You will need this sensor especially you are in busy city where air pollution is high, example beijing. This is particularly true in the case of Malaysia where we might have serious haze condition a result from our neighboring country open forest burning. And for measuring air quality includes the necessity to determine the amount of dust or particulate matter (PM) in the air. Dust is not so bad but really small particles, 2.5µm and 10µm in diameter, can penetrate the lungs causing all sorts of health problems.
PM2.5 Electronic brick is one of the modules in OCTOPUS series to test the PM2.5 concentration . Based on ZH03 laser dust sensors, it can test the dust particle in the air with high consistency and stability. The PWM output and serial port design also make it easily to operate.
- It is compatible to both 3V/5V devices.
- It is compatible to micro:bit or Arduino products.
- It is equipped with standard 3 wires GVS interface.
- It is of high consistency and accuracy with a real time response, the 0.3 μm diameter particle can be recognized.
- With PWM output and serial port supported.
Outlook and Dimension for Installment:
Diagram for Pins Connector:
Introduction to Main Function Modules:
ZH03B sensor is used to test the PM2.5 concentration in the air.
3PIN Standard GVS Electronic Brick Interfaces:
With standard 3PIN electronic brick interfaces, "S" is the output pin for 3.3V PWM signal.
4PIN Serial Output Interfaces:
The output interfaces are used for 3.3V serial signal.
Connect PM2.5 electronic brick module to P1 port on micro:bit with a micro:bit expansion board.
Step 1 Start with Makecode
Open the on-line programming page for makecode.
Step 2 Add Package
Search the key word with "iot", and add the software package called "iot-environment-kit".
Step 3 Programming:
Step 4 Download:
The complete program is below: https://makecode.microbit.org/_4TvKWEihahzh
The value of PM2.5 is scrolling displaying on the 5x5 screen with μg/m3 as a unit.
- Version: V1.2
- Operating Voltage: 3 ~ 5VDC
- Operating Current: < 120mA
- Sleep Current: < 10mA
- Operating Temperature: -10 ~ 50ºC
- Dimension: 50mm x 50mm
- Net Weight: 46.30gram
- 1 x Octopus PM2.5 module
- 1 x 3 pin female to female jumper wire