Security on your ESP32 with ESP-Now

Continuing with the tutorials about the ESP-Now protocol, today I bring you one about how to add security to ESP-Now communications. This is very important to give security to your project and prevent someone from spying on your communications, or even flooding it with data. Types of security keys The…

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ESP32: WiFi and ESP-Now simultaneously

If, like me, you have just started working with the ESP-Now WiFi protocol, surely you have used the basic example to test. This example will surely be similar to the one I discussed in my basic ESP-Now guide. If, after having started the ESP-Now communication, you have found that you…

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GPi Case Recalbox minor fixes guides

Greetings!, today I bring you some guides about how to fix some minor problem encountered in GPi Case Recalbox versions. I will add guides from time to time so this page will be updated Connect to the GPi using SSH To follow the most of the changes in this guide…

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ESP32: Getting started with Bluetooth

You have most likely chosen this microcontroller for its connectivity options. These include Bluetooth connectivity, and in this post we are going to learn the basics about how to use it. First of all, to have everything unified and not complicate myself, I use the Arduino IDE, although sometimes I…

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ESP32: Configuration and first steps

This time I am going to talk about how to start using our ESP32 microcontroller. In all traits this microcontroller is superior to most Arduinos, but it also consumes more power. This must be taken into account because depending on our project, it may be to kill flies with cannon…

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PCINT interrupts on Arduino

Today I am going to bring you something a little more advanced in Arduino, and it is the way to use PCINT Interrupts (Pin Changes interrupts), in Arduino. Earlier we talked about hardware interrupts (INT), which were limited to certain pins depending on the Arduino model. The advantages of PCINT…

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Contingency plan: protect your site against disasters

There has recently been a very big disaster at the hosting provider OVH. They have suffered a fire, and a complete datacenter and part of another have burned, leaving many websites and online games without service. Seeing things like this possibly caused by the lack of a contingency plan: https://twitter.com/playrust/status/1369611688539009025…

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Multithreaded on Raspberry Pi Pico (MicroPython)

One of the interesting things about the Raspberry Pi Pico is that it has two cores, which will allow us to perform multithreaded executions. If you don't know what multithreaded execution is, I'll tell you what your computer does and what allows you to have several programs open at the…

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Raspberry Pi Pico: Programming in micropython

Hello, today I bring you a basic tutorial on how to use a raspberry pi pico together with MicroPython, which will delight hobbyists. Mainly because it far exceeds the widely used ATMega328p in several respects. The technical differences between the two are as follows: Raspberry Pi PicoATMega328pCores21Architecture32 bits ARM8 Bits…

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