Digital Pressure Sensor Raspberry Pi

To learn how to config raspberry pi please visit lesson 1.

Digital pressure sensor raspberry pi.

For weather stations and similar projects it is often important to determine the air pressure. You can sense almost anything with the large range of sensors we stock here at the pi hut. Because pressure changes with altitude yo. We will use raspberry pi to input these data from bmp180 sensor through ii2 interface and print the value in the terminal window.

The ds18b20 and ds18s20 represents a very simple sensor. Raspberry pi bmp180 digital pressure sensor python tutorial duration. An advantage is that many different 1 wire components can be connected in series and read out by a single gpio. Weatherpiardinuo v2 barometer for raspberry pi 24 99.

With the help of the barometer bmp180 the air pressure in hpa bar can be determined via the i c bus of the raspberry pi. It consists of a piezoresistive sensor whose main function is to convert the uncompensated analogue output voltage from pressure sensor to a 24 bit digital value providing 24 bit digital value for the temperature of the sensor. It s a great way to learn how to code whilst also makin. How to determine the temperature and humidity with sensors has already been shown in previous tutorials.

Sensors add almost human sensing capabilities to your projects taking real world events and converting them to analogue or digital signals for your microcontroller to read. Getting started with raspberry pi. However these modules can not measure additional information such as humidity and or air pressure. If you are familiar with the camjam edukits then you will already be familiar with a few sensors like the 1 wire temperature sensor a light dependent resistor and movement with the passive infrared pir sensor in this tutorial we are going to learn how to sense the outside world using a set of digital sensors on the tiny bmp180 board.

It is a high precision small size low power consumption sensor and can use with arduino raspberry pi boards. A variable value allows us to do more such as checking how much pressure is being applied and performing a different function depending on the result. Experimental principle bmp180 digital pressure sensor can detect pressure temperature and altitude. Raspberry pi ds18b20 temperature sensor tutorial duration.

An adc allows us to connect analog sensors and devices to the raspberry pi. It involves quite a bit more wiring but will allow us to get a variable value rather than a simple on or off.