Arduino-based dust sensor for particulate matter 2.5 and 10 concentration readings. The readings are logged to ThingSpeak.com.

It utilises the following:

• ESP8266 (ESP-01)
• Shinyei PPD42NS dust sensor
• 3.3-to-5.0v logic level converter
• DHT22 Humidity & Temperature Sensor

The project makes use of the following libraries

• adafruit DHT-sensor-library (https://github.com/adafruit/DHT-sensor-library)

The following modifications are performed:

• RST pin is connected to GPIO16 on the ESP8266 (ESP-01)
• 10uF 25V Tantalum Capacitor connected between VCC and GND on the ESP8266 (ESP-01) (https://www.shadowandy.net/2015/08/esp8266-breadboard-adapter.htm)