeen
Shelly Singh
Marisha Rawlins
Neila Maraj
What is the Power Line Appliance Controller?
Based on research team members had a better understanding on the operation of the power line appliance controller.
See Figure 2
Requirements for Power Line Appliance Controller
Considerations
1. Choose an appropriate signal frequency
- a value much larger than the 60Hz power line freq
- Not a multiple (harmonic) of 60Hz either
- Maybe 1KHz
Responsibilities
These responsibilities are assigned based on each individuals strong point. All team members are to work together in all of the following, but each is responsible for a particular part:
Acquiring parts, build, test, troubleshoot, verify and assembly each circuit segment of the final working design.
Work Breakdown Structure
|
ID |
Activities |
Resource |
Duration |
Date |
||||||
|
1 |
Topic Acquisition
|
Team |
1 hour |
14th May |
||||||
|
2 |
Topic Approval |
Instructor |
2 days |
14th 16th May |
||||||
|
3 |
Plan / Research
|
Team |
4 weeks
1 week 1 week 1 week |
14th May 4th June |
||||||
|
4 |
Budget Plan
|
Team
Each team member was assigned a different company |
3 days
1 week |
2nd 4th June |
||||||
|
5 |
Design Approval |
Instructor |
1 week |
4th June |
||||||
|
6 |
Select & assign tasks |
Team |
1 day |
16th May |
||||||
|
7 |
Acquiring money |
Team |
1 day |
4th June |
||||||
|
8 |
Progress Report |
Neila |
1 week |
2nd 9th June |
||||||
|
9 |
Engineering Journal |
Neila |
Ongoing |
Ongoing |
||||||
|
9 |
Proposal Report |
Neila |
1 week |
2nd 9th June |
||||||
|
11 |
Proposal Presentation
|
Team
Marisha |
1 week |
2nd 9th June |
||||||
|
12 |
Acquiring parts & materials
|
Isa, Shelly
Isa, Shelly
Shelly |
1 weeks |
4th 11th June |
||||||
|
13 |
Programming |
Marisha |
2 days |
7th 8th June |
||||||
|
14 |
Build |
Isa, Shelly |
4 days |
26th 29th June |
||||||
|
15 |
Test |
Isa, Shelly |
2 weeks |
26th June 9th July |
||||||
|
16 |
Demonstrate |
Team |
1 day |
11th July |
||||||
|
17 |
Final Report |
Neila |
2 week |
26th June 11rd July |
||||||
|
18 |
Final Presentation
|
Team Marisha |
1 week |
3rd 10th July |
||||||
|
19 |
Website |
Neila |
on-going |
To be completed by 3rd July |
Date: 20th May 2003
Team Members Present:
Isa Omardeen
Shelly Singh
Marisha Rawlins
Neila Maraj
Change of Signal Generation
Based on research all Team members had a common agreement on replacing the computer to a keypad, shift register and switches to generate the signal. This seems to be a simpler approach to the project. Further research is to be done based on this aspect.
The basic operation using shift registers is very much similar to that using the computer.
See Figure 3
Date: 21st May 2003
Team Members Present:
Isa Omardeen
Shelly Singh
Marisha Rawlins
Neila Maraj
Approval
Due to the unavailability of a keypad for the shift register, the Mr. D. Girdharie told us to revert to the original design of using the PC to generate the signal.
Research: LM 567 Tone Decoder
This is for the receiver end to choose the particular appliance.
Date: 28th May 2003
Team Members Present:
Isa Omardeen
Shelly Singh
Marisha Rawlins
Neila Maraj
Discussions
Interface to the power line from the transmitter to power line and from the power line to the receiver - Filter circuit. This is an initial filter circuit, which is subject to change based on the other parts of the design.
See Figure 4 & 5
Figure 4 Filter Circuit
Figure 5 Filter Circuit
Meeting with Mr. D. Girdharie
The instructor requested some changes to our power line appliance controller design and directed us to use some of the following devices:
- Relays
- Tone Detector
Assignments:
Based on the teams discussion with the instructor:
Neila Maraj Get information from source based on instructors request.
- Acquire new circuits for design
- Compile parts list.
Isa Omardeen / Shelly Singh In depth research of Tone Decoder LM 567 and other features for the design
Marisha Rawlins Program Flow Chart.
