Let's add to our room sensor - Part 3 - eCO2 and TVOC

Summary

In this home automation tutorial, Pascal introduces viewers to the SGP30 air quality sensor, part of a multi-sensor series. He explains the importance of monitoring CO2 and TVOC levels for health and comfort, detailing the setup process, integration with Home Assistant, and coding for ESPHome. The tutorial also covers the significance of different CO2 levels and provides an introduction to the CCS811 sensor. Pascal thanks his supporters and invites viewers to follow along on GitHub and Patreon for more information.

Takeaways

• 😀 The tutorial is part of a series on home automation and introduces the SGP30 air quality sensor for monitoring eco2 and TVOC levels.
• 🔍 The video includes chapters for easy navigation and is designed to help viewers skip to specific sections of interest.
• 📚 For beginners, the tutorial suggests starting with the first video in the series that explains setting up an ESP32.
• 💻 The tutorial assumes viewers have access to Home Assistant software and provides a link for those who need to install it.
• 🙏 The presenter expresses gratitude to contributors and viewers, highlighting the importance of community support for channel growth.
• 🌿 The importance of monitoring eco2 and TVOC is emphasized for health and virus transmission mitigation, especially in indoor environments.
• 🛠 The SGP30 sensor is introduced as a digital multi-pixel gas sensor with a focus on its capabilities and compact design.
• 🔌 The tutorial covers the hardware setup, including how to connect the SGP30 sensor to the ESP32 using I2C communication.
• 📝 The video provides a step-by-step guide on integrating the SGP30 sensor with the ESP32, including code snippets and explanations.
• 📈 The presenter discusses the significance of eco2 and TVOC levels, explaining the health implications of different concentration ranges.
• 🎨 The tutorial concludes with a demonstration of how to visualize eco2 and TVOC data using the Horseshoe card in Home Assistant.

Q & A

What is the purpose of this tutorial?

The purpose of this tutorial is to guide viewers on how to integrate an air quality sensor, specifically the sgp30, into their home automation system to monitor indoor air quality.

What is the significance of monitoring eCO2 and TVOC levels?

Monitoring eCO2 (carbon dioxide) and TVOC (total volatile organic compounds) levels is crucial for indoor air quality and health. High CO2 levels can indicate poor ventilation, which can lead to a concentration of viral particles and affect cognitive performance. TVOC monitoring helps identify sources of harmful emissions and take necessary actions to improve air quality.

What are the potential health impacts of high CO2 levels?

High CO2 levels can lead to dryness, reduced cognitive performance, headaches, and decreased concentration. In extreme cases, levels above 5,000 ppm can cause oxygen deprivation, leading to permanent brain damage or even death.

What is the recommended safe level for TVOC?

The recommended safe level for TVOC is below 0.3 mg per cubic meter, at which the risk of adverse health effects is minimal.

What are the key components of the sgp30 sensor module?

The sgp30 sensor module includes a digital I2C interface, a temperature-controlled micro hot plate, and two pre-processed indoor air quality sensors for detecting a wide range of VOCs and H2 (hydrogen).

How does the sgp30 sensor module integrate with other devices?

The sgp30 sensor module integrates with other devices using a digital I2C interface, making it easy to connect to IoT devices for air quality monitoring.

What are the necessary hardware components for setting up the sgp30 sensor?

The necessary hardware components include the sgp30 air quality sensor module, an ESP32 for the home automation system, and a connection to a power source (VCC) and ground (GND).

What software is required to use the sgp30 sensor with home automation?

The required software includes Home Assistant for the home automation system and ESP-Home for configuring the ESP32 device.

How can viewers access the code used in the tutorial?

The code used in the tutorial is available on GitHub, and the link can be found in the video description.

What is the address of the sgp30 sensor in the I2C interface?

The I2C address of the sgp30 sensor is 0x58.

How often should the sgp30 sensor update its measurements?

