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ESPHome: BMP180 sensor de temperatura y presión 
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Si hay un sensor simple y fiable ese es el BMP180. Que no te engañe su apariencia, ahí donde lo ves, este diminuto circuito puede proporcionarnos información de temperatura, presión atmosférica y altitud.
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The barometric pressure sensor BMP180 is designed to read the atmospheric pressure and thus indirectly estimate the height above sea level. The atmospheric pressure is the force exerted by the air (atmosphere) on the surface of the earth. The atmospheric pressure is due to the weight of the air column over a certain area, that is why when measuring the atmospheric pressure in higher altitude points, the pressure value is lower because the amount of air is lower. The atmospheric pressure also varies with the climate, mainly with the temperature, since it changes the density of the air, which is reflected in a change in the weight and therefore in a change of pressure.
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We will be using he Arduino board along with DHT11 sensor, BMP180 sensor and ESP8266 wifi module. The DHT11 sensor senses the temperature and humidity, while BMP180 sensor calculates the pressure and ESP8266 is used for internet connectivity. In our previous project, we already learnt to use the DHT11 sensor to monitor temperature and humidity with Arduino, here in this project, we are adding another sensor (BMP180) to make a complete weather station using Arduino. Sending these data to ThingSpeak enables live monitoring from anywhere in the world and we can also view the logged data which will be stored on their website and even graph it over time to analyze it.
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There are a wide variety of temperature sensors compatible with Arduino, ESP32, ESP8266 and other development boards. So, it can be difficult to to pick up the most suitable sensor for your project. In this article, we’ll compare 6 widely used temperature sensors: DHT11, DHT22, LM35, DS18B20, BME280 and BMP180.
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En una de las entradas de este blog, Presión y temperatura con LCD Keypad Shield y BMP180, interesaba añadir un sensor más que pudiera registrar la humedad relativa (Hr). La humedad del ambiente tiene una gran relevancia en nuestra vida cotidiana, ya que repercute en el confort, en la salud, y en la duración o conservación de alimentos, por ejemplo. La cantidad de vapor de agua que está presente en el ambiente determina el grado de humedad presente en el mismo. El sensor DHT22 nos brinda la temperatura y la humedad relativa del ambiente.
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BMP180 Sensor de Presión Barométrica y Temperatura conectado al Arduino y volando sobre el Drone Mavic Mini
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Humidity, Temperature and Pressure are three important environmental parameters to decide the weather conditions of a particular location. So in this DIY IoT project session, we are making a Raspberry Pi weather station using DHT11 and BMP180 sensors. Where the DHT11 sensor senses the temperature and humidity while BMP180 sensor calculates the pressure. In our previous project, we have used the DHT11 sensor to detect temperature and humidity, and now in this project, we are adding another sensor to make a complete weather station using Raspberry Pi. Further, we are sending the weather station data to ThingSpeak for live monitoring from anywhere in the world, and we can view the logged data and graph over time on the website. You can also choose any other IoT platform to monitor the real-time data.
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Un barómetro digital es un dispositivo que mide la presión del aire y que puede usarse como altímetro. Podemos conectar este sensor a un autómata o procesador como Arduino para registrar la medición de la presión del aire o estimar la altitud del sensor respecto al nivel del mar.
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