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Optical Dust Sensor - GP2Y1010AU0F

Sharp's GP2Y1014AU0F is a tiny six-pin analog output optical air quality/optical dust sensor that is designed to sense dust particles in the air. It works on the principle of Laser Scattering and is especially effective in detecting very fine particles like cigarette smoke, and is commonly used in air purifier systems. This sensor consists of an infrared emitting diode and a phototransistor. It works with a nominal 4.5V to a maximum of 5.5V DC supply voltage. However, it typically works with 5.0V DC voltage and requires a maximum of 20mA current.


Pin Description of Optical Dust Sensor

S. NO.

Pin Name

Pin Description



LED VCC Pin. Connect to 5V through 150Ω Resistor



LED Ground Pin. Connect to GND



Used to Toggle LED On/Off. Connect to any digital pin of Arduino



Sensor Ground Pin. Connect to GND of Arduino



Sensor Analog Output Pin. Connect to any Analog Pin



Positive Supply Pin. Connect to 5V of Arduino


Features and Specifications of Optical Dust Sensor

  • Low Current Consumption: 20mA max
  • Typical Operating Voltage: 4.5V to 5.5V
  • Minimum Detectable Dust Size: 0.5µm
  • Dust Density Sensing Range: Up to 580 µg/m3
  • Sensing Time: Less than 1 Second
  • Sensitivity: 0.5 V/(100 µg/m3)
  • Operating Temperature: -10 C to +65 C
  • Dimensions: 1.81 x 1.18 x 0.69'' (46.0 x 30.0 x 17.6 mm)
  • The presence of dust can be detected by the photometry of only one pulse
  • Enable to distinguish smoke from house dust
  • Lead-free and RoHS directive compliant


Note: Complete technical details can be found in the Optical Dust Sensor Datasheet linked at the bottom of this page.


Alternative Options for Optical Dust Sensor

  1. Nova PM Sensor SDS011
  2. DSM501A PM2.5 Dust Sensor


Optical Dust Sensor - Overview

Inside the Optical Dust Sensor, an infrared emitting diode and a phototransistor are diagonally arranged near the air inlet, to allow it to detect the dust in the air.

Optical Dust Sensor Overview


As mentioned earlier, it works on the principle of laser scattering. The air enters through the air inlet where a light source (Infrared emitting diode) illuminates the particles and the scattered light is transformed into a signal by a phototransistor. These signals are amplified by the amplifier circuit and then processed to get the particle concentration. The intensity of the scattered light depends on the dust particles. More the dust particles in the air, the greater will be the intensity of light. Output voltage at the VOUT pin of the sensor changes according to the intensity of scattered light.

Optical Dust Sensor Working


Applications of Optical Dust Sensor

  • Detecting dust in the air.
  • Example: Air purifier, Air conditioner, Air monitor
  • Filtering system


2D Model of Optical Dust Sensor

The dimensions of Optical Dust Sensor - GP2Y1010AU0F are given below to help you with selecting the right PCB footprint for GP2Y1010AU0F.

Dimensions of Optical Dust Sensor

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