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microrobotics

LPS331AP Pressure/Altitude Sensor Carrier with Voltage Regulator

Apr 14th, 2023
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  1. /*
  2. The LPS331AP Pressure/Altitude Sensor Carrier with Voltage Regulator is an I2C-based sensor that can be used with a variety of microcontrollers. In this example, I'll provide you with an Arduino code to read the pressure and altitude from the sensor. Note that this code assumes you are using an Arduino Uno or a similar board.
  3.  
  4. First, connect the sensor to the Arduino as follows:
  5.  
  6. VIN to 5V
  7. GND to GND
  8. SDA to A4 (on Arduino Uno) or the dedicated SDA pin on other boards
  9. SCL to A5 (on Arduino Uno) or the dedicated SCL pin on other boards
  10. You will also need to install the "LPS331" library by Pololu in the Arduino IDE. You can find this library in the Library Manager or download it from the following link: https://github.com/pololu/lps-arduino/archive/master.zip
  11.  
  12. Upload this code to your Arduino and open the Serial Monitor. The sensor will output pressure in millibars and altitude in meters every second.
  13. */
  14.  
  15. // LPS331AP Pressure/Altitude Sensor Carrier with Voltage Regulator
  16. // Example code for Arduino
  17.  
  18. #include <Wire.h>
  19. #include <LPS.h>
  20.  
  21. LPS lps; // Create an instance of the LPS331AP sensor
  22.  
  23. void setup() {
  24.   Serial.begin(9600); // Initialize the serial communication
  25.   Wire.begin(); // Initialize the I2C communication
  26.  
  27.   if (!lps.init()) {
  28.     Serial.println("Failed to initialize the LPS331AP sensor");
  29.     while (1); // Halt the program if the sensor is not detected
  30.   }
  31.  
  32.   lps.enableDefault(); // Enable default settings
  33. }
  34.  
  35. void loop() {
  36.   float pressure = lps.readPressureMillibars(); // Read pressure in millibars
  37.   float altitude = lps.pressureToAltitudeMeters(pressure); // Convert pressure to altitude in meters
  38.  
  39.   Serial.print("Pressure: ");
  40.   Serial.print(pressure);
  41.   Serial.print(" mbar, Altitude: ");
  42.   Serial.print(altitude);
  43.   Serial.println(" meters");
  44.  
  45.   delay(1000); // Wait for 1 second before reading the sensor again
  46. }
  47.  
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