Octopus PM2.5 PM10 Detector Sensor Module User Guide

Octopus PM2.5 PM10 Detector Sensor Module User Guide


PM 2.5 sensor is a professional sensor for detecting PM2.5 and PM10. It is used for testing the air quality. It has good consistency and high accuracy,which can be accurate to a single unit of digit.

Shipping List

1 x Octopus PM2.5 PM10 Detector Sensor Module   




  • Accuracy:Laser detection, stable and consistent.
  • Fast Response: Less than 10 seconds' response to the occasion change.
  • Easy to Integrate:Serial port output, with a built-in fan.
  • High resolution:Enable to recognise particles with diameters smaller to 0.3um.
  • Working Voltage???V
  • Max Working Current???00mA
  • Sleep Current???mA
  • Working Temperature???20-50???/li>
  • Data Output Time??? second
  • Serial Port Data Sending Frequency:1 time per second
  • Relative Tolerance???0%
  • Product Dimension???1x70x23mm



  • Available to be applied to PM2.5 detectors, air purifiers, filtering systems, etc..


Pins Instruction


Pin Name Note
2 1um >0.3um particle intensity, PWM output
3 5V 5V power input
4 25um >2.5um particle intensity, PWM output
5 GND Ground
6 RXD Serial port receive RX
7 TXD Serial port send TX




Data Output


Read by PWM


Read by Serial Port

  Serial Port Protocol:96008N1.(Speed Ratio 9600, 8 bits, no parity, 1 stop bit) Serial Port Report Time: 1+0.5 second Data Frame???0 byte):header+command+data(6 byte)+checksum+tail 0 header AA 1 command C0 2 data 1 PM2.5 lower byte 3 data 2 PM2.5 high byte 4 data 3 PM10 lower byte 5 data 4 PM10 high byte 6 data 5 0(retain) 7 data 6 0(retain) 8 checksum checksum 9 tail AB Checksum:Sum from data 1 to data 6. PM2.5 data content: PM2.5(ug/m3) = ((PM2.5 high byte x 256) + PM2.5 lower byte)/10 PM10 data content:PM10(ug/m3) = ((PM10 high byte x 256) + PM10 lower byte )/10    





Circuit Connection

Connect PM2.5 GVS to A0 on the Arduino UNO, and connect PM10 GVS to A1 on the Arduino UNO.


 #define pm25Pin 14 #define pm10Pin 15 void setup() { pinMode(pm25Pin, INPUT); pinMode(pm10Pin, INPUT); Serial.begin(9600); } void loop() { Serial.print("PM2.5 = "); Serial.println(pulseIn(pm25Pin, HIGH, 1500000) / 1000 - 2); Serial.print("PM10 = "); Serial.println(pulseIn(pm10Pin, HIGH, 1500000) / 1000 - 2); } 



Circuit Connection

Connect PM2.5 GVS to P15 on the micro:bit breakout board, and connect PM10 GVS to P16.




For the whole code, see this link: https://makecode.microbit.org/_83oYC4DcVc5z Or you can click Downloadin the page below to download all example code.  





Relative Accessary

Freaduino UNO Rev2.2 MB_EFUNO


BBC Micro:bit Board for Coding & Programming


ElecFreaks Micro:bit Breakout Board ( Octopus:bit)