Week 14

Final week for FYP 1. In this week i should complete my progress report

Week 13

Discuss with my supervisor about progress report.

Week 12

Presentation for my project

Week 11

For this week study how to design circuit by using Proteus and DIPTRACE. The design to determining the workflow, equipment needs, and implementation requirements for a particular process. Process design typically uses a number of tools including flowcharting, process simulation software, and scale models. in this section I have used the diptrace software to design hearing aid circuits. DipTrace is an advanced PCB design software application that consists of 4 modules: PCB Layout with high-class shape-based auto-router and 3D viewer, Schematic Capture, Component and Pattern Editors that allow us to design our own component libraries.

This sofware to design schematic circuit 

This sofware to design circuit on PCB

Week 10

For this week i go to Jalan Pasar.Find and survey the component at Jalan Pasar

Part list component:

Parts List :
R1(Resistor) ------------------ 2.2 K
R2 -------------------------------- 330 K
R3 -------------------------------- 680 ohm
R4 -------------------------------- 33 ohm
R5 -------------------------------- 100 ohm
R6 -------------------------------- 4.7 ohm
R7 -------------------------------- 4.7 ohm
R8 -------------------------------- 220 ohm
C1(Capacitor) ---------------- 0.01 microF
C2 -------------------------------- 100 nF
C3 -------------------------------- 47 microF , 10V
C4 -------------------------------- 10 microF , 10V
C5 -------------------------------- 0.01 microF
C6 -------------------------------- 100 microF , 10V
C7 -------------------------------- 0.1 microF
C8 -------------------------------- 0.1 microF
T1 (Transistor) --------------- C1740 or BC547
IC --------------------------------- TDA 2822M
LED ------------------------------ Genarel red LED
Mic -------------------------------
Earphone ------------------------- 32 ohm

Week 9

For this week, show circuit for project :

Parts List :
R1(Resistor) ------------------ 2.2 K
R2 -------------------------------- 330 K
R3 -------------------------------- 680 ohm
R4 -------------------------------- 33 ohm
R5 -------------------------------- 100 ohm
R6 -------------------------------- 4.7 ohm
R7 -------------------------------- 4.7 ohm
R8 -------------------------------- 220 ohm
C1(Capacitor) ---------------- 0.01 microF
C2 -------------------------------- 100 nF
C3 -------------------------------- 47 microF , 10V
C4 -------------------------------- 10 microF , 10V
C5 -------------------------------- 0.01 microF
C6 -------------------------------- 100 microF , 10V
C7 -------------------------------- 0.1 microF
C8 -------------------------------- 0.1 microF
T1 (Transistor) --------------- C1740 or BC547
IC --------------------------------- TDA 2822M
LED ------------------------------ Genarel red LED
Mic -------------------------------
Earphone ------------------------- 32 ohm

Week 8

Block diagram :

Explanation

The hearing aid has some  parts which is a microphone, an amplifier a filter , a microcontroller, external memory, display and a receiver.These functions have to be housed in a small capsule called the hearing aid. The Microphone, This collects the sound and converts it into electrical impulses. These reproduce the rise and fall of pitch of the sound (high or low) and the intensity (loudness measured in decibels). The Amplifier, this modulates the electrical impulses, makes sounds louder or quieter. It can have an integrated circuit with up to 30 transistors or a combination of circuits. An electronic circuit for amplification 

Research on Components to be used

Objective : 

• Find a suitable component for low-cost hearing aids

For this week, the activities are search components to control the irrigation, detect rain and level of water. 

Descriptions: 

1. LCD 20x4 = Display all operation 

 Conclusion:

• The main components for this project has been research.
•  All this component is available at market.