By: DESMOND LAI CHENY YIN Student ID: 52931

Supervisor : MR MATTHEW TEOW

GSM ACTIVATED ELR

OBJECTIVEImplement and design the GSM activated ELR.To study the communication between GSM

modem with microcontroller.To study communication of GSM system using

AT command.To study the setting of the residual current.To protect electrical/electronic device from

burning cause by thunder.To reduce the food waste cause by power

tripped.

1. Expend project idea2. Forming flow chat3. Choosing component 4. Learn programming5. Circuit design 6. Testing breadboard 7. PCB design 8. Drilling and soldering 9. Final assemble

Project implementation

1. Expend project idea2. Forming flow chat3. Choosing component 4. Learn programming5. Circuit design 6. Testing breadboard 7. PCB design 8. Drilling and soldering 9. Final assemble

Try getting idea to overcome the problem below

House tripped for few days refrigerator foods forced to be trow

Power tripped, fishes in the aquarium die

Project implementation

1. Expend project idea2. Forming flow chat3. Choosing component 4. Learn programming5. Circuit design 6. Testing breadboard 7. PCB design 8. Drilling and soldering 9. Final assemble

Project implementation

1. Expend project idea2. Forming flow chat3. Choosing component 4. Learn programming5. Circuit design 6. Testing breadboard 7. PCB design 8. Drilling and soldering 9. Final assemble

Do search and choose the most suitable component to be use in this project

Decide programming language

Project implementation

1. Expend project idea2. Forming flow chat3. Choosing component 4. Learn programming5. Circuit design 6. Testing breadboard 7. PCB design 8. Drilling and soldering 9. Final assemble

Learn basic programming using HI-TECH C language

LED blinking Uart communication AT command

Project implementation

1. Expend project idea2. Forming flow chat3. Choosing component 4. Learn programming5. Circuit design 6. Testing breadboard 7. PCB design 8. Drilling and soldering 9. Final assemble

Project implementation

1. Expend project idea2. Forming flow chat3. Choosing component 4. Learn programming5. Circuit design 6. Testing breadboard 7. PCB design 8. Drilling and soldering 9. Final assemble

Test part by part following the schematic in breadboard

Project implementation

1. Expend project idea2. Forming flow chat3. Choosing component 4. Learn programming5. Circuit design 6. Testing breadboard 7. PCB design 8. Drilling and soldering 9. Final assemble

Design pcb board according to the schematic by using EAGLE software and etching is done by manually

Project implementation

1. Expend project idea2. Forming flow chat3. Choosing component 4. Learn programming5. Circuit design 6. Testing breadboard 7. PCB design 8. Drilling and

soldering 9. Final assemble

Drill holes for the fitting of the components after this process follow by solder components into the PCB board

Project implementation

1. Expend project idea2. Forming flow chat3. Choosing component 4. Learn programming5. Circuit design 6. Testing breadboard 7. PCB design 8. Drilling and soldering 9. Final assemble

Assembly all PCB board, transformer and ELR into DB board and casing

The testing of the project was successfully done and its functioning well, the following slides shows the test result steps by steps.

Results And DiscussionTurn on the device

Results And DiscussionWait all 3 led stable

Results And DiscussionPress the ELCB tester so the ELR detected residual current and trip happens

Results And DiscussionStatus LED changed red Sms successful received on the phone

Results And DiscussionReplying the system to reset the ELR

Results And DiscussionELR reset and status message is received and finally the status led change back to green

This project was focused on the implementation of GSM activated ELR was presented successfully. All objective in chapter 1 were achieve. The system is quite stable .