This project is about using Intel Edison as a core of the AirQuality Sensor Station.
Edison will use BlueTooth Low Energy to send all sensor data to any app. Your smart phone can subscribe to it and read all services characteristics .

Equipments Used

Intel Edison
Alcohol Gas Sensor - MQ3
Methane Gas Sensor -MQ4
LPG Gas Sensor - MQ6
Carbon Monoxide Sensor - MQ7
Temperature and Humidity Sensor - Spark Fun HTU21D

The project was developed using NodeJS as a server and Noble and Bleno as a BLE central module.

Step 1: Wiring UP All Sensors

MQ4 and MQ6 have the same wiring instructions. MQ3 and MQ7 are different.

Step 2: Setup Edison

Open your terminal and log into your Edison
- screen /dev/xx.usbserial-XXXXXXXX 115200 –L
Configure Your Edison and WiFi
- configure_edison --setup
- configure_edison --wifi
Modify Edison Base-feeds.conf to make Edison's BlueTooth Work
- rfkill unblock bluetooth and systemctl disable bluetooth
- vi /etc/opkg/base-feeds.conf (open and insert only following lines)
  src/gz all http://repo.opkg.net/edison/repo/all
  src/gz edison http://repo.opkg.net/edison/repo/edison
  src/gz core2-32 http://repo.opkg.net/edison/repo/core2-32
- Run: opkg update and opkg install bluez5-dev
- Run: npm install -g async, npm install noble and npm install bleno
- Finish with: rfkill unblock bluetooth and hciconfig hci0 up