The sgp30 sensor should update its measurements every 30 seconds, as set in the tutorial's code.

What is the significance of using compensation in the sgp30 sensor readings?

Using compensation, such as temperature and humidity from a DHT22 sensor, helps to improve the accuracy of the sgp30 sensor readings by accounting for environmental factors.

How can viewers customize their Home Assistant dashboard to display sensor data?

Viewers can use the Horseshoe card in Home Assistant to customize their dashboard. This card allows for the display of sensor data with color-coded ranges indicating different levels of air quality.

Outlines

00:00

🤖 Home Automation Tutorial Introduction

In this segment, Pascal introduces a new home automation tutorial focusing on integrating an air quality sensor. He apologizes for some technical difficulties and highlights the importance of time, adding chapters to the tutorial for easy navigation. The tutorial is part of a series, and viewers are encouraged to start with the first part if they are new. Pascal also mentions his GitHub for code and thanks his supporters, Steve and Steven, for their contributions. He invites viewers to his Patreon for more information about his channel and situation.

05:01

🌿 Understanding the Importance of Air Quality Sensors

Pascal explains the significance of monitoring indoor air quality, specifically eco2 (carbon dioxide) and TVOC (Total Volatile Organic Compounds). He discusses how high CO2 levels can indicate poor ventilation and potential virus transmission, emphasizing the health benefits of good air quality. TVOC monitoring helps identify harmful compounds and improve indoor environments. The SGP30 sensor, which uses ceramic sensor technology, is introduced as a key component for this tutorial, capable of detecting a wide range of gases and providing calibrated air quality signals.

10:02

🔌 Setting Up the SGP30 Sensor with ESPHome

This paragraph delves into the technical setup of the SGP30 sensor with ESPHome. Pascal guides viewers on how to connect the sensor to the existing light sensor setup via I2C, detailing the wiring connections. He also provides instructions on how to define the I2C interface in the code and locate the SGP30 at address 0x58. The tutorial includes steps to add the sensor to the ESPHome configuration, including setting up the eco2 and TVOC sensors, and using temperature and humidity data from a DHT22 sensor for compensation.

15:06

📊 Viewing Sensor Data in the Dashboard

Pascal demonstrates how to view the sensor data in the Home Assistant dashboard. He discusses the CCS811 sensor as an alternative to the SGP30 and notes the differences in the ESPHome configuration. The focus then shifts to understanding the levels of CO2 and TVOC and their implications for health and comfort. Pascal explains the normal and potentially harmful ranges for these measurements, providing a clear guideline for interpreting the sensor data.

20:13

🏡 Customizing the Dashboard with Horseshoe Card

In this segment, Pascal shows how to customize the Home Assistant dashboard using the Horseshoe card. He guides viewers on how to edit the card to display eco2 and TVOC data, changing the data source from open weather map to the ESPHome device sensors. The tutorial includes steps to adjust the color scheme based on the eco2 levels, using hex values for a visual representation of the air quality. Pascal also discusses the need for a separate video to fully explain the Horseshoe card functionality.

25:13

🌳 Outdoor Air Quality Monitoring

Pascal shares his personal setup, monitoring outdoor air quality with a weather station. He compares the CO2 and TVOC levels outdoors to the indoor environment, noting the high levels of CO2 in his city, Johannesburg. The discussion highlights the importance of monitoring both indoor and outdoor air quality and the potential health impacts of poor air quality. Pascal also mentions plans for future videos to further explore the Horseshoe card and other visualization options.

30:19

🙌 Conclusion and Acknowledgments

In the final paragraph, Pascal thanks his supporters, Steve and Steven, for their donations and acknowledges his first Patreon, Steven Brard, for his contributions and inspiration. He encourages viewers to like, subscribe, and turn on notifications to stay updated with his channel. Pascal also invites viewers to check out his Patreon for more support and concludes the tutorial with a reminder of the importance of implementing eco2 and TVOC sensors for better air quality monitoring.