Date: 2nd June 2003
Team Members Present:
Isa Omardeen
Shelly Singh
Marisha Rawlins
Neila Maraj
Discussions:
Based on research done with considerations of the teachers request, Neila was able to obtain new circuit designs. The Tone Detector datasheet was obtained by Isa and Shelly and Marisha completed the flow chart for the program
Considerations to design
For this new design the following considerations were taking into account
- Need to detect the signal of the right frequency and amplitude. We don't want a power surge voltage spike to be wrongly interpreted as a signal.
- Requires control circuitry to flip the state of the appliance (the flip-flop and relays to do this)
- We want to wait a while before we accept another signal (this is to prevent toggling the appliance on and off many times on receiving one signal pulse)
- We want to use one signal pulse to toggle the appliance only once.
- Once the appliance has been toggled after receiving a signal pulse, we want to send out a hand-shake signal onto the power line.
These are the basic steps. It is assumed that a relay is place on the power wire going to the appliance and that the appliance is control by only controlling the power going to it.
For block diagram of the basic operation of the design:
See Figure 6
Figure 6 Basic Block Diagram of Operation
For initial circuits to be used which will be later done on Eagle
See Figures 7, 8, 9, 10, 11, 12, 13, 14, 15
Figure 7 Power Supply for Circuit & ICs
Figure 8 555 timer as Frequency Generator
Figure 9 Counter-to-Multiplexer Configuration from timer
Figure 10 Filter Circuit Propagating Signal to Power Line
Figure 11 Handshaking Circuit
Receiver Configurations
Figure 12 Filter Circuit from Power Line
Figure 13 Signal Propagated from Power Line to select the Appliance
Figure 14 Tone Decoder to Flip Flop to turn on/off the Appliance
Figure 15 Circuitry to Appliance
Parts List
All calculations were done by Neila using the formulae provided by our primary source of information - Electrical Engineering Instructor, Attma Sharma and she also compiled the parts list.
See Parts List
Parts List
Resistor
|
Qty |
Value |
|
7 |
1k |
|
6 |
2.2k |
|
18 |
10k |
|
1 |
2.7k |
|
8 |
100k |
|
3 |
1.6k |
|
7 |
3k |
Capacitor
|
Qty |
Value |
|
10 |
0.001uF |
|
2 300 V rating |
0.001uF |
|
1 |
0.01uF |
|
1 |
100uF |
|
3 |
0.022uF |
|
3 |
0.0047uF |
|
5 |
1uF |
|
5 |
10uF |
Transistor
|
Qty |
Value |
|
7 |
1N2222 |
Relay (1A, 5V)
|
Qty |
Value |
|
7 |
SPDT |
|
3 |
SPST |
Diode
|
Qty |
Value |
|
1 |
Schottky |
|
10 |
1N4004 |
Op-amp
|
Qty |
Value |
|
12 |
741 |
555-Timer
|
Qty |
Value |
|
4 |
LM 565 |
Voltage regulator
|
Qty |
Value |
|
1 |
7805 |
Counter
|
Qty |
Value |
|
1 Texas Instruments |
SN74F161A |
Multiplexer
|
Qty |
Value |
|
1 Texas Instruments |
SN74F253 |
Tone Decoder
|
Qty |
Value |
|
3 |
LM 567 |
D Flip Flop
|
Qty |
Value |
|
3 |
74LS |
IC Holders
Qty - 12
Assignments
Isa Omardeen / Shelly Singh Acquire parts availability and cost.
Marisha Rawlins Schematics for Transmitter, Receiver and Power Supply
Neila Maraj Obtain datasheet for counter, multiplexer and tone decoder, 555 timer.
- Update Progress Report
Date: 4th June 2003
Team Members Present:
Isa Omardeen
Shelly Singh
Marisha Rawlins
Neila Maraj
Discussions with Mr. D. Girdharie
Basic Operation
See Basic Operation Diagram
Transmitter Circuit / Configuration
Connection out of the parallel port to the 555 timer and the schematic, which follow, are the connections required for the transmitter side of the power line appliance line controller design.
Timer
555 timer R1 greater than or equal to 1kΩ to limit current flow during discharge
- R2 much greater than R1 to obtain a 50% duty cycle
Period, T = 0.693(R1 + 2R2) C ≈ 5us
Counter & Multiplexer
The generator frequency from the timer is broken down into four frequencies from the counter. The control signal A & B determines which appliance is to be turned on/off. This is done by setting the multiplexer controls to choose one of the four frequencies. If one of the frequencies for a particular appliance is not chosen or an over voltage occurs, the handshaking circuit is activated where it is indicated by a led. If however, the right frequency is chosen this is propagated down the power line onto the receiver end.
