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Particulate Matter Sensor SDS011

With this sensor SDS011, it is possible to determine the particulate matter concentration in the air. The sensor outputs two values: the concentration of PM2.5 (particles < 2.5 µm) and PM10 (particles < 10 µm). This sensor is equipped with a small fan to draw in air. Inside, there is a laser that, together with a photodiode, measures the number of particles. The results of the measurements are given in µg/m³ (micrograms per cubic meter).

Particulate Matter Sensor SDS011

Technical Information​

  • Plug-in-and-go senseBox compatible
  • Fast response time of less than 10 seconds
  • High resolution up to 0.3µg/m3
  • Multiple scientific testing of data accuracy

Connection​

uart port

Die Komponente wird am UART Port angeschlossen.

Programmierung (Arduino)​

Software Library​

To program the sensor in Arduino, you need to install the software library sds-dust-sensors-arduino-library.

Code​

In the following code, the values for PM25 and PM10 are output to the serial monitor.

info

The sensor requires a warm-up time of 30 seconds before it outputs measurements.

#include <SPI.h>
#include <Wire.h>

SDS011 my_sds(Serial1) // Serial1 specifies the serial port to which the sensor is connected
float p10, p25;

void setup(){
    // Initialize the standard serial port
    Serial.begin(9600);
    while(!Serial);
    // Initialize the serial port to which our sensor is connected
    Serial1.begin(9600);
    delay(5000);
}

void loop(){
    // Assign the measured particulate matter values to variables
    p10 = my_sds.getPm10();
    p25 = my_sds.getPm25();
    // Print values to the console
    Serial.println("P2.5: " + String(p25));
    Serial.println("P10:  " + String(p10));
    delay(1000);
}

Programming (Blockly)​

In Blockly, the sensor can be read using the following block:

Select the port to which you have connected the sensor and the measurement value from the dropdown menu.

  • PM2.5: Particulate matter fraction below 2.5 µg/m^3
  • PM10: Particulate matter fraction below 10 µg/m^3