Keywords

💡Home Automation

Home automation refers to the integration of various technologies within a home to control and manage devices and systems remotely. In the video, the theme revolves around adding an air quality sensor to a home automation setup, enhancing the control and monitoring of indoor environments.

💡SGP30

The SGP30 is a digital multi-pixel gas sensor designed for easy integration into IoT devices. It is used in the video to monitor air quality by detecting levels of CO2 and TVOC. The script discusses how to set up and integrate this sensor into a home automation system.

💡Air Quality Sensor

An air quality sensor is a device that measures the quality of the air in an environment, typically by detecting levels of pollutants and gases. In the video, the SGP30 air quality sensor is highlighted as a way to monitor CO2 and TVOC levels, which are crucial for understanding indoor air quality.

💡CO2

CO2, or carbon dioxide, is a gas that is naturally present in the atmosphere and is also produced by human activities. In the context of the video, monitoring CO2 levels is important for assessing indoor air quality and ventilation, as high levels can indicate poor air circulation and potential health risks.

💡TVOC

TVOC stands for Total Volatile Organic Compounds. These are a group of organic chemicals that can be found in both indoor and outdoor air and can have adverse health effects. The video discusses the importance of monitoring TVOC levels to maintain a healthy indoor environment.

💡I2C Interface

The I2C interface is a communication protocol used for attaching low-speed peripherals to a motherboard or device. In the video, the I2C interface is mentioned as the method by which the SGP30 sensor communicates with the home automation system.

💡Home Assistant

Home Assistant is an open-source home automation platform that can be used to control and monitor various devices in a home. The video script includes instructions on how to integrate the SGP30 sensor with Home Assistant for monitoring air quality.

💡ESP32

The ESP32 is a series of low-cost, low-power microcontrollers with integrated Wi-Fi and Bluetooth capabilities. In the video, the ESP32 is likely used as the central processing unit for the home automation system, interfacing with the SGP30 sensor.

💡Horseshoe Card

The Horseshoe card is a type of card used in Home Assistant for displaying data in a graphical format. In the video, the script discusses how to use the Horseshoe card to visualize the data from the SGP30 sensor, providing a visual representation of CO2 and TVOC levels.

💡Virus Transmission Mitigation

Virus transmission mitigation refers to measures taken to reduce the spread of viruses, such as improving ventilation. The video explains how monitoring CO2 levels can help identify poorly ventilated spaces, which can be linked to increased risk of virus transmission.

💡Indoor Air Quality

Indoor air quality is the quality of the air inside a building, which can affect the health and comfort of occupants. The video focuses on using the SGP30 sensor to monitor CO2 and TVOC levels as a means of assessing and improving indoor air quality.

Highlights

Introduction to a home automation tutorial series focusing on integrating an air quality sensor.

Apology for technical difficulties and assurance of resolving them promptly.

Inclusion of video chapters for viewer convenience to navigate through the content.

Overview of the SGP30 air quality sensor and its role in enhancing a multi-sensor system.

Explanation of how to set up an ESP32 for beginners in the series.

Invitation to follow the tutorial series on GitHub for code access.

Acknowledgment of community support with special thanks to contributors.

Importance of monitoring eco2 and TVOC for indoor air quality and health.

Discussion on the advantages of eco2 monitoring for virus transmission mitigation.

Link between high CO2 levels and potential health issues like headaches and reduced concentration.

Introduction to TVOC and its significance in creating a healthier home environment.

Technical explanation of the SGP30 sensor's capabilities and integration into IoT devices.

Detailed guide on setting up the SGP30 sensor with ESP32 using I2C communication.

Code demonstration for integrating the SGP30 sensor into the existing system.

Explanation of the need for temperature and humidity compensation in sensor readings.

Instructions on setting up the Home Assistant for sensor data integration.

Analysis of CO2 and TVOC levels and their impact on health and comfort.

Tutorial on creating a visual representation of sensor data using the Horseshoe card in Home Assistant.

Discussion on the CCS811 sensor as an alternative to the SGP30 with minor code adjustments.

Personal application of the sensor in the presenter's setup and real-world data sharing.

Final thanks to the community and call to action for likes, subscriptions, and notifications.

Introduction of Patreon and invitation for support, with acknowledgment of the first patron.

Transcripts

hey there I'm Pascal and welcome to

another home automator tutorial and I

want to up front to say I am very sorry

that I'm looking on this side that's

where my notes are right now I'm hoping

that I will be solving this shortly all

right so I know that your time is

valuable and because of that I've added

chapters to this tutorial you can access

them on the video timeline or in the

description if you want to skip to the

mey stuff go straight to about the

sgp30 air quality sensor linked below

this is part three of the series and

we'll continue to add to our room multi

sensor by adding this air quality sensor

so we are going to learn how to monitor

our rooms eco2 and T before I start

though

if you are new to the Channel please go

and start with the first of the series

where I explain how to set up an

esp32 and get the most out of it you can

go to the series right here in the card

and I'll leave a link in the

playlist if you want to follow me during

this tutorial my code is on GitHub I

will also leave that in the description

below before we go any further there are

a few thanks that I have to give I want

to thank Steve and step for their

messages and coffee

contributions the channel will grow

thanks to people like Steve and Steven

but all of you that have commented that

have liked that have watched my videos I

want to thank you too this is my 12th

video I want to go forward and do many

more lastly I'd love you to head over to

my patreon I'm not asking you to join

but there are news there that explain a

bit more about my situation and the

situation of this channel I think it's

important that you understand now that

I've got all of that out of the way let

me explain what eco2 and tiok is and why

we should monitor

[Music]

it

for today's tutorial we'll need a few

things Hardware wise we will need either

an sgp30 air quality sensor module or a

CSS

811 air quality sensor module also we'll

need some software home assistant and if

you don't have home assistant yet I will

leave a link in the description below so

that you can go and install it and ESP

home again I will leave the link in the

description now why do we want an eco2

and TVO

sensor why would we want to monitor air

quality monitoring eco2 and title carbon

dioxide offers several crucial

advantages particularly in the context

of indoor air quality and health firstly

virus transmission mitigation E2

monitors provide a valuable gauge on an

area's ventilation as people Excel they

release CO2 and individuals carrying Aon

viruses also emit tiny viral particles

so the one is linked with the other high

CO2 level indicates a potential

concentration of these particles

by monitoring CO2 we can identify poorly

ventilated space and take corrective

actions from mechanical ventilation or

ensuring that doors and windows remain

open this helps to reduce the risk of

virus transmission and keep indoor air

fresh and safe secondly it helps to have

a better comfort and higher productivity

Beyond virus control ecco2 monitoring

contribut Ed to a more pleasant

environment for occupants studies reveal

that elevated CO2 levels can lead to

driness Ander cognitive performance

headache and reduce

concentration now I'm going to just go

through the my notes on total volatile

organic compounds or deox offer several

crucial benefits for health and

well-being awareness and informed

decision tvok monitoring and empowers us

with the knowledge about the indoor air

quality by understanding tvok levels we

can identify sources of VO emissions

volatile organic compounds and take

informed action whether it's improving

ventilation or eliminating specific vo

sources this awareness helps to create

healthier home environment for our

families tvok encompasses a diverse

group of organic and chemical found in

both indoor and outdoor

air while some are harmful and naturally

occurring others like for

[Music]

