SparkFun has introduced a brand new indoor air high quality sensor, which mixes two Sensirion sensor modules — the SCD41 photoacoustic gasoline sensor and SEN55 specific matter and unstable natural compound sensor — on a single board with Qwiic connectors for solder-free experimentation: the SparkFun Indoor Air High quality Combo Sensor.
“The SparkFun Indoor Air High quality Sensor — SCD41, SEN55 (Qwiic) combines two wonderful indoor air high quality sensors, the SCD41 and SEN55 from Sensirion,” SparkFun’s Chris McCarty explains. “These sensors present a complete indoor air high quality sensor that measures CO₂, Risky Natural Compounds (VOCs), particulate matter (PM1.0, 2.5, 4, and 10), temperature, and relative humidity.”
Designed for protecting a broad vary of components contributing to air high quality, the dual-sensor board makes use of Senisirion’s SCD41 PASens photoacoustic sensor to detect carbon dioxide in a variety of 0-40,000 elements per million (ppm) with a claimed ±40ppm plus 5 per cent accuracy between 400 and 5,000ppm. The sensor additionally gives a full-range relative humidity sensor, good to ±9 proportion factors, and a temperature sensor with ±1.5 diploma accuracy.
That is positioned alongside Sensirion’s SEN55, which measures particulate matter in PM1.0, PM2.5, PM4, and PM10 measurement classes with a variety of 0-1,000μg/m³ and a ±10 per cent accuracy and unstable natural compounds (VOCs) with a variety of 0-1,000ppm and a ±15 per cent device-to-device variation — delivered to the host system as “Index Factors” from 1-500, together with a nitrous oxide (NOx) index measurement. As with the SCD41, the SEN55 additionally contains temperature and humidity sensing — the latter used to enhance the accuracy of VOC sensing.
The board wants solely a Qwiic connection to a bunch microcontroller, dealing with every thing else itself. (📷: SparkFun)
The 2 sensors are offered as separate units on an I2C bus, on a board that has two Qwiic connectors for solderless hookup. “[It] takes care of all of the pesky energy necessities of the SEN55 and SCD41 with onboard DC voltage conversion,” McCarty guarantees, “permitting a easy, single Qwiic connection for energy and communication.”
The SparkFun Indoor Air High quality Combo Sensor is now accessible on the corporate retailer, priced at $124.95 earlier than quantity reductions; extra info is out there within the official hookup information.