A simple example of how to use Adafruit's BMP388 temperature/pressure as a barometric altimeter.
Code By: Michael Wrona | YouTube: MicWro Engr
This Arduino code uses Adafruit's BMP388 temperature/pressure sensor to create a barometric altimeter. This code demonstrates using the Hypsometric Equation to convert changes in atmospheric presure to changes in altitude. The code can be easily modified to accomodate other sensors by changing how data is pulled from the sensor.
First, the code measures and stores the average atmospheric pressure at ground-level. Then, the Hypsometric equation is used to convert subsequent pressure measurements into changes in altitude. The virtual temperature constant in the code can be modified to suit the user's ambient operating enviroment.
In order to use this code as-is, you must have Adafruit's BMP3XX Sensor Library and Unified Sensor Driver installed in your Arduino libraries folder.
You must own Adafruit's BMP388 sensor to use this code as-is (duh). Please connect your sensor according to its data sheet or online resources. I wired the BMP388 in its I2C configuration, so here's the wiring for my Arduino Uno:
- BMP388 VIN: Arduino Uno 3.3V
- BMP388 GND: Arduino Uno GND
- BMP388 SCK: Arduino Uno A5
- BMP388 SDI: Arduino Uno A4