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/* SFM3000wedo.cpp - Library for reading values from flowmeter Sensirion SFM3000wedo https://www.sensirion.com/en/flow-sensors/mass-flow-meters-for-high-precise-measurement-of-gases/low-pressure-drop-mass-flow-meter/

Created by WeDo, Zuerich 20170616

Based on: https://forum.arduino.cc/index.php?topic=466234.0 - thanks slomobile & nickgammon

Released into the public domain. */

Installation

Download arduino-sfm3000wedo either via git or from the releases page and place it in the Arduino/libraries directory. After restarting the Arduino IDE, you will get menu items under libraries and examples.

Integrating it into your sketch

Assuming you installed the library as described above, the following steps are necessary:

  1. Import the Wire library like this: From the menu bar, select Sketch > Import Library > Wire
  2. Import the arduino-sfm3000wedo library like this: From the menu bar, select Sketch > Import Library > arduino-sfm3000wedo
  3. Create an instance of the sfm3000wedo class, with the I2C address of the sensor as parameter (check datasheet, standard is 0x40 equals 64) -> sfm3000wedo measflow(64);
  4. In setup(), make sure to init the library: sfm3000wedo.init()
  5. If you want to use the serial console, remember to initialize the Serial library with Serial.begin(9600)
  6. Finally, call measflow.getvalue() in the loop() function, which returns a float value of the current flow

Find example code in folder "examples"