mes and Benzene can be very harmful

monitoring tvok allows us to distinguish

between this variance and take necessary

steps to protect ourselves from adverse

health effects by keeping tvok levels in

check we contribute to our our overall

well-being and comfort I will discuss

the levels of these effects for both e

CO2 andok later in this

tutorial the

sgp30 is a digital multi-pixel gas

sensor designed for easy integration

into iot devices the techn ology

utilizes ceran

C seos technology which integrates a

complete sensor system on a single chip

it includes a digital i2c interface a

temperature controlled micro hot plate

and two pre-processed indoor quality

sensors the gas detection of the sgp30

can detect a wide range of T Vox or Vox

and H2

hydrogen it provides two calibrated air

quality signal for easy integration the

sgp30 comes in a very compact six pin

dfn package the typical accuracy is

within measured values of

15% the sensor we're going to be using

today is the

sgp30 it spin outs include the following

VCC for the sensor power from 1.8 volts

to 5 volts we'll be using 5

volts Common

Ground SC the clock pin for i2c SDA the

data pin for i2c and then the 1.8 volt

out which we will not be

using

e

so here we are we have the setup we did

in the previous tutorial where we

introduced the light sensor which is

over here we are going to bridge from

the light sensor straight into

our

sgp30 uh we can do that thanks to i2c

using addressing as its standard so we

can actually bring to here and then if

we want to to the next and to the next

and so forth okay so the yellow is SC

and the Orange is

SDA clock for yellow data for

orange that will be put into the

spg3 SDA and SC we will take from the

Common Ground Rail and put into the

ground of the

spg3 and we will take the uh the 5 volts

from the 5 volts common Rail and put it

into

VCC let's get into to the code but

before we get into the

code remember all of the code is

available on my GitHub page the link is

in the description

below if you not defined the i2c

interface yet you'll need to do so

before we even start touching the code

so please have a look at my previous

tutorial when I explain how to use i2c

and where we put light s

into the code again before we get into

the code since our

i2c part is already in the code we

should be able to find the

sgp30 at address 0x 58 so we're going to

go into the logs and we going to let the

logs run I will wait for one of the

sensors to give some data it's actually

more than that which is perfect we're

going to scroll back and right here we

found i2c device at address 058 exactly

where we thought it was going to be now

we can go into the code and for that

we're going to go into

edit and and first things first we are

going to scroll

down and we are getting into the area

where we should be adding our code you

can see right now the

dht22 you can see the

bh1750 which is our light sensor so now

we've got a little bit of space I've got

everything ready for us into the buffer

so I am just going to paste it and run

through it with

you firstly we have the Declaration of

the platform we are going to use this is

going to be the

sgp30 following that we are going to be

pulling the data from the eco2 sensor

which we're going to creatively name

eco2 the ID and I think you've got the

picture by now if you've been following

me that it's always device internal name

and the sensor name so in this case it

will be

eco2 the accuracy decimals we're going

to make one for now we're going to do

exactly the same thing for the TX

senser firstly we're going to call it t

I know very creative then the ID is

going to be our device internal name and

underscore T and the accuracy decimal is

going to be one now we are going to

store the Baseline and you're going to

tell me yes but isn't there a whole lot

of steps to get there and I'm going to

tell you yes there is however we are not

going to deal with the Baseline

today I will try to make a video about

how to set up a TVO sensor Baseline at

the later stage I just want us to be

able to use it right now the variances

are going to be very small and you're

going to understand why

shortly the address obviously is 0

x58 and the reason why our variances are

going to be low is because we are going

to use

compensation we are going to use the

temperat that we get from the dht22

Which is higher in the code and the

humidity from the dht22 which is also

higher in the code the update interval

is going to be at 30 seconds like we've

set everything