See Transmitter Schematic
Filter
The filter is required to ensure that the signal being sent is not interfered with / by the power line voltage. The frequency of the signal is calculated to be greater that 60Hz, which is the frequency of the power line. We chose 1 KHz. The filter is before the power line from the transmitter circuit and after the power line to the receiver circuit.
Transmitter Schematic
Receiver Circuit / Configuration
The receiver side repeats itself for each appliance. The only thing that changes is that the R's and C's have to be designed (chosen) for the corresponding frequency that controls that appliance. Normally the relay circuit routes signals coming over the power lines in the wall (from Master Control circ) to VRA. The purpose of C1 just after the socket is to block hi V 60Hz power and pass the hi-frequency signals. Note the effective C in this hi-pass filter is really C1/2 since there is also a C1 on the Master Control side of the lines. Then RA-CA acts like a low pass filter with corner freq set to freq that controls the appliance. The op-amp circuit is a buffer to prevent the high pass and low pass RC sections from loading and interfering with each other. The combination of R1-C1-buffer-RA-CA acts like a band-pass filter that selects out and passes only the frequency that controls the appliance. So when that frequency and only that frequency signal is generated by M/C side that signal is passed by only the receiver that has it's band-pass filter corresponding to that frequency. That frequency signal is then detected by the tone decoder, and at the end of the signal pulse, the D-flip-flop switches state and so toggles the relay from on to off or vice versa.
See Receiver Schematic
Receiver Schematic
Power Supply
The power supply supplies power for the circuit and all ICs.
See Power Supply Schematic
Power Supply Schematic
Final Approval
With our new designs and all our explanations to the instructor, we were given the okay to start building our power line appliance controller.
Tasks Completed to date:
Marisha - Schematics
Isa / Shelly - Datasheets
Neila - Research, Communicated with Attma, Proposal Report, Progress Report
Assignments
Shelly Singh Acquire Parts; Build Transmitter & Power Supply Circuit
Isa Omardeen Build Transmitter & Power Supply Circuit
Marisha Rawlins Flow chart for Program & Write program in Assembly Language.
Neila Maraj Update Engineering Journal
- Start organizing information for Final Report & Website.
Date: 9th June 2003
Team Members Present:
Isa Omardeen
Shelly Singh
Marisha Rawlins
Neila Maraj
Task Update:
Neila - Engineering Journal Compiled & Updated
Neila - Progress Report In Progress
Marisha - Assembly Language Flow Chart & Program Completed
See flow chart and program attached
Flow Chart for Program
Assembly Language Program
PAGE 46,132
TITLE Program.asm
;This program is used to controll the multiplexer in the Power Line Appliance Controller
sseg SEGMENT STACK ;establish a stack segment
DW 256 DUP (?) ;this will create a 256 word stack
sseg ENDS
dseg SEGMENT ;establish data segment
menu db "Power Line Appliance Controller",0Ah,0Dh,"$"
menu1 db "Press 1 --> Fan on<>off",0Ah,0Dh,"$"
menu2 db "Press 2 --> CD Player on<>off",0Ah,0Dh,"$"
menu3 db "Press 3 --> Kitchen Lights on<>off",0Ah,0Dh,"$"
menu4 db "Press Esc --> Exit from this menu",0Ah,0Dh,"$"
messfan db "Fan",0Ah,0Dh,"$"
messcd db "CD Player",0Ah,0Dh,"$"
messlights db "Kitchen Lights",0Ah,0Dh,"$"
message1 db "No Key Pressed",0Ah,0Dh, "$"
dseg ENDS
cseg SEGMENT
ASSUME ss:sseg,ds:dseg,cs:cseg
start: mov ax,dseg ;initialize data segment
mov ds,ax
top: call clrscn ;clears the screen
lea dx, menu ;the following lines of code
call display ;displays the
lea dx, menu1 ;lines of the menu
call display
lea dx, menu2
call display
lea dx, menu3
call display
lea dx, menu4
call display
delay1: call delay
call if_key ;checks to see if a key was pressed
mov bl, al ;save a copy of the key pressed
mov al, bl ;retrieves the copy of key pressed
cmp al, 31h ;test to see if key pressed was 1
