United Arab Emirates University

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United Arab Emirates University College of
Engineering Electrical Engineering Department
Graduation Project I
Advisor's Name Dr. Mohamed Abdel- Hafez
Students Name ID Muhra Mubarak
200002121 Jameela Abd-Rabou
200002080 Shaikha Ali AL-Kaabi 200002217 Salma
Abdul-Hameed 199903954
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List of contents
Brief idea about the project. Objectives. Design
Description. Microcontroller RF transceiver USB
video camera. Sensors. Testing and
implementation. Conclusion.
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Brief idea about the project
Mobile sniffer is a wireless controlled robot
that can detect the concentration of certain
gases.
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Objectives
Design and construct a new Mobile sniffer.
Monitor the environment. Specify the Mobile
unit movements. Design and implementation a
complete wireless solution.
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System block diagram
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Microcontroller and Development tools
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Microcontroller
What is a Microprocessor? Why use a
Microprocessor? PIC16F877 Microcontroller. Devel
opment tools.
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Key Features of Different Microcontrollers
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The main features of PIC16F877
Operating voltage. 5 I/ O ports. 10-bit 8 input
channels ADC. Low power consumption. Operating
speed.
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Development tools
LAB-X1. EPIC Programmer. LCD. RS232
communication interface.
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LAB-X1
What is LABX1? Advantage of LABX1.
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EPIC Programmer
What is EPIC programmer? Advantage of EPIC
programmer.
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Liquid Crystal Display (LCD)
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RS232 communication interface and protocol
RS232. MAX 232. DB9 Connector.
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Sensors
Gas Sensor. Temperature Sensor. Light Sensor.
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Gas Sensor
Different types of gas sensor.
What gas sensor was chosen? Why we choose it?
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Temperature Sensor
Types of temperature sensors TMP17. TMP35. LM35.
What temperature sensor was chosen? The
specification of this sensor.
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Light Sensors
Types of light sensors Fast Light
sensor. VT935G. Digital Light sensor. What
temperature sensor was chosen? The specification
of this sensor.
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RF Transceiver and Wireless USB Camera
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RF Transceiver
What is the RF Transceiver? The main advantage of
it.
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Different types of transceivers
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RTcom-IQ
Operating voltage. Small size. Operating
frequency. It has built in antenna.
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USB Wireless Camera
ZT820 Camera
Operating frequency. Operating voltage. Its own
antenna. Small size.
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Mobile Unit Design Specifications
Mechanical Design. Electrical
Design. Graphical User Interface Design.
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Mechanical Design of Mobile Unit
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The first layer in the Mobile unite kit.
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The second layer in the Mobile unit kit
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The third layer of the Mobile unit kit
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Electrical Design of Mobile Unit
Electrical Description
The CPU circuit pin diagram
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The specification chart
The Flow Chart of Design
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The Graphical User Interface Design
The GUI cover page
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The active screen of the GUI
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Testing and Implementations
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Power connection
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LCD connection
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Sensors connection
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The pin diagram
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MAX232 connection
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The whole system pin diagram
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Conclusion

• Recommendations.
• Environment Impact.
• Cost estimation.