else and right now we are going to

install by clicking install clicking

wirelessly and patiently waiting that it

is going to rebuild our our firmware and

because I built the firmware a little

earlier it had cached it it is now

uploading it a few moments

later and here we are we are waiting for

the as to reboot a little longer than a

few minutes

later

ah here I here is our

initiation and now we have some data

coming through

and we can see that

um the t-o sensor is not giving us any

data at this point the eco2 is telling

us 400 we will talk about the limits and

what that data means shortly but right

now what I want to do is actually go

back a little up and you can see the s

gp30 is is a

long um a a long sensor to track it

starts here and it goes all the way down

to over

here all right we are going to stop here

we are going to close

here and I will see you inside the

dashboard

before we carry on I promised you that

we would look at the

ccs811 eco2 and TX sensor here we are on

the documentation of ESB home if we

scroll down a little bit we will end up

with this example and you will see that

outside of the CCS 811 there is not much

difference to the Cod that we have done

the difference and let me point it out

to you is over here now we do have

address like we've used in the

sgp30 and we have temperature and

humidity however temperature and

humidity are not nested and they are not

indented this is relatively important

you can't just take the code from the

one to the other it will

fail let's visit the

device and to visit the device we're

going to click on visit username is

admin password is

myet there we are and we can see the

logs on the one side

and if we go down we still don't have

any T data I am not

surprised and we have eco2 right here so

we've got it in the logs and in the

device

itself before we go and actually design

something for the dashboard there are

things that we need to know and these

are what are the levels and what they

mean so let's decipher the values

together and start with CO2 levels in

between 250 and 400 part per million

this is a normal background

concentration in outdoor ambient air

from 400 to 1,000 parts per minut

million the concentration is typical of

an occupied indoor space and there is

good air exchange from 1,000 to 2,000

parts per million people may start to

complain about D driness and poor air

quality from 2,000 to 500 parts per

million headaches sleepiness feeling

stagnant feeling that the air is stale

stuffy uh with poor with poor

concentration loss of attention

increased heart rate and slight Nosa may

be present from 5,000 parts per million

we've reached the limit that we can take

from 40,000 parts per million you are

then in oxygen deprivation resulting in

permanent brain damage comma or even

death now let's talk a bit about evok

and let's decipher those levels the

recommended safe level is below

0.3 mgram per cubic meter at this level

the risk of adverse health effects from

Vox is minimal from 0.3 to 0.5 mgram per

cubic meter is within range of indoor

air quality and remains acceptable from

0.5 5 to 1 mgam per cubic M we should

start getting

concerned from 1 to 3 mg per cubic M

it's becoming

serious anything beyond that will impact

health and comfort especially over the

long term now let's go and Implement

something like that inside of all my

system using the Horseshoe card if you

haven't seen my short tutorial on the

Horseshoe card please click on the link

above and come back here when you are

finished we've got on the right hand

side a very basic example of a whole

shoe card we are going to do something

far more complicated than that so again

if you haven't installed Hax if you

don't have the Horseshoe card yet please

click on the link above I will also

leave it in the description and go and

see that video and come back when you're

finished so we're going to open this

card and we're going to hit edit now

right now it's getting its information

from open weather map temperature we are

going to change that to change that we

need the sensors so we're going to

duplicate the tab we are on this tab

going to hit here to expand the menu and

we're going to go all the way down to

settings in settings we're going to go

to

devices espb one device and as you can

see we have eco2 and tvoc already to get

the sensor name you click on the sensor

that you

want on the Range and right here you can

copy it and we can go back here and we

are going to put

instead of sensor open weather map

temperature we are going to put sensor.

