Electronics, ESP8288 and ESP32, Arduino, CNC, Model aircraft and more

If you are looking for the CO2 Meter with ESP8266, here it is:

About Mariete's Blog:

In this blog you will find useful and fun information about the things that I love, and that, I imagine, you too. My motto is "Not a day without cacharjar" and I try to fulfill it. Maybe not every day I start soldering an electronic project, or programming, but rare is the day that I do not look for information and I dedicate the time to learn, while I think about what can i do next.

CO2 Meter TFT Color Display with TTGO T-Display Sensirion SCD30 (Bluetooth LE)

CO2 Meter TFT Color Display with TTGO T-Display Sensirion SCD30 - The CO2 Gadget

A high-quality CO2 meter with a color screen and connection to your mobile via bluetooth that you can take anywhere thanks to its rechargeable battery (optional) ...
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Sensirion SCD30 NDIR dual-channel CO2 sensor

The SCD30 CO2 sensor from the manufacturer Sensirion is one of the best options when deciding on a sensor for our CO2 meter. In some cases ...
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CO2 Monitor on your cell phone with ESP32 and Sensirion SCD30 sensor [BASIC VERSION]

Welcome to this tutorial in which you will learn how to build the basic version of the CO2 meter with App for Android and iOS, using Bluetooth, following the official project of the ...
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The Sensirion SCD41 CO2 sensor (and the SCD40)

Do you want a small, low-consumption, versatile and quality CO2 sensor? It's quite likely that the Sensirion SCD41 CO2 sensor (and its twin the SCD40) is the ...
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DIY CO2 Monitor with Ultra Low Power Consumption

Would you like to have a CO2 meter powered by cells or batteries with an ultra-low consumption and a range of several weeks, or even months? In this article ...
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Teardown and Reverse Engineering CO₂ and Particulate Meter DM306 / WS1125

After doing the initial analysis it was time to do what I had actually bought the DM306 for. Gut it! Curiosity kills me, and I need to know what's inside ...
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Experiments with ESP Easy (ESP8266) and low consumption - v3.0

We continue in our search for the low consumption of our ESP8266 to use it with battery and in this experiment we are going to try to dissect the consumption of the CO2 meter with ...
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Experiments with ESP Easy (ESP8266) and low consumption - v2.0

Achieving a low consumption of our ESP8266 to use it with battery is the objective we want to achieve, and in this article we are going to continue the experiments. Let's try ...
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ESP Easy and deep sleep mode (ESP8266 low power)

The ESP8266 microcontroller is very well prepared to take full advantage of power, with very low power modes. For many people these low power modes seem mystical themes ...
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Experiments with ESP Easy (ESP8266) and low consumption - v1.0

Do you want to reduce the consumption of your project with ESPEasy and an ESP8266 easily to be able to use it with batteries for months? Keep reading. In this series of articles, of which ...
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CO2 meters with Arduino, ESP8266, ESP32, etc.

CO2 measurement has become very important to me and blog users.

Here you will be able to find lots of useful information, if you want build a CO2 meter.

Comparison of CO2 sensors, sensor analysis, unboxings of commercial CO2 meters, diagrams, options and extensions, etc.

Projects with ESP8266, ESP32 and Arduino boards

From how to get started with download the Arduino IDE and its installation, going by how to program an arduino, until pinout (what is each pin or "leg" for).

You will find articles about the differences between an Arduino Uno and an Arduino Nano and when to use each board or tutorials on how to write Arduino programs, called Sketches. Of course everything in Spanish (although there is an automatic translation into English).

I write articles periodically, so it is very important that you subscribe to receive the news. Do it now, before you forget it!

RC Model Aircraft (Radio Control)

I love the radio controlled model aircraft. I've been practicing it for more years than you would think and I've flown planes, drones and helicopters, both electric and Glow or gasoline (that is, explosion engine). I love the FPV, especially if it is Long range, or Great Reach, and, above all, the gadget.

Do not stop subscribing in the form on the right, because I have material to write a lot of very interesting articles and I plan to write them little by little.

3d printers

I am a big fan of 3D printers. It seems to me an incredible technology and a transversal hobby because it helps me in the rest of my hobbies.

I started in 2014, with a PS3 Steel that I built asking for parts from half the world, I still have this printer, and for a couple of years I have a Creality CR-10S and the truth is that I am delighted with it, although I have made quite a few modifications. I have to say that for some things I still use the PS3 Steel because I have it "very fine" and it gives me better quality (depending on what things, as I say).

The first thing I did was install a 750 watt silicone heated bed at 220V, the following add auto leveling of the heated bed with BL Touch, then replace the controller with one of 32 bit. I will be writing articles about these things because I took photos of many of them and even recorded a video.

Homemade CNC Machine (Numerical Control Milling Machine)

3D printers gave me a lot of satisfaction and whetted my appetite to build more things, and it was inevitable ... the following was build a homemade CNC milling machine with Arduino (also called control milling machine numeric). Don't miss the articles I have written about it (and continue to write) because it is an incredible machine for working with wood, aluminum, plastics, making printed circuit boards and much more.

Laser engraving machines

And, yes, once again one thing led to another. I started by add a diode laser to the CNC milling machine but right away I built one CNC Laser dedicated with aluminum profiles and shortly after I bought a laser engraver CO2 really, it has allowed me to do a lot of things. Of course I have done so many modifications to the CO2 laser engraver it already looks little like the one I bought.


There are many other things in the world of electronics that I do, from designs, modifications, repairs, radio frequency, etc.. I'll be writing about it.

Where do I begin?

As you see i have many pending things to write about and I have to prioritize. I need help deciding what to write first. Share my Facebook page by clicking on the icon below and then tell me on my facebook page What do you want me to write. 

Above all, do not forget to subscribe, just below, so you do not miss anything.Do it now, do not forget!