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Input from a Sensor via GPIO 

Input from a Sensor via GPIO  | tecno4 | Scoop.it

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.

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Sensor de distancia con la Raspberry Pi

Sensor de distancia con la Raspberry Pi | tecno4 | Scoop.it

Hola y bienvenidos a al tutoral 7 de la serie de tutoriales de Raspberry Pi. En este tutorial, vamos a introducir el sensor de distancia ultrasónico HC-SR04, junto con el manejo de la entrada GPIO.

El sensor de distancia HC-SR04 mide la distancia basada en la emisión de una ráfaga de sonido y determina el tiempo que se tarda en recibir el eco. Usando una constante conocida que es la velocidad del sonido, podemos determinar matemáticamente la distancia de cualquier objeto delante de este sensor simplemente midiendo cuánto tiempo pasó mientras las ondas sonoras fueron emitidas, golpearon el objeto frente al sensor, rebotaron de nuevo y regresaron al sensor.

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RpiGarageDoorDistanceSensor: 6 Steps (with Pictures)

RpiGarageDoorDistanceSensor: 6 Steps (with Pictures) | tecno4 | Scoop.it

This tutorial will give you a step by step process on how to create a garage door distance sensor for when a car is entering a garage, with the raspberry pi.

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Raspberry Pi Distance Measurement usig HCSR04 Ultrasonic Sensor

Raspberry Pi Distance Measurement usig HCSR04 Ultrasonic Sensor | tecno4 | Scoop.it

In this project we are going to interface HC-SR04 Ultrasonic sensor module to Raspberry Pi to measure distance. We have previously used Ultrasonic sensor with Raspberry Pi to build Obstacle Avoiding Robot. Before going any further, lets know about Ultrasonic sensor.

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Cómo usar un sensor de distancia HC-SR04 con tu Raspberry Pi

Cómo usar un sensor de distancia HC-SR04 con tu Raspberry Pi | tecno4 | Scoop.it
Para muchos proyectos (al aire libre) una medición de distancia es necesaria o ventajosa. Estos pequeños módulos están disponibles a partir de 1-2 euros y pueden medir la distancia hasta 4-5 metros por ultrasonido y son sorprendentemente precisos. Este tutorial te quiere mostrar cómo conectarlos a una Raspberry Pi y su control.
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Using a Raspberry Pi distance sensor (ultrasonic sensor HC-SR04)

Using a Raspberry Pi distance sensor (ultrasonic sensor HC-SR04) | tecno4 | Scoop.it
For many (outdoor) projects a distance measurement is necessary or advantageous. These small modules are available starting at 1-2 bucks and can measure the distance up to 4-5 meters by ultrasound and are suprisingly accurate. This tutorial shows the connection and control.
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Raspberry Pi Distance Sensor: How to setup the HC-SR04

Raspberry Pi Distance Sensor: How to setup the HC-SR04 | tecno4 | Scoop.it
In this Raspberry Pi distance sensor tutorial, we will be utilizing the HC-SR04 Ultrasonic Sensor with our Raspberry Pi. This guide will go through showing you how to wire up the sensor with the Raspberry Pi as well as exploring how we can utilize the sensor also to read distance.
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