ESP room sensors eco2 we're going to

change this from temperature to

PPM and the

attribute does not exist so we are going

to take the attribute out and this is

where we're going to stop right now

we're going to save and you can see 400

PPM Johannesburg we're going to edit

again Control Alt

a so that we get the lot we're going to

copy

it we're going to cancel we're going to

add a card scroll all the way

down put a manual card in delete this

part and paste it

go back to the

settings close this and we are going to

go and and click the wrench card and

again click on copy go back here to the

top and we are going to do sensor we're

going to replace it with t t in parts

per

million and we should have if zero which

is

correct now this is not to show you

exactly how the Horseshoe card works I

will do that in a separate video right

now though what we are going to do is go

back to this one edit and we are going

to go all the way down now right now

what it does is that at about 10 it goes

from red to blue according to what we've

learned

earlier up to 400 we are pretty safe in

The Blue Zone so we can do 400

here from

400 to

1,000 we are in another Zone which is a

bit

more uh

dangerous if you don't want to use names

of colors you use use hex values for

colors how do you get hex values for

colors we go to a hex value Color Picker

so we're going to look for one Color

Picker there we

are okay we'll take the first one it

doesn't matter here we are I guess it's

this one yes does it work here as well

yes it does the first one I believe

should be a very light green so we're

going to take that color and we're going

to go back and the this should be in my

opinion a very light green now if you do

this it won't work I have to put the

hash before it let's see if it works and

it

doesn't

or doesn't it take oh it may need to

be this save

yes okay so we've got it

and

from then from 1,000 I would like to go

a little darker in fact I'll go

a Qui

there we are going to take

that

and

again

hash and now we have another color a

little longer than a few minutes

later and what we are going to do as

well is change

Johannesburg to

my

r

e

CO2 oops it's CO2 we are going to save

and this is basically what we're going

to get I don't know why it ends up there

so right now we are in the green if you

want to you can change one sorry you can

change

one

so yes so right now the Horseshoe scale

starts at minus 10 and goes all the way

to 40 this is why everything looks wrong

so the minimum is going to be my a Zer

and our maximum is going to be

6,000 okay so now that we've got all of

that sorted we're going to save and

we're going to see that we are only at

400 and it is pretty safe now I haven't

beautified it or anything of the kind I

will show you

quickly what it would look

like if we follow this but instead

of using the actual values I'm going to

take a zero out of here and I'm going to

put 400 here because that will show

us that should show us

oh I'm still up to 6,000 which is why it

doesn't

work okay this is what it would show us

as and you can see there is a

gradual uh from the green to the red

passing the other colors that we've

actually put in which are both here and

here okay let me go and put it back to

what it

was this is

400 1,00

2,000 and this is

5,000 okay and we are going to say that

this is at

6,000

save now because I'm not getting any

data out of the t-o sensor yet what I

will do is I will wait until tomorrow

and see if there is data coming through

and uh right now this is what the eco2

looks

like we can pretty it up and we can do

something quite nice to view to give you

an example let me hop directly into my

setup this is my setup this is directly

from my weather station so it's not

indoors but Outdoors you can see that

the CO2 is actually extremely high in

the moment you can also o see that uh

our lowest is at

407 which is equivalent to what it

should be outside and bordering onto

inside and the maximum is at

7,992 which is current I live in a city

where going outside at night is actually

a problem Johannesburg is airwise very

bad same thing go for tvok you can see

that at the point we were at one parts

per billion and if I look this was

probably around 2:00 and yeah this was

probably around 2:00 and right now he at

1,156 parts per billion so these are

things that you can get to do with the

Horseshoe card the bottom of it I will

also cover in a different video it is a

graph that comes from hack and uh this

is what we're looking at being able to

do it's something like this where you

have all of this data available to you

this is where we working towards slowly

but

surely I think we've covered

eco2 in quite some depth I hope that

you've enjoyed this tutorial and

explainer but before I leave you I'd

like to thank Steve and Steven for their

kind donation of coffee

again and I must mention my first

patreon a home automat manager Steven

brard who brya as you would say in

French uh who has been not only a

contributor but also a source of

inspiration during our discussions on

patreon and it is very very appreciated

the channel may be small today we do not

know where we're going to go tomorrow

I'm hoping that we're going to be able

to help a lot more people before my

goodbyes please don't forget to like

subscribe and smash that notification

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video if you want to support the

channel I have started my patreon you

can go and have a look at the patreon I

will leave the link below and um I wish

you the best with implementing a eco2

and TX sensor whether it is the

sgp30 or it is the CCS 811 this is

Pascal signing off and I'll see you in

the next

tutorial