ELECFREAKS Octopus Dust Sensor (Sharp GP2Y1010AU0F)

ELECFREAKS Octopus Dust Sensor (Sharp GP2Y1010AU0F) Documentation

Overview

The ELECFREAKS Octopus Dust Sensor (Sharp GP2Y1010AU0F) is a high-precision optical dust sensor designed for air quality monitoring applications. It is capable of detecting dust particles as small as 0.5 m and provides a linear output voltage proportional to the dust concentration. This sensor is ideal for IoT projects related to air quality monitoring, HVAC systems, and industrial automation.

Technical Specifications

Operating Voltage: 4.5-5.5V
 Operating Current: 20mA
 Output Voltage Range: 0-5V
 Dust Detection Range: 0.5-1000 g/m
 Accuracy: 10%
 Response Time: 10 seconds
 Interface: Analog output

Pinout

VCC: Power supply (4.5-5.5V)
 GND: Ground
 OUT: Analog output

Code Examples

### Example 1: Basic Analog Readout (Arduino)

This example demonstrates how to read the analog output of the dust sensor using an Arduino board.
```c++
const int dustSensorPin = A0; // Analog input pin for dust sensor

void setup() {
  Serial.begin(9600);
}

void loop() {
  int sensorValue = analogRead(dustSensorPin);
  float dustConcentration = (sensorValue  5.0) / 1024.0; // Convert analog value to voltage
  Serial.print("Dust Concentration: ");
  Serial.print(dustConcentration);
  Serial.println(" V");
  delay(1000);
}
```
### Example 2: Air Quality Monitoring with ESP32 (MicroPython)

This example demonstrates how to read the dust sensor output and send the data to a cloud-based service using an ESP32 board running MicroPython.
```python
import machine
import urequests

dust_sensor = machine.ADC(machine.Pin(32))  # Assign dust sensor to ADC pin 32

def get_dust_concentration():
    sensor_value = dust_sensor.read()
    voltage = sensor_value  5.0 / 4095.0
    dust_concentration = voltage  100  # Convert voltage to dust concentration ( approx )
    return dust_concentration

while True:
    dust_concentration = get_dust_concentration()
    print("Dust Concentration: ", dust_concentration, " g/m")
    # Send data to cloud service using urequests
    urequests.post("https://example.com/air_quality_data", json={"dust_concentration": dust_concentration})
    machine.sleep(60000)  # Send data every 1 minute
```
### Example 3: Dust Alarm System with Raspberry Pi (Python)

This example demonstrates how to use the dust sensor to trigger an alarm when the dust concentration exceeds a certain threshold using a Raspberry Pi.
```python
import RPi.GPIO as GPIO
import time

GPIO.setmode(GPIO.BCM)

dust_sensor_pin = 18  # Assign dust sensor to GPIO 18
alarm_pin = 23  # Assign alarm output to GPIO 23

GPIO.setup(dust_sensor_pin, GPIO.IN)
GPIO.setup(alarm_pin, GPIO.OUT)

def get_dust_concentration():
    sensor_value = GPIO.input(dust_sensor_pin)
    voltage = sensor_value  5.0 / 1024.0
    dust_concentration = voltage  100  # Convert voltage to dust concentration ( approx )
    return dust_concentration

while True:
    dust_concentration = get_dust_concentration()
    if dust_concentration > 50:  # Trigger alarm if dust concentration exceeds 50 g/m
        GPIO.output(alarm_pin, GPIO.HIGH)
        print("Dust Alarm: ON")
    else:
        GPIO.output(alarm_pin, GPIO.LOW)
        print("Dust Alarm: OFF")
    time.sleep(1)
```
Note: These examples are for demonstration purposes only and may require adjustments to suit your specific use case. Ensure you follow proper safety precautions when working with electronics and sensors.