Skip to content

eMariete

  • Home
  • Radioactivity Madrid
    • Ionising radiation in Madrid
    • Weather station
  • CO2 sensors
    • The CO2 sensor bible MH-Z19B
    • Sensirion SCD30 dual-channel NDIR CO2 Sensor
    • Winsen Low Power NDIR CO2 Sensor MH-Z1311A
    • Comparison CO2 sensors MH-Z19B vs Senseair S8
    • Sensirion SCD41 and SCD40 CO2 Sensors
    • CO2 Sensors MH-Z19B FALSE
  • CO2 Easy
    • Build the home CO2 monitor with Wifi
    • Uses the Senseair S8 sensor in the CO2 Meter
    • Gallery: Users' CO2 Easy meters
    • 3D printed enclosures for CO2 meter
    • Add an OLED display to the meter
    • Adds temperature, humidity and atmospheric pressure
    • Are home CO₂ meters as reliable, accurate and precise as commercial ones?
    • Full colour touch screen for CO₂ meter Wow!
    • Adds buzzer alarms to the CO2 meter
    • The CO2 meter on a large display
    • CO2 on a giant screen for bars, restaurants, classrooms and the like.
  • CO2 Gadget
    • CO₂ Gadget – Open-source CO₂ sensor for ESP32
    • CO2 Meter TFT Colour Display with TTGO T-Display Sensirion SCD30 - The CO2 Gadget
    • CO2 Gadget Low Power CO2 monitor with Lilygo TTGO T5 ePaper and Sensirion SCD41 Sensor
    • CO2 Gadget Boxes, 3D Printed and without 3D printer
  • English (UK)
  • Español
eMariete
  • Home
  • Radioactivity Madrid
    • Ionising radiation in Madrid
    • Weather station
  • CO2 sensors
    • The CO2 sensor bible MH-Z19B
    • Sensirion SCD30 dual-channel NDIR CO2 Sensor
    • Winsen Low Power NDIR CO2 Sensor MH-Z1311A
    • Comparison CO2 sensors MH-Z19B vs Senseair S8
    • Sensirion SCD41 and SCD40 CO2 Sensors
    • CO2 Sensors MH-Z19B FALSE
  • CO2 Easy
    • Build the home CO2 monitor with Wifi
    • Uses the Senseair S8 sensor in the CO2 Meter
    • Gallery: Users' CO2 Easy meters
    • 3D printed enclosures for CO2 meter
    • Add an OLED display to the meter
    • Adds temperature, humidity and atmospheric pressure
    • Are home CO₂ meters as reliable, accurate and precise as commercial ones?
    • Full colour touch screen for CO₂ meter Wow!
    • Adds buzzer alarms to the CO2 meter
    • The CO2 meter on a large display
    • CO2 on a giant screen for bars, restaurants, classrooms and the like.
  • CO2 Gadget
    • CO₂ Gadget – Open-source CO₂ sensor for ESP32
    • CO2 Meter TFT Colour Display with TTGO T-Display Sensirion SCD30 - The CO2 Gadget
    • CO2 Gadget Low Power CO2 monitor with Lilygo TTGO T5 ePaper and Sensirion SCD41 Sensor
    • CO2 Gadget Boxes, 3D Printed and without 3D printer
  • English (UK)
  • Español

Sensors

Are home CO₂ meters as reliable, accurate and precise as commercial ones?

7 July 202616 February, 2021 by Mariete

How good is a home CO2 meter compared to a commercial one?

Categories CO2 Easy, CO2 Gadget, CO2 Meter Tags Sensors 1 Comment

Gallery: Users' CO2 Easy meters

13 February, 2021 by Mariete

Some montages made by users - submit your own!

Categories CO2 Easy, CO2 Meter, Projects with Arduino Tags ESP Easy, ESP8266, 3D printing, Sensors Leave a comment

Easy CO2 Meter with ESP8266 (NodeMCU) and Senseair S8 sensor

2 November, 202322 January, 2021 by Mariete

Why mount a CO2 meter with another sensor when you have this one?

