Grove Dust Sensor
This Dust Sensor gives a good indication of the air quality in an environment by measuring the dust concentration. The Particulate Matter level (PM level) in the air is measured by counting the Low Pulse Occupancy time (LPO time) in given time unit. LPO time is proportional to PM concentration. This sensor can provide reliable data for air purifier systems; it is responsive to PM of diameter 1μm.
!!!note
This sensor uses counting method to measure dust concentration, not weighing method, and the unit is pcs/L or pcs/0.01cf.
Please pay attention to the warnings listed here.
Features
Stable and sensitive detection of not only cigarette smoke but also house dust which are indoor asthma triggers.
Air is self-aspirated with the current of air generation mechanism with a built-in heater.
Easy maintenance. High sensitivity lasts long term.
Dual output for the particle size over 1 micron and 2.5 micron (approx).
More compact and lighter, and easy installation.
!!!note
In the latest version, output Hi Voltage is changed from 4.0V to 4.5V.
!!!Tip More details about Grove modules please refer to Grove System
Specification
Item | Norm | Unit |
VCC | 4.75~5.75 | V |
Standby Current Supply | 90 | mA |
Detectable range of concentration | 0~28,000 / 0 ~ 8000 | pcs/liter / pcs/0.01cf |
Operating Temperature Range | 0~45 | °C |
Output Method | Negative Logic, Digital output, High: over 4.0V(Rev.2), Low: under 0.7V | - |
Detecting the particle diameter | >1 | μm |
Dimensions | 59(W) × 45(H) × 22(D) | mm |
Humidity Range | 95% rh or less | - |
Platforms Supported
Application Ideas
Air Purifier
Air Quality Monitor
Air Conditioner
Ventilator
Getting Started
Cautions
Please keep it upright.
3 min preheat time is required while using for the first time.
Arbitrary operation may cause unexpected damage.
Following widgets (red rectangle marked) is used only for the factory setting. Please DO NOT change the default configuration.
Connection
Here is a demo to show how to obtain PM concentration data from this Grove - Dust Sensor.
Plug the dust sensor into digital port D8 on the Grove - Base Shield. It can only be D8 because the operation of this sensor involves sampling. This function only can be achieved by D8, the input capturing pin of ATmega328P, on Arduino/Seeeduino.
Arduino UNO | Dust Sensor Pin | Cable Color |
5V | Pin 3 | Red wire |
GND | Pin 1 | Black wire |
D8 | Pin 4 | Yellow wire |
Also, you can connect Grove - Dust sensor to Arduino UNO without Base Shield.
Software
Copy and paste the demo code below to a new Arduino sketch.
In this program, the Seeeduino samples the total duration of "logic low" in 30s, and this duration illustrates the dust density of environment. Open Serial Monitor, we can get air quality's value detected by sensor from PC's serial port.
"lowpulseoccupancy" represents the Low Pulse Occupancy Time(LPO Time) detected in given 30s. Its unit is microseconds.
"ratio" reflects on which level LPO Time takes up the whole sample time.
Here is a graph of the dust concentration measured in office :
We can see the concentration of dust is very low in the evening, but it is higher in the afternoon. A threshold can be set when the concentration is above a value. Also, if you want to set the sensor more sensitive you can add a fan on the sensor, and add a 10kΩ resistor between the Pin5 and Ground. More information please visit the blog of A.J.
Related Projects
If you want to make some awesome projects by Grove - Dust Sensor, here is a project for reference.
Air Quality Box
This section an IoT demo made by Seeeduino and Grove.
More attention is being paid to the environmental air quality nowadays because the tiny particles in the air around can badly endanger people’s health. We always get the information of environment from our government department. But it’s the average value of the whole city/section. It can not reflect the environment around you accurately.
Resources
[Datasheet] Grove-Dust_sensor datasheet
[Demo]Building a low-cost networked PM2.5 monitor -- Made by A.J.
[Demo] Measuring the Pickle Jr. – a modified PPD42 with an attached fan. -- Made by A.J.
[Demo] Testing the Shinyei PPD42NS -- Made by darell tan
[Demo] Air Quality Monitoring -- Made by Chris Nafis
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