je fan ;if key was 1 go to fan
mov al, bl ;retrieves the copy of key pressed
cmp al, 32h ;test to see if key pressed was 2
je cd ;if key was 2 go to cd
mov al, bl ;retrieves the copy of key pressed
cmp al, 33h ;test to see if key pressed was 3
je lights ;if key was 3 go to lights
mov al, bl ;retrieves the copy of key pressed
cmp al, 1bh ;test to see if key pressed was Esc
je exit ;if key was Esc go to exit
mov al, bl
cmp al, 0h ;if al=0, no key was pressed
jmp top
fan: lea dx, messfan
call display ;sends out a message to say that the fan was selected
mov al, 1h ;sets pins A=0, B=1, G'=lo
call out ;sends 01 out via the parallel port
call delay ;gives a small delay
jmp top
cd: lea dx, messcd
call display ;sends out a message to say that the CD Player was selected
mov al, 2h ;sets pins A=1, B=0, G'=lo
call out ;sends 10 out via the parallel port
call delay ;gives a small delay
jmp top
lights: lea dx, messlights
call display ;sends out a message to say that the Kitchen Lights were selected
mov al, 3h ;sets pins A=1, B=1, G'=lo
call out ;sends 11 out via the parallel port
call delay
jmp top
exit: mov ax,4c00h ;return to DOS! (bye-bye)
int 21h
;clears the screen
clrscn proc
mov ax, 02h ;option 2 for bios int 10
int 10h
ret
clrscn endp
;display a string to screen
display proc ;dx holds beginning offset of string
mov ah, 09h ;option 9 of bios service int 21
int 21h ;invoke int 21
ret
display endp
;tests to see if a key was pressed
if_key proc
mov ah, 01h
int 16h
jz no_char
mov ah, 0h
int 16h
ret
no_char: mov ax, 0h
ret
if_key endp
;gives a three seconds delay
delay proc
mov ah, 86h ;function for delay
mov cx, 002dh ;delay for 3 seconds or 3000000us
mov dx, 0c6c0h
int 15h ;invoke int 15
ret
delay endp
out proc
mov dx, 378h
out dx, al
ret
out endp
cseg ENDS
END start
Shelly / Isa - Parts Some Acquired; Some Ordered.
Neila - Proposal Report Completed
Marisha - Proposal Presentation In Progress
Organizing of Final Report In Progress
Organizing of Website In Progress
Date: 11th June 2003
Team Members Present:
Isa Omardeen
Shelly Singh
Marisha Rawlins
Neila Maraj
Proposal Presentation
All members participated in the proposal presentation. Saith Auditor Mr. Chamberlain, Mr. D. Girdharie and Mr. T. Hayatali were all present for our proposal presentation.
Update
Proposal Report handed in
Proposal Presentation Completed
Team Decision
All team members agreed that no further work will be done on the project until after midterms.
Date: 25th June 2003
Team Members Present:
Isa Omardeen
Shelly Singh
Marisha Rawlins
Neila Maraj
Deadline 11th July
Now that midterms are over and having a 4 day weekend, all team members planned on having everything completed by the 11th July with all major work being done this weekend. After which there would be a lot of time for testing and trouble shooting.
Assignments
Isa Omardeen / Shelly Singh / Marisha Rawlins Acquire all required parts and start building
Neila Maraj Update Engineering Journal, Progress Report, Website & Final Report.
Date: 3rd July 2003
Team Members Present:
Isa Omardeen
Shelly Singh
Marisha Rawlins
Neila Maraj
Meeting with Mr. D. Girdharie:
In the meeting the team members updated the instructor on the progress of the project based on
· Hardware Isa Omardeen / Shelly Singh
All parts according to part numbers have been acquired except the Schottky diode. Transmitter built on board and is in the testing phase. The receiver still has to be built.
Directed by instructor to build/ test both transmitter and receiver at the same time.
· Software Marisha Rawlins
The program is has been done in assembly language and is the testing phase of by sending messages to be displayed on the screen. Next step to be testing is using the LEDs, the parallel port and the buffer.
· Reports / Website Neila Maraj
All the information based on every segment of the project ahs been organized, its just to be out into a report fashion. After the report is complete the website would be uploaded. Both report and website construction would be done side by side.
