Joy-it SEN-CCS811V1 User guide

www.joy-it.net

Pascalstr. 8 47506 Neukirchen-Vluyn

AIR QUALITY SENSOR

SEN-CCS811V1

1. GENERAL INFORMATION

Dear customer,

Thank you for purchasing our product. In the following, we will show you
which things should be observed during the use.

Should you encounter any unexpected problems, do not hesitate to

contact us.

www.joy-it.net

Pascalstr. 8 47506 Neukirchen-Vluyn

2. INSTRUCTIONS FOR USE

When using this module, please note that you must perform a so-called

Burn-In. This means that for the first 48 hours you will take measure­ments with the sensor in the mode of your choice. This is because the re­sistances and sensitivity changes within these first 48 hours, which makes
the measurement results inaccurate within this time.

There is also the so-called Run-In. This means that within the first 20 mi­nutes aer the sensor has been idle for a long time or aer changing mo­des, the sensor must stabilize before it can generate accurate data.

The so-called modes, which this sensor has, designate the time intervals
in which measurements are performed. The CCS811 has these modes:

Mode 0 Idle

(no measurements are performed)

Mode 1 IAQ measurement every second

Mode 2 IAQ measurement every 10 seconds

Mode 3 IAQ measurement every 60 seconds

Mode 4 IAQ measurement every 10 ms

(eCO2 and TVOC are not calculated)

In modes 1, 2 and 3, eCO2 and TVOC are calculated each time. Mode 1
reacts fastest to a change, but has a higher operating current. Mode 3
reacts more slowly, but has the lowest operating current on average.

If you change the mode to a slower measuring rate, you should switch to
mode 0 (idle) for at least 10 minutes. This happens, for example, when
you switch from Mode 1 to Mode 3. If you switch to a higher measuring
rate, you do not need to pay any further attention.

Mode 4 is used with an external system. The system receives the raw data
of the sensor to work with it. This allows the measurement rate of one
measurement every 250 ms.

Note: Mode timings are subject to typical 2% tolerance due to accuracy

of internal clock.

www.joy-it.net

Pascalstr. 8 47506 Neukirchen-Vluyn

3. USAGE WITH THE RASPBERRY PI

1. Connection

Raspberry Pi CCS811V1

3v3

(Pin 1)

VCC

GND

(Pin 6)

GND

SCL

(Pin 5)

SCL

SDA

(Pin 3)

SDA

GND

(Pin 14)

Wake

2. Code example

To execute the code example, first download the edited code from us

here or type the following command into the console:

You can use the following command to extract the file and delete the .zip
file. Please note that your directory may dier.

sudo raspi-config

wget https://joy-it.net/files/files/Produkte/SEN-CCS811V1/CCS811V1-Python.zip

unzip /home/pi/CCS811V1-Python.zip && rm /home/pi/CCS811V1-Python.zip

The files now contained in the folder were originally published here by

sparkfununder the MIT license.

Before you can now execute the code, you must first open the configura­tion: