M5stack PM2.5 Air Quality Module (PMSA003)

Description

The PM2.5 Air Quality Module is a compact air quality detection module for M5Stack projects that need fast particulate data. Built around the PMSA003 sensor, this module calculates suspended particle concentrations in the air and supports air quality monitoring for everyday rooms, classrooms, workshops, and industrial nodes. Its stackable module format keeps integration simple while the PMSA003 sensor provides real-time particulate measurements.

For developers building air quality monitoring systems, the PM2.5 Air Quality Module supplies PM0.3 to PM10 particle information through a practical M5Stack expansion design. The PMSA003 sensor helps collect environmental data for dashboards, instruments, and equipment that reacts to airborne particulate concentration. With DC 5V power and a Core base pinout for SPI, I2C, and power, the module is ready for rapid deployment.

Features

• PM2.5 Air Quality Module for real-time air quality monitoring and particulate data collection.
• Integrated PMSA003 sensor for suspended particle concentration measurement.
• Minimum resolvable particle size of 0.3m with 1g/m mass concentration resolution.
• Measures particle ranges of 0.3-1.0, 1.0-2.5, and 2.5-10m.
• DC 5V power supply for stable environmental measurement nodes.
• Compatible with the M5Stack stacking expansion system and Core base pinout.
• Compact module design for quick installation in monitoring equipment.

Specifications

Applications

• Indoor air quality monitoring for homes, offices, classrooms, and workshops.
• Environmental PM2.5 measurement nodes using the PM2.5 Air Quality Module.
• Industrial particulate monitoring where the PMSA003 sensor provides quick readings.
• IoT dashboards that display real-time particulate concentration and air quality trends.
• Equipment control projects that react to air quality monitoring data.

Product List

• 1 x Module Air Quality
• 1 x Hex Key L-Shape 2.5mm (for M3 screw)
• 2 x M3x14 Screws

Other Content

The documentation lists an Ext Port 2.54-6P interface with 5V, 3V3, GND, SDA, SCL, MOSI, MISO, and SCK connections. On the M5-Bus, the PM2.5 Air Quality Module uses the standard bus layout, including SPI_MOSI on pin 7, SPI_MISO on pin 9, SPI_CLK on pin 11, I2C_SDA on pin 17, I2C_SCL on pin 18, 5V on pin 28, and BAT on pin 30. This pin map helps when the module is integrated into air quality monitoring prototypes.

The PMSA003 sensor is designed for rapid particulate detection, and the module form factor makes the sensor easier to mount with an M5Stack Core. Use the PMSA003 sensor in a position where airflow is representative of the monitored space, and keep the intake area unobstructed during air quality monitoring.

Resources

• Module Air Quality documentation
• Module Air Quality schematic PDF
• PMSA003 datasheet
• Arduino PM25 example

FAQ

What does this module measure?

It measures suspended particles in several size ranges and provides particulate concentration data for air quality monitoring.

Which sensor is used inside the module?

The module uses the PMSA003 sensor, a digital particulate matter concentration sensor for real-time environmental measurement.

What power supply does it require?

The module uses a DC 5V power supply and is designed to work with the M5Stack stacking expansion system.

Can it be used for indoor monitoring?

Yes. It is suitable for indoor air quality monitoring in rooms, classrooms, offices, and workshops.

What should I check when installing it?

Keep the air path clear, use stable 5V power, and mount the module where the PMSA003 sensor can sample representative ambient air.