SPS30 Particulate sensor~

#define USE_SPS30         // [I2cDriver30] Enable Sensiron SPS30 particle sensor (I2C address 0x69) (+1.7 code)

Device information~

The Sensirion SPS30 is a laser based, fan driven, MCERTS-certified particulate matter (PM) sensor with a I²C and UART interface (datasheet). The Tasmota driver implements the I²C interface.

Mass Concentration Measurements~

The device exposes the following data:

• Volumetric concentration (μg/m³):
• PM1.0, PM2.5, PM4 and PM10
• Number concentration (binning, #/cm³):
• PM0.5, PM1.0, PM2.5, PM4 and PM10
• Typical particle size (μm)

Sampling~

The module has a minimum sampling interval of 1 second in continuous mode (default).

Automatic Cleaning~

It implements an automatic fan cleaning routine, which sets the built-in fan speed to maximum for 10 seconds to clear out the detector chamber and accumulated dust on the fan blades. The default cleaning interval is 1 week of interrupted use, and resetting the sensor power also resets the built-in time counter for this. The current implementation does not support disabling this or setting a custom interval.

Configuration~

The sensor has a 5 pin JST ZHR type connector, with a 1.5mm pitch (connector, datasheet). Pin5 (SEL/Interface Select) must be shorted to Pin4/Ground to enable the I²C interface.

The sensor and fan components require 5V VDD, so a 5V capable board (e.g. Wemos D1) or external power must be supplied.

Finding appropriate connectors/cables for this module are somewhat cumbersome, SparkFun sells them with handy breadboard friendly breakout cables.

Tasmota Settings~

In the Configuration -> Configure Module page assign:

• GPIOx to I2C SDA
• GPIOy to I2C SCL

After saving the board will reboot and the particulate measurements will be displayed on the main page.