Electronics, ESP8288 and ESP32, Arduino, CNC, Aeromodelling and more

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About Mariete's Blog:

In this Blog you will find useful and fun information about the things I'm passionate about, and which, I imagine (since you're here), you are too. My motto is "not a day without tinkering". and I try to stick to it. It may not be every day that I set out to solder an electronic project, or to program, but rare is the day that I don't search for information and spend some time learning, while I think about what can i do next.

Miniature with a solar panel on yuan banknotes, a man's surprised face and large text in Spanish asking if the Chinese solar panels on AliExpress are cheating.

Real Solar Panel Power: Are AliExpress Sellers Misleading Us?

Have you bought a 1W or 2W mini solar panel and it doesn't work as expected? Find out why lab specifications do not guarantee real performance ...
Several small solar panels stacked next to a microcontroller-type electronic board on a sandy beach and turquoise sea with a blue and white umbrella, accompanied by the large text at the top "LOW POWER SOLAR PANELS" and at the bottom "THE SECRET IS MPPT!

Low-Power Solar Panels: MPPT is the Secret to Running Your ESP32 on Just 1W

We've seen a lot of cool home projects with solar panels, but the reality is that energy efficiency is a battleground. If you've tried powering an ESP32 or ...
Microcontrollers and electronic components for ESP32, ESP8266 and Arduino projects at emariete.com.

Controlling the electronic load with MOSFETs with an ESP32 - Basics

Learn how to control an electronic load with MOSFETs and an ESP32, improving your projects with automation, graphs and tests from the browser ...
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ESP32 Relay Board x8

Learn all about the ESP32 Relay Board x8: 8-relay control, easy programming and applications in home automation, irrigation and automation from scratch, with explanations and code ...
Control board for electronic projects and Arduino, easy to assemble and with high autonomy.

CO2 Gadget Low Power CO2 monitor with Lilygo TTGO T5 ePaper and Sensirion SCD41 Sensor

A low-power CO2 meter with a 90-day autonomy on a single charge? Not bad, not bad at all...
Components for variable voltage generation with Arduino, ESP8266 and ESP32 for electronic projects.

Generating variable voltage with Arduino, ESP8266 and ESP32

Let's see how we can generate a variable voltage with Arduino, ESP8266 and ESP32 using different techniques ...
Electronic charging with mosfet for pack and transport animals.

Electronic load with MOSFET, easy

We are going to build a constant current variable electronic load, easy and with few components, to do experiments ...
Raspberry Pi board with WPM Mini Hat module, innovative technological project, key piece for automation.

eMariete PWM Mini Hat for Raspberry Pi

Build a small Hat for Raspberry Pi to easily connect a fan, LEDs, a motor or whatever you want! ...

Tutorial: Temperature-controlled variable speed fan for Raspberry Pi

Do you, like me, want to reduce (or even eliminate) the annoying noise of the Raspberry Pi 4 fan? If so, here is the ultimate solution. Easy and cheap ...

PWM driver with MOSFET transistor

Learn how to build, and how it works, a PWM driver with a MOSFET transistor! ...
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CO2 meters with Arduino, ESP8266, ESP32, etc.

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

Here you will find lots of useful informationif you want to build a CO2 meter.

Tutorials for building CO meters, CO2 sensor comparisons, sensor analysis, unboxings of commercial CO2 meters, schematics, options, etc.

Projects with ESP8266, ESP32 and Arduino boards

From how to start with the Arduino IDE download and installationthrough how to program an Arduinoto its pinout (what each pin or "leg" is for).

You will find articles on 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, all in English (although there is an automatic translation into English).

I write articles periodicallyIt is therefore very important that you subscribe to receive the latest news. Do it nowbefore you forget!

RC Model Aircraft (Radio Control)

I love the radio-controlled aeromodelling. I've been practising it for more years than you'd think and I have flown planes, drones and helicoptersboth electric and glow or petrol (i.e., electric, glow or petrol), explosion engine). I love the FPVespecially if it is Long Range (Great Reach), and above all, caching.

Don't stop subscribing, 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. I find it an amazing technology and a cross-cutting hobby because it helps me in all my other hobbies.

I started in 2014, with a P3 Steel que construí pidiendo piezas a medio mundo, aún conservo esta impresora, y pasé a una Creality CR-10S (la verdad es que estoy encantado con ella, aunque le he hecho bastantes modificaciones) y más recientemente una Creality K1 Max. He de decir que para algunas cosas sigo utilizando la P3 Steel porque la tengo «muy fina» y me da muy buena calidad.

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've written about it (and continue to write) because it's an amazing machine for woodworking, aluminium, plastics, making printed circuit boards and much more.

Laser engraving machines

And, yes, again one thing led to another. I started by adding a diode laser to the CNC milling machine but I quickly built myself a CNC Laser with aluminium profiles and shortly afterwards I bought a laser engraver. of CO2 It has really allowed me to do a lot of things. Of course I have done so many modifications The CO2 laser engraver already bears little resemblance to the one I bought.

Electronics

There are many other things in the world of electronics that I do, from designs, modifications, repairs, radio frequency, etc..