The instructor directed us to upload the website on the schools web-server. For the final report, he suggested that we use chapters, with suggestions based on the following sections:
· Background Theory each segment information
· Practical - design circuits & operation
· Implementation actually putting the PLAC on stream
Requirements / Due Date / Task Assigned to:
· Memorandum for meeting today due 4th July Marisha Rawlins
· Gantt chart showing completed and yet to be completed tasks due 4th July Neila Maraj
· Agenda for next Progress meeting Marisha Rawlins
· Updated Engineering Journal Neila Maraj
· Progress Report due 9th July Neila Maraj
· Both transmitter and receiver completely built due 11th July Isa Omardeen, Shelly Singh
Date: 9th July 2003
Team Members Present:
Isa Omardeen
Shelly Singh
Marisha Rawlins
Neila Maraj
Meeting with Mr. D. Girdharie:
Isa / Shelly / Marisha - Transmitter & Receiver built on board and in testing stages.
Neila - Engineering Journal Updated
Neila - Progress Report Completed & Handed in to Instructor
Neila - Draft of Final Report Completed & Handed in to Instructor
Neila - Website Completed; Needs to be uploaded
See Gantt chart for tasks completed and yet to be completed.
Date: 11th July 2003
Team Members Present:
Isa Omardeen
Shelly Singh
Marisha Rawlins
Neila Maraj
Program
Re-written & tested by displaying messages to the screen
Marisha Rawlins & Neila Maraj
See Attached Updated Program
Updated Assembly Program
PAGE 46,132 ;this will format the LIST file for 46 lines x 132 columns
TITLE Template.asm source file for CNT ;your title will appear on list
;this is a sample template to follow, for creating source programs...
;usually a good idea to include a comment header here...
;for CNT, winter semester 2001
sseg SEGMENT STACK ;establish a stack segment
DW 256 DUP (?) ;this will create a 256 word stack
sseg ENDS
dseg SEGMENT ;establish data segment
menu db "Power Line Appliance Controller",0Ah,0Dh,"$"
menu1 db "Press 1 --> Fan on<>off",0Ah,0Dh,"$"
menu2 db "Press 2 --> CD Player on<>off",0Ah,0Dh,"$"
menu3 db "Press 3 --> Kitchen Lights on<>off",0Ah,0Dh,"$"
menu4 db "Press Esc --> Exit from this menu",0Ah,0Dh,"$"
messfan db "Fan",0Ah,0Dh,"$"
messcd db "CD Player",0Ah,0Dh,"$"
messlights db "Kitchen Lights",0Ah,0Dh,"$"
message1 db "No Key Pressed",0Ah,0Dh, "$"
dseg ENDS
cseg SEGMENT
ASSUME ss:sseg,ds:dseg,cs:cseg
start: mov ax,dseg ;initialize data segment
mov ds,ax
top: call clrscn
lea dx, menu
call display
lea dx, menu1
call display
lea dx, menu2
call display
lea dx, menu3
call display
lea dx, menu4
call display
delay1: call delay
call if_key ;checks to see if a key was pressed
mov bl, al ;save a copy of the key pressed
mov al, bl ;retrieves the copy of key pressed
cmp al, 31h ;test to see if key pressed was 1
je fan ;if key was 1 go to fan
mov al, bl ;retrieves the copy of key pressed
cmp al, 32h ;test to see if key pressed was 2
je cd ;if key was 2 go to cd
mov al, bl ;retrieves the copy of key pressed
cmp al, 33h ;test to see if key pressed was 3
je lights ;if key was 3 go to lights
mov al, bl ;retrieves the copy of key pressed
cmp al, 1bh ;test to see if key pressed was Esc
je exit ;if key was Esc go to exit
mov al, bl
cmp al, 0h ;if al=0, no key was pressed
jmp top
fan: lea dx, messfan
call display
call delay
jmp top
cd: lea dx, messcd
call display
call delay
jmp top
lights: lea dx, messlights
call display
call delay
jmp top
exit: mov ax,4c00h ;return to DOS! (bye-bye)
int 21h
;clears the screen
clrscn proc
mov ax, 02h ;option 2 for bios int 10
int 10h
ret
clrscn endp
;display a string to screen
display proc ;dx holds beginning offset of string
mov ah, 09h ;option 9 of bios service int 21
int 21h ;invoke int 21
ret
display endp
;tests to see if a key was pressed
if_key proc
mov ah, 01h
int 16h
jz no_char
mov ah, 0h
int 16h
ret
no_char: mov ax, 0h
ret
if_key endp
;gives a three seconds delay
delay proc
mov ah, 86h ;function for delay
mov cx, 002dh ;delay for 3 seconds or 3000000us
mov dx, 0c6c0h
int 15h ;invoke int 15
ret
delay endp
cseg ENDS
END start
Building
In Progress Isa & Shelly
Date: 16th July 2003
Team Members Present:
Isa Omardeen
Shelly Singh
Marisha Rawlins
Neila Maraj
Discussion on Building
Problems encountered in building. Help and guidance has been given by Instructor, Mr D. Girdharie.
