# Bill Of Materials

## Bill Of Materials

* [1](http://www.marama.org/images/stories/documents/16%20-%20Gayle%20Hagler,%20Lower%20Cost%20Air%20Measurement%20Technology.pdf)

## Some Theory

### Low Cost Air Quality Sensor

Characteristics

* Sensitivity
* Proven Accuracy
* Location
* Unit? Range of gases, particulates and environmental conditions
* Secure
* Credibility
* Installation and Operation
* Remote Management
* High quality

### Particle Phase

> Larger particles (>0.1 μm)

Possible sensor measurement issues:

* Particle detection capability – transport of particles to sensor, sensor sensitivity
  * Some use a passive means to move air through sensing region; others have a fan.
* Signal translation to concentration estimate

### Gas Phase

> Metal oxide sensors

Possible sensor measurement issues:

* Interfering gases in mixture
* Measurement artifact due to temperature and humidity
* Eventual failure of sensor

> Electrochemical sensors

Possible sensor measurement issues:

* Interfering gases in mixture
* Measurement artifact due to temperature and humidity
* Eventual failure of sensor

> Photoionization sensors

Possible sensor measurement issues:

* Baseline drift
* Eventual failure of sensor based on lamp lifetime.

## Seeed Studio

* **Grove - Gas Sensor(MQ2)**
  * Combustible Gas、Smoke
  * Links
    * <https://www.seeedstudio.com/Grove-Gas-Sensor(MQ2)-p-937.html>
    * <http://iotdk.intel.com/docs/master/upm/classupm_1_1_m_q2.html>
    * <https://github.com/intel-iot-devkit/upm/blob/master/examples/python/mq2.py>
* **Grove - Gas Sensor(MQ5)**
  * LPG, Natural Gas, Town Gas
    * Useful for gas leakage detection
  * Links
    * <https://www.seeedstudio.com/Grove-Gas-Sensor(MQ5)-p-938.html>
    * <http://iotdk.intel.com/docs/master/upm/classupm_1_1_m_q5.html>
    * <https://github.com/intel-iot-devkit/upm/blob/master/examples/python/mq5.py>
* **Grove - Temperature and Humidity Sensor Pro**
  * Temperature
  * Relative Humidity
  * Links
    * <http://wiki.seeed.cc/Grove-Temperature_and_Humidity_Sensor_Pro/>
* **Grove - Gas Sensor(MQ3)**
  * Alcohol vapor
  * Links
    * <https://www.seeedstudio.com/Grove-Gas-Sensor(MQ3)-p-1418.html>
    * <http://iotdk.intel.com/docs/master/upm/classupm_1_1_m_q3.html>
    * <https://github.com/intel-iot-devkit/upm/blob/master/examples/python/mq3.py>
* **Grove - Gas Sensor(MQ9)**
  * Carbon Monoxide, Coal Gas, Liquefied Gas
    * Gas leakage detecting(in home and industry)
  * Links
    * <https://www.seeedstudio.com/Grove-Gas-Sensor(MQ9)-p-1419.html>
    * <http://iotdk.intel.com/docs/master/upm/classupm_1_1_m_q9.html>
    * <https://github.com/intel-iot-devkit/upm/blob/master/examples/python/mq9.py>
* **Smart Dust Sensor - SM-PWM-01A**
  * Links
    * <https://www.seeedstudio.com/Smart-Dust-Sensor-SM-PWM-01A-p-2085.html>
    * <http://iotdk.intel.com/docs/master/upm/classupm_1_1_p_p_d42_n_s.html>
    * <https://github.com/intel-iot-devkit/upm/blob/master/examples/python/ppd42ns.py>
* **Grove - Dust Sensor**
  * Links
    * <https://www.seeedstudio.com/Grove-Dust-Sensor-p-1050.html>
* **Grove - Air Quality Sensor**
  * Links
    * <https://www.seeedstudio.com/Grove-Air-quality-sensor-v1.3-p-2439.html>

## Libelium

* [New Particle Matter – Dust Sensor (PM1 / PM2.5 / PM10)](http://www.libelium.com/particle-matter-dust-sensor-pm1-pm25-pm10-air-quality-smart-cities/)
* [Gases PRO Technical Guide](http://www.libelium.com/downloads/documentation/gases_sensor_board_pro.pdf)

### Waspmpote

* [Homepage](http://www.libelium.com/products/waspmote/)

### Waspmpote Plug and Sense

* [Homepage](http://www.libelium.com/products/plug-sense/)

## Sandbox

* [PM2.5 laser dust sensor SKU:SEN0177](https://www.dfrobot.com/wiki/index.php/PM2.5_laser_dust_sensor_SKU:SEN0177)
* [Particle Io Community Dust Sensor](https://community.particle.io/t/dust-sensor-pms-5003-6003-7003/24221)
* Dx
