Water Flow Sensor 1-30L/min (Flow meter YF-S201) G1/2 Black (Sea) YF-S201
Water flow sensor consists of a plastic valve body, a water rotor, and a hall-effect sensor. When water flows through the rotor, rotor rolls. Its speed changes with different rate of flow. The hall-effect sensor outputs the corresponding pulse Signal.
F= (7.5*Q), F is Frequency Units Hz, Q is Flux Unit L/Min
1 x Water Flow Sensor
Reading Water Flow rate with Water Flow Sensor:
You can read water flow rate in liters per hour using the Water Flow Sensor found UrukTech. It uses a simple rotating wheel that pulses a Hall Effect sensor. By reading these pulses and implementing a little math, we can read the liquids flow rate accurate to within 3%. The threads are simple G3/4 so finding barbed ends will not be that hard.
You will need Arduino, Water Flow Sensor, 10K resistor, a breadboard and some jumper wires. Wiring up the Water Flow Sensor is pretty simple. There are 3 wires: Black, Red, and Yellow. Black to the Arduino’s ground pin Red to Arduino’s 5v pin, where the yellow wire will need to be connected to a 10k pull up resistor, and then to pin 2 on the Arduino.
Here is the diagram to show you how to wire it all up.