Little Bird
PM2.5 Air Quality Kit (PMSA003 + SHT20)
The PM2.5 Air Quality Kit combines a PMSA003 laser particulate sensor with an SHT20 temperature and humidity sensor in a single M5Stack-compatible module. It...
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The PM2.5 Air Quality Kit combines a PMSA003 laser particulate sensor with an SHT20 temperature and humidity sensor in a single M5Stack-compatible module. It measures ambient particulate concentration, temperature, and humidity — making it ideal for air quality monitoring deployments.
The PMSA003 uses laser scattering to continuously measure suspended particle concentrations with a minimum resolution of 0.3 µm, outputting data via UART. The SHT20 provides fully calibrated digital temperature and humidity readings over I2C. The kit includes an M5Stack Basic core unit for a complete, ready-to-use monitoring system.
PMSA003 Specifications
- Method – Laser scattering
- Minimum Particle Size – 0.3 µm
- Output – Digital UART
- Response – Real-time, continuous acquisition
- Zero False Alarm Rate
- Body Height – 12mm (suitable for portable devices)
SHT20 Specifications
- Measurements – Temperature and humidity
- Output – Digital I2C
- Fully Calibrated
- Low Power Consumption
Kit Features
- Power – DC 5V via USB Type-C
- Compatibility – M5Stack stackable and extension system
- Pedestal – SPI/I2C/Power pin breakout with proto board
Ideal For
- Indoor and outdoor air quality monitoring
- Environmental sensor networks
- Citizen science air quality projects
- Smart home environmental monitoring
Package Contents
- 1× PM2.5 sensor base (PMSA003 + SHT20)
- 1× M5Stack Basic core
- 1× M5Core pedestal
- 1× USB Type-C cable
- 2× M3 screws
Resources
Jargon buster
Plain-language definitions for the technical terms used above.
- breakout
- A breakout board carries a small or fine-pitched component and brings its connections out to standard, breadboard- and header-friendly pins. Describing a part as a breakout means it can be wired into a project without soldering directly to the component's tiny contacts.
- DC
- DC means direct current, where electricity flows in one constant direction, as supplied by batteries, USB ports and many plug-pack power supplies. When a product specifies DC, it runs from a DC supply rather than mains AC, so you need to provide the correct voltage and polarity.
- I2C
- I2C is a two-wire communication bus used by many sensors and small modules. It matters because several I2C devices can share the same two wires, but each device needs a compatible address and your controller must support I2C.
- PM2.5
- PM2.5 refers to airborne particles with a diameter of about 2.5 micrometres or smaller. It is a common air-quality measurement because these fine particles can be breathed deep into the lungs.
- SPI
- A fast serial communication bus often used for displays, memory cards, and sensors. It matters because SPI devices need specific pins for clock and data, plus a separate chip-select line for each device.
- Type-C
- USB Type-C (USB-C) is a small, reversible USB connector used for charging, power, and data transfer on many modern devices. A Type-C port or plug indicates the cable and charger connection needed to power, charge, or communicate with a device.
- UART
- UART is a simple asynchronous serial interface that sends data over separate transmit and receive wires, usually labelled TX and RX, with both ends set to the same baud rate. It is a common way for microcontrollers and other serial devices to exchange data.
- USB Type-C
- USB Type-C is a small, reversible USB connector used for power, data and sometimes video on many modern devices. The connector itself does not guarantee a particular speed or voltage, so check the supported USB version, data rate and whether it carries more than 5V via USB Power Delivery.
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