All of the components have been put on the board except the relay and schottky diode. We have been getting problems with finding the pin outs for the relay and how to connect it. After discussions with Mr. Girdharrie we were realized that the relay was not needed on the circuit that is directly attached to the power line since this was for acknowledgement of the signal which is beyond the scope of this project. This eliminated part of the receiver circuit which means that all of the components needed for the receiver is already on the board. We can now begin testing the receiver with a function generator.
Acknowledgement of the transmitted signal would be ignored. This would simplify the receiver circuit. After the project is completed and demonstrated, and the final report is handed in, we would add in the acknowledgment circuit if we have enough time.
The project is currently on schedule. We are currently being kept back since we have no access to labs with oscilloscopes and function generator. This is due to the fact that the lab assistants are attending a training program and cannot open the labs. We are hoping that this would not affect the completion date of our project.
Plugs and wires would need to be obtained so that we can interface the circuits to the power line.
Date: 22nd July 2003
Team Members Present:
Isa Omardeen
Shelly Singh
Marisha Rawlins
Neila Maraj
Project Management Report
Our project Management Instructor, Mr. T. Hyatali has requested that we hand in a Final Project Management Report. Due Date: 29th July, 2003
Due to time constraints and the amount required for this report. Marisha and Neila were assigned to complete this report.
Requirements for Project Management Report
1. Scope Statement
2. Work Break Down Structure
3. Gantt Charts
4. Network Diagram
5. Cash Flow
6. Bill of Materials
7. Detailed Activities List
8. Progress Meetings
9. Progress Report
10. Proposal Report
11. Proposal Presentation
12. Final Presentation
Date: 24th & 25th July 2003
Team Members Present:
Isa Omardeen
Shelly Singh
Marisha Rawlins
Neila Maraj
Building
All team members assisted in testing and troubleshooting segments of the power line appliance controller design. We were assisted by Mr. D. Girdharie who has been of great help.
Date: 26th July 2003
Team Members Present:
Isa Omardeen
Shelly Singh
Marisha Rawlins
Neila Maraj
Saturday
Even though today was a Saturday, all team members were assigned hefty tasks to be completed over this weekend.
Building
Shelly & Isa met at school to work on the testing and troubleshooting the design segments.
Engineering Journal
Neila updated the engineering journal.
Final Report
Neila made all the necessary changes and additions to the report and is completed.
Website
Neila went to San Fernando at an Internet Cafι to upload the website. All the html code has been modified and the site upload is complete. However, some of the fonts and alignment were messed up by the web hosting site.
Website: www.angelfire.com/electronic2/proj379_plac
Project Management Report
Marisha and Neila worked on this and it is completed.
Date: 12th August 2003
Team Members Present:
Isa Omardeen
Shelly Singh
Marisha Rawlins
Neila Maraj
Final Touches
Troubleshooting
Over the past two weeks, Isa and Shelly have been testing and troubleshooting the transmitter and receiver segments with the assistance of Mr. D. Girdharie. The transmitter is working and has been soldered. Also, the receiver is working but will be soldered by 13th August. Due to problems encountered during the troubleshooting phase of each segment, a lot of changes have been made to the original circuitry.
Some changes made:
- Handshaking circuits removed on both the transmitter and receiver segments
- Counter replaced by a JK Flip Flop
These are detailed in the schematics attached.
Schematics
Since the original circuits have been modified, Marisha made the necessary changes to our original schematics.
Draft Report Final Report
The Instructor, Mr. D. Girdharie, directed us to make changes to the draft report based on the changes of the original circuit designs and to meet his standards. The changes were made and completed by Neila.
Website
Since there were changes to the original circuitry, the website needed to be updated. The html code has been modified and will be uploaded to the internet by the end of this week. This will be completed by Neila.
Final Presentation
The final presentation slide show has been completed by Marisha. Each team member has been assigned there specific part for the presentation which is due on the 13th August.
Reports
Since all reports have been updated and completed, they have been printed.
Reports to be handed in on the 13th August:
- Each team member Individual Report
- Engineering Journal
- Project Management Report
- Final Report
Transmitter Schematic
Receiver Schematic