FYP Sem II : Week 5

Title of Activity:

Testing the circuit using breadboard

Analysis:

In order to ensure that the components that I bought are functioning or not, I do the testing on the breadboard. Basically, I test the circuit of power supply. In this project, I need 5V and 12V as the power supply of certain device and components. 12V can be obtain from the 12V adapter while 5V is obtain by constructing the voltage regulator module.

This the voltage regulator module circuit that I assembled on the breadboard.

 

By using 9V battery, I test it and measure the output value at output leg of LM7805 by using multimeter. The value of output voltage is nearly 5V which is 4.8V. Hence, it can be used to operate most of components such as microcontroller, LED and so on.

Other than that, I do the basic testing for each of the LED to ensure whether it is functioning or not. It will be on when it was connected to the circuit that I've been constructing before.

Conclusion:

All the tested component is functioning well and the output produces are same as the theory.

FYP Sem II : Week 4

Title of Activity:

Buying the components or devices needed & Studying of each of them.

Analysis:

Here are pictures and description that I obtained from some of the main components that I bought:

Adapter 12V

It is a connector that accepts voltage from power supply and stepped down to 12Vdc.

Voltage Regulator LM7805

It  is used to regulate voltage in the system .The voltage regulator module is used to protect PIC and other connected sensors from over voltage. This is because PIC and all other connected sensors, actuators all support 5V DC only.

PIC16F877A Microcontroller

It is used to control the whole system. It can read/write program for more than 100,000 times because of using flash technology.It has 40 pins but only 33 I/O pins can be set as digital input or digital output.

IR Sensor

It is an analog infrared proximity sensor. It can be used to detect obstacles. This sensor has a LED that emits infrared light. Infrared light has the interesting property that it bounces on obstacles.

RS-232 Level Converter

Almost all digital devices require either TTL or CMOS logic levels. Therefore the first step to connecting a device to the RS-232 port is to transform the RS-232 levels back into 0 and 5 Volts and this can be done by RS-232 Level Converters. 

Electrolytic Capacitor

It conduct AC current and block  DC current, allowing AC signals to be transferred while blocking DC power and also storing energy.

RFID Reader

There are 3 wires used to control the RFID reader. Orange color wire used to enable/disable the RFID reader. Green and white color wires are signal line.

LED

It act as an indicator. It has positive and negative legs that is needed to be identified before placing in the circuit.

Conclusion:

All the pictures are the component that I already bought. After studying each of them, I started to understand their specification.

FYP Sem II : Week 3

Title of Activity:

New Block Diagram 

Analysis:

After changing the automatic component from keypad into RFID, the block diagram is now a little bit different from what I had proposed. Now, it will look like this.

The input part will be:

1. 12V adapter that connected to the main power supply and will be stepped down to 5V by using voltage regulator.

    2.  RFID reader that is used to detect ID of student.

    3.  IR sensor that is used to detect document or assignment into the "Automatic Document Receiver".

    4.  Reset button as the component to reset the whole PIC circuit.

The output part will be:

1. LED, Yellow, Red, Green and Blue that are used to indicate the input part of IR sensor, RFID reader   and On/Off function. 

    2.  Voltage level converter MAX23 will convert signal to be compatible with computer.

Conclusion:

This block diagram will be used to explain how the circuit will be functioning.

FYP Sem II : Week 2

Title Of Activity:

Research on schematic circuit

Content / Analysis:

1. Firstly, I found one circuit from the website "www.edaboard.com" where there are discussions on how to interface thermal printer to the PIC16F877A.

2. It is too difficult for me to buy new or secondhand thermal printer. Hence, I decided to use printer that already had in the room to replace it.

3. The circuit that has been found is changed according to my specification of project. Hence, it was look like below.

Conclusion:

This is the circuit that will be used to run my project.

FYP Sem II : Week 1

Title of Activity:

Research on automatic component to represent student's identification.

Content / Analysis:

During the presentation on FYP Degree Sem 1, I've been advised from one of the assessor to change the use of keypad and LCD. Instead of key in ID number manually by using keypad, the assessor prefer to change it to the automatic device or component. The purpose of changing is to make the way of project's operation match with the title.

On this week, I've been searching the suitable method to make student's identification become automatic. Hence, I found by using bar-code or RFID (Radio Frequency Identification) is the most appropriate way.

Basically, the idea come from book drop or return station station that has been implemented in library management system and electronic cash register in the supermarket. I've been interviewing one of the senior from UniKL IPROM regarding her FYP entitle Smart Book Drop Station. She was suggesting for me to use RFID as the component.

Conclusion:
I made my decision to change keypad to RFID.