Ambient air monitoring system

DeltaLAB - Instituto Tecnológico de Costa Rica

Developers

• Juan J. Rojas
• Joseph Muñoz
• Nicole Prado

What is this repository for?

• This repository was created to develop an ESP32-based air quality monitoring device.

Microcontroller info

• Model: Heltec ESP32 WiFi LoRa 32(V3)
• Documentation page

Sensors info

• OPC-R2 Optical Particle Counter
• Alphasense CO Sensor (CO-B4)
• Alphasense NO2 Sensor (NO2-B43F
• Alphasense SO2 Sensor (SO2-B4)
• DHT22 Humidity Temperature Sensor
• Adafruit INA219 Current Sensor Breakout

Data visualization in ThingSpeak

• Here

How do I get set up?

• Install Git

• Install Arduino IDE

• Follow this instructions to set up the Heltec Wifi LoRa 32 (V3) in the Arduino IDE

• Install all the Libraries in the Arduino Library Manager Open Arduino IDE, then Select Sketch->Include Library->Manage Libraries...

• Search WiFi, ThingSpeak, Adafruit_INA219, DHTStable, SdFat, and ESP32Time libraries and install them.

• Connect the components as shown in the diagram found in schematic_diagram.pdf

• Clone this repo and upload main.ino to the ESP32

Library source code and examples

• WiFi.h
• ThingSpeak.h
• ESP32Time.h
• Adafruit_INA219.h
• DHTStable.h
• SPI.h
• SdFat.h
• SdFatConfig.h

Contribution guidelines

• If you want to propose a review or need to modify the code for any reason first clone this repository in your PC and create a new branch for your changes. Once your changes are complete and fully tested ask the administrator permission to push this new branch into the source.
• If you just want to do local changes instead you can download a zip version of the repository and do all changes locally in your PC.