Example Code for Arduino-Data Measurement

Hardware Preparation

• DFRduino UNO R3 (or similar) x 1
• LWLP Differential Pressure Sensor x1
• Wires

Software Preparation

• Arduino IDE
• Download and install the Differential Pressure Sensor Library. (About how to install the library?)

Wiring Diagram

In order to ensure the measurement resolution and the sensor life, please use the sensor in the clean air. Do not let water enter the nozzle of the sensor, or it will cause damage to the sensor.

Sample Code

/*!
 * @file readData.ino
 * @brief Read sensor pressure difference and temperature value
 * @copyright   Copyright (c) 2010 DFRobot Co.Ltd (http://www.dfrobot.com)
 * @licence     The MIT License (MIT)
 * @author [fengli]([email protected])
 * @version  V1.0
 * @date  2020-05-14
 * @get from https://www.dfrobot.com
 * @url https://github.com/DFRobot/DFRobot_LWLP
 */
#include <DFRobot_LWLP.h>

/*! 
 * @brief Construct the function
 * @param pWire IC bus pointer object and construction device, can both pass or not pass parameters, Wire in default.
 * @param address Chip IIC address, addresses 0x0 
 */
DFRobot_LWLP lwlp;


void setup() {

  Serial.begin(9600);
  //Init Chip
  while (lwlp.begin() != 0) {
  Serial.println("Failed to initialize the chip, please confirm the chip connection");
  delay(1000);
  }
}
void loop(void){
  DFRobot_LWLP::sLwlp_t data;
  //Get data of single measurement 
  data = lwlp.getData();
  //Get data processed by the filter 
  //data = lwlp.getfilterData();
  //Get temperature in unit centigrade degree
  Serial.print("Temperature: ");
  Serial.print(data.temperature);
  Serial.println(" C");
  Serial.print("Differential Pressure: ");
  //Get pressure difference in unit pa 
  Serial.print(data.presure);
  Serial.println(" pa");
  delay(500);

}

Result