WEEK 5 : CIRCUIT CORRECTION

             Sorry for being late on giving an update for my Final Year Project. After me and my partner have a discussion with our supervisor Miss Norrulhoda, she asked that we need to divide our task into two part which is hardware and software. So after a discussion, i decided to take responsibility on finishing the hardware part for this project and Zaheerudin will take care about the software part.
              Actually there is a problem occurred when we purchasing the component that we need for this project  where we cannot find the IC for Microcontroller which is using PIC 16F628. So after we asked our supervisor, we decided to used another microcontroller of PIC 16F877A and because of this problem, we have to redraw another circuit that compatible with the microcontroller. So after working on for the new circuit this is the result and we still don't now either this circuit is suited with the old one or not.

ultrasonic schematic:-

control and display function schematic:-

Thanks for everyone that help us to complete this redraw process. Now i will give a list of the components used in this new circuit.

RESISTOR(Quantity)

- 2.2K(2)
- 2.7K(2)
- 10K(2)
- 100K(3)
- 1K(5)
- 330R(1)
- 1M(1)
- 4.7K(1)
- 10R(1)

POTENTIOMETER
- 10K min. preset. round

CAPACITORS(Quantity)

- 100n(7)
- 100u(1)

SEMICONDUCTORS(Quantity)

- 1N4007 Silicon Rectifier(3)
- BC 547 npn Transistor(3)
- LM311 Voltage Comparator(1)
- LED red(1), green(1)
- PIC16F877A(1)
- 78L05 voltage regulator(1)

MISCELLANEOUS(Quantity)

- push-to-make switch(1)
- Resonator 4M(1)
- JHD 16x2 LCD(1)
- 40 KHz ultrasonic transducer(transmitter and receiver pair)(1)
- Reset button(1)
- Buzzer(1)

All above is the component used in this circuit. So that mean we have to go back to Jalan Pasar and  buy all this thing. That all for this week. I will give a new update for this project time to time. I hope all the readers can give comments on what we are doing now because seriously i need all that for my learning process. Thank you very much.