coold8d / GasAlarm

[TODO]

1. Overview detail descriptions
2. Pinouts detail descriptions
3. Assembly module Picture & descriptions
4. How to use BLE shepherd(freebird) detail descriptions
5. Electrical Specifications test value
6. upload Schematic picture

GasAlarm

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Guide Content

1. Overiew
2. Pinouts
3. Assembly
4. [How to use](#How to use)
5. [Electrical Specifications](#Electrical Specifications)
6. Downloads

1. Overview

This module can detect and notify gas level in ppm, if gas level is high, it will trigger buzzer alarm automatically. The gas level will be measured by ADC which is on the BLE.

• Features
  • Detect/Notify gas level in ppm
  • Manual trigger buzzer alarm
  • Auto-trigger alarm when gas level is high

2. Pinouts

• Power Pins:
  • Vcc
  • GND
• AO
  Read Gas data
• Alarm_EN
  Contorl Buzzer

3. Assembly

USB 5V Power module

BLE module

GasAlarm module

4. How to use

• BLE Dongle + BLE shepherd(freebird)
• How to use BLE shepherd(freebird)

5. Electrical Specifications

Parameter	Absolute Maximum Rating	Uints
Power		W
Operating current		A
Vcc to Gound		V
5V to Ground		V

6. Downloads

LM358 Datasheets
MQ2 Datasheets
Schematic