Week 4: Details Discussion 1

Date: 25/02/2019 - 1/03/2019

This week I had discuss more about our project details with supervisor. Sir Shah were give me a few task about this project. The task given is about to find a few journal that related to this project including the sensor that want to be use to detect sound alarm and type of micro-controller that compatible with this project.

 Here is the finding:
1. Arduino KY-037 Microphone sound sensor module
Application: It is perfect for detecting alarm (high sensitivity)
Specification:
Model: KY-037
Filter: LM393 main chip
Type of mic: Electric condenser microphone
Working voltage: 4vdc-6vdc
Pins: Digital output (DO), Analog output (AO), voltage input and ground
AO: real time output voltage signal of the microphone
DO: if the sound intensity reaches a certain threshold, the output high and low signal produce

 Threshold sensitivity can be adjust via potentiometer on the sensor

2. Vibration sensor module (SW-420)

 Application: Vibration detecting (high sensitivity)
Specifications:
Voltage supply: 3.3vdc-5vdc
Filter: LM393
Pins: Vcc, GND, Digital output (DO)
When no vibration, output logic signal is LOW, led light
The sensitivity also can be adjust
3. Arduino Wemos D1
This is an ESP8266 wifi shield in Arduino UNO form factor board. 
Specifiations:
-Have 11 digital i/o pins
-OTA wireless upload (program)
-5vdc-25vdc, 1A
-typical frequency: 80Mhz

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