Categories CO2 Meter, Projects with Arduino Tags ESP Easy, ESP8266, NodeMCU and Wemos D1 Mini, Senseair S8, Sensors 15 Comments

Power from NodeMCU, Wemos Mini D1 and Arduino

13 January, 2021 by Mariete

What do we need to consider when powering external sensors and actuators?

Categories Projects with Arduino Tags Arduino, ESP8266, MH-Z19B, NodeMCU and Wemos D1 Mini, Arduino Projects, Sensors 8 Comments

CO2 Sensors MH-Z19B FALSE

12 January, 2021 by Mariete

BEWARE: Don't let them get to you, they're everywhere!

Categories CO2 Easy, CO2 Gadget, CO2 Meter, Projects with Arduino, CO2 sensors Tags MH-Z19B, Sensors 13 Comments

The CO2 sensor bible MH-Z19B

25 November, 202327 December, 2020 by Mariete

Discover all the secrets of the MH-Z19B CO2 sensor in one place. An inexpensive, accurate (for the price) and very easy to use CO2 sensor.

Categories CO2 Easy, CO2 Gadget, CO2 Meter, CO2 sensors Tags Arduino, MH-Z19B, Sensors 57 Comments

Comparison CO2 sensors MH-Z19B vs Senseair S8

21 June, 202317 December, 2020 by Mariete

Here you will find the differences and similarities between the MH-Z19B and Senseair S8 CO2 sensors.

Categories CO2 Meter, Projects with Arduino, CO2 sensors Tags Arduino, ESP Easy, ESP8266, NodeMCU and Wemos D1 Mini, Sensors 3 Comments

A home CO2 meter with Wifi against the coronavirus: The CO2 Easy

22 November, 2020 by Mariete

Easily build your own quality CO2 meter in an afternoon

Categories CO2 Easy, CO2 Meter, Projects with Arduino Tags Arduino, Home automation, ESP Easy, ESP8266, Smart Home, MH-Z19B, NodeMCU and Wemos D1 Mini, Senseair S8, Sensors, smart home 309 Comments

How does a Geiger counter work? Its 6 characteristics

21 September, 2020 by Mariete

Have you ever wondered how a Geiger counter works and how it measures radioactivity? In this article we will look at how it works in a way that everyone can understand.

Categories Projects with Arduino Tags Radioactivity, Sensors 1 Comment

How do I go about creating a new circuit?

21 February, 2018 by Mariete
Electronic circuit with components and connections for DIY projects.

How is the design of a homemade circuit? Let's talk about the design and assembly of electronic circuits.

Categories Projects with Arduino Tags Arduino, ESP Easy, ESP8266, Arduino Projects, Sensors Leave a comment
Older posts
Newer posts
← Previous Page1 Page2 Page3 Next →
<img loading="lazy" decoding="async" width="300" height="300" src="https://emariete.com/wp-content/uploads/2022/02/UNETE-AL-GRUPO-DE-TELEGRAM-DE-EMARIETE-e1644085051273.png "
DO YOU HAVE DOUBTS? QUESTIONS? PROBLEMS?

In the eMariete Telegram group you can easily contact me, and other users, who will be able to help you, and whom you will be able to help.

  • FPV model aircraft
  • Analysis
  • CNC
  • CO2 Easy
  • CO2 Gadget
  • Home automation
  • Electronics
  • Solar energy
  • Weather station
  • CO2 Meter
  • Projects with Arduino
  • Raspberry Pi
  • Repair
  • CO2 sensors

Other pages

  • About eMariete
  • Advertising
  • Privacy policy
  • Cookies policy
  • Legal notice

Amazon Affiliates

eMariete.com participates in the Amazon Affiliate Program. As an Amazon Affiliate, I earn revenue from qualifying affiliate purchases. If you make a purchase, you will help to keep this site online and it won't cost you any more.

Subscribe to the Newsletter

* indicates a need to
© eMariete.com 2016-2026 - Made in Spain with ❤ for the World