Simple CO2 Sensor PoC with display

Displays temperatur, CO2 level and humidity on the display

Connects to Wifi and prints out the IP address

The values can also be read with http e.g. with curl http://192.168.1.x

Hardware details:

1. ESP32 with display and battery managment system https://mikroshop.ch/?gruppe=3&artikel=1820
2. CO2 Sensor: Seeed Gove SCD30 http://wiki.seeedstudio.com/Grove-CO2_Temperature_Humidity_Sensor-SCD30/

Wiring and setup:

CO2 Sensor	Color	ESP32 Pin
GND	Black	GND
Vcc	Red	Vcc
SDA	White	Pin 5
SDL	Yellow	Pin 4

More details:

1. Display example usage, Wifi scaner: https://github.com/hackffm/ESP32_OLED_WifiScanner/blob/master/ESP32_OLED_WifiScanner.ino

2. Wiring http://www.areresearch.net/2018/01/how-to-use-ttgo-esp32-module-with-oled.html

3. CO2 sensor: http://wiki.seeedstudio.com/Grove-CO2_Temperature_Humidity_Sensor-SCD30/

Code:

Simple Arduino IDE program to display the values from the sensors

Upload with Arduino IDE

1. Select Board: Tools => Board => ESP32 Ardunio => WEMOS LOLIN32

2. Select Baud rate: Tools => Upload Speed => 115200

3. Select typical Port: Tools => /dev/ttyUSB0

4. Select Upload

5. Press Boot button on the board to enable flashing

Old arduino version

Arduino version