Air quality monitor

Use an ESP8266 to read BME280/Si7021 and CCS811 sensors and send data via MQTT in JSON format. Reports every TVOC reading that differs from the previous (1 measurement per second)

Forked from seanauff's remote-Si7021-CCS811, some of the changes (ex. setting readings and readings_to_avg to both = 1) are somewhat hacky. Left that way to easily allow changes back to report time averaged measurements.

Added code to add additional SGP30 sensor to the remote-Si7021-CCS811 code (remote-Si7021-CCS811-SGP30.ino) for sensor comparisons.

Instructions

Download code

Using Git

Clone the repo:

git clone https://github.com/seanauff/remote-Si7021-CCS811.git

Or download the zip

Click "Clone or download", "Download ZIP", and extract to folder of your choice.

Create secrets file

Create a copy of the secrets_example.h file and name it secrets.h. Add your secrets to the newly created secrets.h file, keeping the double quotes:

• SECRET_WIFI_SSID SSID of the wireless network to connect to
• SECRET_WIFI_PASSWORD Wifi password, if needed
• SECRET_MQTT_SERVER IP Address of your MQTT broker

Choose WiFi type

If using a WiFi network with no password, go to the remote_Si7021_CCS811.ino file and uncomment the line in the setup_wifi() function. Comment out the WiFi.begin(WIFI_SSID, WIFI_PASSWORD); line.

Flash board

Upload the code to your board of choice.

Verify it's working

Use the serial monitor to verify that the connection to WiFi and your MQTT broker is successful, and that sensor readings are being published.

Connect to the MQTT broker with another client

An example telegraf config is provided.