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) (http://www.shadowandy.net/2015/08/esp8266-breadboard-adapter.htm)