Grove - Laser PM2.5 Sensor (HM3301) SKU: 101020613
The Grove - Laser PM2.5 Sensor (HM3301) is a new generation of laser dust detection sensor, which is used
for continuous and real-time detection of dust in the air.
Different from the pumping dust detection sensor, the HM-3301 innovatively uses fan blades to drive air, and
the air flowing through the detection chamber is used as a test sample to perform real-time and continuous
test on dust of different particle sizes in the air.
This module is suitable for dust detectors, intelligent air purifiers, intelligent air conditioners, intelligent
ventilation fans, air quality testing, haze meters, environmental monitoring and relative products and
applications
Features
High sensitivity on dust particles of 0.3 μm or greater
Real-time & continuous detection of dust concentration in the air
Based on laser light scattering technology, readings are accurate, stable, and consistent
Low noise
Ultra-low power consumption
Specification
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Item
Operating Voltage
Operating temperature
Operating humidity
Partical size
Range
(PM2.5 standard value)
Resolution
Stability time
Interface
I2C address
Value
3.3V / 5V
-10½60℃
10%½90%RH (non-condensing)
3 channels-- 2.5µm, 5µm, 10µm
1~500µg/ m
3
(Effective range)
1000 µg/ m
3
(Maximum range)
Concentration: 1µg/ m
3
Counting concentration: 1s/0.1L
30 seconds after power-on
I2C
0x40
Typical applications
Air purifier / air conditioner
Air quality testing equipment
Industrial PM value analysis
Dust and smoke detection and analysis
Real-time PM2.5, PM10, TSP detector
Multichannel particle counter
Environmental testing equipment
Hardware Overview
Pin Out
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Working Principle
The HM-3301 Dust Sensor is based on the advanced Mie scattering theory. When light passes through
particles with quantity same as or larger than wavelength of the light, it will produce light scattering. The
scattered light is concentrated to a highly sensitive photodiode, which is then amplified and analyzed by a
circuit. With specific mathematical model and algorithm, the count concentration and mass concentration of
the dust particles is obtained.
The HM-3301 dust sensor is composed of main components such as a fan, an infrared laser source, a
condensing mirror, a photosensitive tube, a signal amplifying circuit and a signal sorting circuit.
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Platforms Supported
Arduino
Raspberry Pi
BeagleBone
Wio
LinkIt ONE
!!!Caution The platforms mentioned above as supported is/are an indication of the module's software or
theoritical compatibility. We only provide software library or code examples for Arduino platform in most
cases. It is not possible to provide software library / demo code for all possible MCU platforms. Hence, users
have to write their own software library.
Getting Started
Play With Arduino
Hardware
Materials required
Seeeduino V4.2
Base Shield
Grove - Laser PM2.5 Sensor
(HM3301)
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Seeeduino V4.2
Base Shield
Grove - Laser PM2.5 Sensor
(HM3301)
!!!note
1
Please plug the USB cable gently, otherwise you may damage the port. Please use the USB cable with
4 wires inside, the 2 wires cable can't transfer data. If you are not sure about the wire you have, you can click
here
to buy
**2** Each Grove module comes with a Grove cable when you buy. In case you lose
the Grove cable, you can click [here](https://www.seeedstudio.com/Grove-Universal-
4-Pin-Buckled-20cm-Cable-%285-PCs-pack%29-p-936.html) to buy.
Step 1.
Connect the Grove - Laser PM2.5 Sensor (HM3301) to port
I^2^C
of Grove-Base Shield.
Step 2.
Plug Grove - Base Shield into Seeeduino.
Step 3.
Connect Seeeduino to PC via a USB cable.
!!!Note If we don't have Grove Base Shield, We also can directly connect this module to Seeeduino as below.
Seeeduino
GND
5V or 3.3V
SDA
Grove Cable
Black
Red
White
Grove - Laser PM2.5 Sensor (HM3301)
GND
VCC
SDA
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stm32/stm8
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