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This article goes into detail about the Raspberry Pi Pico and Pico W pinout. The Raspberry Pi Pico comes with 40 pins that can be used to connect electronic components like LEDs, motors, and sensors. Learn what each pin does, what it can be used for, and its specific functions.

The GPIO pins, placed on each Raspberry Pi model, are one of the best features to expand the device's capabilities. But, it's not easy to…

Los pines GPIO de la placa Raspberry Pi 4, la 3, y también de sus predecesores, dotan a la placa SBC de capacidades similares a las que puede tener Arduino, ya que con ellos puedes crear proyectos electrónicos muy interesantes controlados desde el sistema operativo mediante código en distintos lenguajes, como Python.

Eso hace que la placa sea algo más que un simple ordenador barato. Te va a permitir conectar multitud de elementos electrónicos que puedes usar con Arduino, pero que también pueden ser controlados desde la Pi. En esta guía intentaré darte toda la información posible sobre estos pines GPIO para que puedas comenzar a aprovecharlos…

Hello and welcome to part 7 of the Raspberry Pi tutorial series. In this tutorial, we're going to introduce a new sensor, the HC-SR04 ultrasonic distance sensor, along with handling GPIO input.
The HC-SR04 distance sensor measures distance based on emitting a sound burst, and timing how long it takes to receive the echo back. Using the known constant that is the speed of sound, we can mathmematically determine the distance of any object in front of this sensor by simply measuring how much time passed while the sound waves were emitted, hit the object in front of the sensor, bounced back, and came back to the sensor.

En el artículo anterior vimos qué eran los GPIO en una Raspberry Pi y la finalidad de cada uno.

Hoy os voy a contar cómo configurarlos para su uso como entrada/salida. Os enseñaré 2 formas de hacerlo: mediante el propio terminal de Raspbian y con Python.

Yo tengo Raspbian como sistema en mi Raspbery Pi y es el que utilizaré para explicaros todo esto. Si no sabéis como instalarlo aquí os cuento como.

Primeros pasos con Pines GPIO en Raspberry Pi

GPIO Pins on Raspberry Pi are a big feature you need to know
As I’m a Linux administrator, I mainly used it for testing systems and softwares in the first months
But to go further and create your own electronic systems and programs you need to learn how to use them
What is GPIO Pins and how to use them?
GPIO pins allow us to add extensions to your Raspberry Pi, whether with HATs or with your own circuits
The easiest way to use them is to create Python scripts, but you can also use Scratch or other softwares

It is possible to control GPIO pins using a number of programming languages and tools. See the following guides to get started:

• GPIO with Scratch 1.4
• GPIO with Scratch 2
• GPIO with Python

Warning: while connecting up simple components to the GPIO pins is perfectly safe, it's important to be careful how you wire things up. LEDs should have resistors to limit the current passing through them. Do not use 5V for 3V3 components. Do not connect motors directly to the GPIO pins, instead use an H-bridge circuit or a motor controller board.

In previous tutorial we have discussed about MQTT Protocol and installed local MQTT server on our Raspberry Pi for controlling the GPIO locally. But the drawback of local MQTT server is that we cannot control the GPIOs from anywhere in the world, it only provides services locally. But if this MQTT server is hosted on some cloud then any appliances connected to Raspberry Pi can be controlled globally.

Here, in this tutorial, we will use Adafruit IO as MQTT broker to control an AC appliance connected to Raspberry Pi GPIO. Also check other IoT controlled Home Automation tutorials:

• IOT based Voice Controlled Home Automation using ESP8266 and Android App
• Smart Phone Controlled Home Automation Using Arduino
• IoT based Web controlled Home Automation using PIC Microcontroller and Adafruit IO
• IoT based Web Controlled Home Automation using Raspberry Pi
• Google Assistant Based Voice Controlled Home Automation using DIY Arduino Wi-Fi Shield

En este enlace al Github de Rene Richarz están las instrucciones para instalar una aplicación que nos resultará muy útil porque muestra en la pantalla los pines de Raspberry y su estado (apagado, encendido…).

The Raspberry Pi 4 Model B and most recent versions of the Raspberry Pi have a double row of 40 GPIOs (General Purpose Input/Output Pins) that allow you to connect electronic components like LEDs and sensors. Some pins have specific functions like providing power, I2C, SPI, and UART communication protocols or PWM. In this guide, we’ll take a look at the Raspberry Pi GPIOs and their functions.

When we need to interface with sensors, motors, and displays we generally think about using an Arduino, however, there are a lot of advantages in using a Raspberry Pi instead. Today we will see how easy it is to interface devices using the Raspberry Pi GPIO.

The easiest way to work with the Raspberry Pi GPIO is to use a library.  There are several to choose from.

• WiringPi – This was one of the earliest GPIO libraries written for the Raspberry Pi.
• RPIO – A pretty advanced GPIO library.
• Pigpio – A Python module to interface with the GPIO. Also supported on other platforms.
• RPi.GPIO – A very popular GPIO library
• gpiozero –  A GPIO library that simplifies working with the GPIO.

We will be using the gpiozero library for our experiments, and we’ll get our Python code directly from the gpiozero documentation “Basic Recipes” section.

GPIO son las siglas de General Purpose Input/Output. Se trata de los pines que tienen todas las placas Raspberry Pi en uno de sus bordes. Los modelos anteriores a 2014 solo tenían 26 pines GPIO, pero las placas actuales disponen de 40: