MMM-SCD-30

This is an extension for the MagicMirror².

It monitors CO2 level from SCD-30 sensor and draws a chart for a few last hours.

1. Navigate into your MagicMirror's modules folder

2. Clone repository git clone https://github.com/Yours3lf/MMM-SCD-30

3. Go to newly created directory

4. Execute npm install to install the node dependencies.

If you got error, try to execute npm install chartjs

5. Connect the SCD-30 to your Raspberry Pi. See command: pinout

6. Make sure to enable I2C interface via raspi-config. Look for 0x61 on Bus 1. Check using sudo apt install i2c-tools && i2cdetect -y 1

7. Make sure to mark the scd_30.sh script as executable: sudo chmod +x scd_30.sh

8. Make sure your user running magicmirror is in the i2c group (eg. user called pi): sudo usermod -aG i2c pi

https://learn.adafruit.com/adafruit-scd30/python-circuitpython

Add it to the modules array in the config/config.js file:

modules: [
	...
	{
		module:  'MMM-SCD-30',
		position:  'bottom_right',
		config: {
			updateInterval:  100  //seconds
			}
	},
	...
]

Configurations properties

• python3 (should be installed on Raspberry Pi)

• adafruit-circuitpython-scd30 (Python library for the readings, installed the first time scd_30.sh runs )

1. Navigate into your MagicMirror folder
2. Run .sh script ./modules/MMM-SCD-30/scd_30_.sh (If script doesn't run, add exec parameter to it) sudo chmod +x modules/MMM-SCD-30/scd_30_.sh.
3. Script should print sensor values like this 566 - that means CO2 PPM in air

MMM-MHZ19 module MMM-DHT-Sensor module