M5Stack Upgrades Its Sensirion-Powered Air Quality Kit, Shifts to the New Stamp-S3A
Improved bundle should offer better Wi-Fi reception for streaming of environmental and air quality sensor data.
Embedded and hobbyist electronics specialist M5Stack has launched a next-generation air quality sensor system, now built around the company's Stamp-S3A Espressif ESP32-S3 microcontroller module and featuring an integrated 1.54" ePaper display.
"Air Quality v1.1 is an integrated low-power air quality monitoring device. Compared to the previous generation, the new version adopts the Stamp-S3A master control, with optimizations and improvements in overall power consumption and Wi-Fi antenna design," the company says of the redesigned hardware. "The factory firmware supports uploading air quality data to the M5Stack Ezdata cloud platform, providing users with a convenient remote data viewing function."
The sensor system, brought to our attention by CNX Software, comes in a case featuring screw, magnetic, and LEGO-compatible mounting options and is built around the M5Stack Stamp-S3A — a compact breadboard-friendly development board featuring the same Espressif ESP32-S3 microcontroller as the earlier Stamp-S3, giving it two 32-bit Tensilica Xtensa LX7 microcontroller cores running at up to 240MHz plus 8MB of on-module flash memory, but with an improved antenna design for better wireless reception.
To this, M5Stack has added the Sensirion SEN55 and SCD40 sensors — delivering high-accuracy readings for particulate matter in PM1.0, PM2.5, PM4, and PM10 measurements, volatile organic compounds (VOCs), temperature, humidity, and carbon dioxide concentration. There's an on-board real-time clock, and as well as the aforementioned firmware for automatically streaming data to a cloud dashboard there's a 1.54" 200×200 ePaper display — designed for a low power draw to get as much life out of the bundled 600mAh battery as possible.
Other features of the bundle include two user-addressable buttons, plus physical power and reset buttons, a passive buzzer for audible alerts, and a Grove-compatible interface for solder-free expansion to additional sensors or other add-on hardware.
The redesigned kit is now available to order on the M5Stack store, priced at $89.90 plus shipping.