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.