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Arduino Source Code for Water Flow Meter Sensor

water-flow-arduino-tutorial

water-flow-arduino-tutorial

As described in the article Water Flow Meter Sensor, this sensor can detect the flow of water passing through the sensor.

This sensor has three wires (red, black and yellow). Red cable is connected to VCC. Black cable is connected to GND. And the yellow cable is connected to the arduino data pin (digital pin number 2) but you will need to pull up this cable with a 10k resistor.

Once you finish making the hardware, you should upload this program to the Arduino software IDE.

The program will calculate the flow rate and sends it via the serial port (USB cable). To view the sensors data, you must connect a computer with the Arduino and see it through the terminal on the Arduino IDE software.

 

Arduino Program Source Code for Water Flow Meter Sensor :

volatile int NbTopsFan; //measuring the rising edges of the signal
int Calc;
int hallsensor = 2; //The pin location of the sensor

void rpm () //This is the function that the interupt calls
{
NbTopsFan++; //This function measures the rising and falling edge of the

hall effect sensors signal
}
// The setup() method runs once, when the sketch starts
void setup() //
{
pinMode(hallsensor, INPUT); //initializes digital pin 2 as an input
Serial.begin(9600); //This is the setup function where the serial port is

initialised,
attachInterrupt(0, rpm, RISING); //and the interrupt is attached
}
// the loop() method runs over and over again,
// as long as the Arduino has power
void loop ()
{
NbTopsFan = 0; //Set NbTops to 0 ready for calculations
sei(); //Enables interrupts
delay (1000); //Wait 1 second
cli(); //Disable interrupts
Calc = (NbTopsFan * 60 / 7.5); //(Pulse frequency x 60) / 7.5Q, = flow rate

in L/hour
Serial.print (Calc, DEC); //Prints the number calculated above
Serial.print (” L/hour\r\n”); //Prints “L/hour” and returns a new line
}

HC-SR04 Distance Sensor Arduino Source Code

hc-sr04 distance sensor and arduino wire

hc-sr04 distance sensor and arduino wire

HC-SR04 is a proximity sensor that is very widely used.

This sensor is very easy to use because it only needs a simple syntax for programming it. You can view the datasheet and specification of the sensor’s hc-sr04 here.

Sensor HC-SR04 is widely used as a sensor on the robot to detect objects around the robot. In this tutorial, use the Arduino Uno as the processor. While its pin configuration can be seen in the image above.

VCC and GND pins on the sensor is connected to the VCC and GND pins on the Arduino UNO. While Trig pin is connected to digital pin 11 on the Arduino UNO. And echo pin is connected to digital pin 12 on the Arduino UNO.

 

HC-SR04 Source code :

#define echoPin 7 // Echo Pin
#define trigPin 8 // Trigger Pin
#define LEDPin 13 // Onboard LED

int maximumRange = 200; // Maximum range needed
int minimumRange = 0; // Minimum range needed
long duration, distance; // Duration used to calculate distance

void setup() {
Serial.begin (9600);
pinMode(trigPin, OUTPUT);
pinMode(echoPin, INPUT);
pinMode(LEDPin, OUTPUT); // Use LED indicator (if required)
}

void loop() {
/* The following trigPin/echoPin cycle is used to determine the
distance of the nearest object by bouncing soundwaves off of it. */
digitalWrite(trigPin, LOW);
delayMicroseconds(2);

digitalWrite(trigPin, HIGH);
delayMicroseconds(10);

digitalWrite(trigPin, LOW);
duration = pulseIn(echoPin, HIGH);

//Calculate the distance (in cm) based on the speed of sound.
distance = duration/58.2;

if (distance >= maximumRange || distance <= minimumRange){
/* Send a negative number to computer and Turn LED ON
to indicate “out of range” */
Serial.println(“-1”);
digitalWrite(LEDPin, HIGH);
}
else {
/* Send the distance to the computer using Serial protocol, and
turn LED OFF to indicate successful reading. */
Serial.println(distance);
digitalWrite(LEDPin, LOW);
}

//Delay 50ms before next reading.
delay(50);
}

HC-SR04 Ultrasonic Distance Sensor

hc-sr04-distance-sensor

hc-sr04-distance-sensor

HC-SR04 is one of a proximity sensor. This sensor is very cheap, so many developers that use these sensors to the system they developed.

HC-SR04 can measure distances with ultrasonic wave method. This sensor has two part which is important, namely the transmitter and receiver. The transmitter will throw ultrasonic waves and will be reflected by a particular object. This reflected wave will be captured by the receiver. The delivery time can be determined from the calculation of the transmitting and catching time.

hc-sr04 distance sensor for arduino

hc-sr04 distance sensor for arduino

HC-SR04 has a 4 pin connector: VCC, Trig (T), echo (R), GND. VCC is connected to the voltage of 5V, GND connected to Ground, Trig (T) is connected to the data pin microcontroller, and echo (R) is connected to the data microcontroller (different pin).

– Model: HC-SR04
– Color: Blue + Silver
– Working voltage : 5V(DC)
– Static current: Less than 2mA.
– Output signal: Electric frequency signal, high level 5V, low level 0V.
– Sensor angle: Not more than 15 degrees.
– Detection distance: 2cm~450cm.
– High precision: Up to 3mm
– Mode of connection: VCC / trig(T) / echo(R) / GND
– Module Working Principle:
– Adopt IO trigger through supplying at least 10us sequence of high level signal
– The module automatically send eight 40khz square wave and automatically detect whether receive the returning pulse signal
– If there is signals returning, through outputting high level and the time of high level continuing is the time of that from the ultrasonic transmitting to receiving

 

hc-sr04 distance sensor and arduino wire

hc-sr04 distance sensor and arduino wire

For example, you can connect Trig (T) pin and echo (R) pin on the Arduino Uno as shown above. In the picture can be seen that Trig is connected to the pin number 11 and the echo is connected to the pin number 12. For source code and the programming tutorial you can read here.

Water Flow Meter Sensor for Arduino

Water flow sensor for arduino tutorial

Water flow sensor for arduino tutorial

Water flow meter sensor is a sensor that can detect the speed of water flow.

One of a flow sensor that is often used is the production of seeedstudio. Water flow meter sensor works based on half-effect sensors that are inside.

Half-effect sensors work by rotation of the turbine that is rotated by the flow of water. Water flow meter sensor is wrapped with a plastic body which has two holes as input and output streams.

Water flow sensor for arduino tutorial

Water flow sensor for arduino tutorial

Specifications Water Flow Meter Sensor

Mini. Wokring VoltageDC 4.5V
Max. Working Current15mA(DC 5V)
Working Voltage5V~24V
Flow Rate Range1~30L/min
Load Capacity≤10mA(DC 5V)
Operating Temperature≤80℃
Liquid Temperature≤120℃
Operating Humidity35%~90%RH
Water Pressure≤2.0MPa
Storage Temperature-25℃~+80℃
Storage Humidity25%~95%RH

 

Water flow datasheet

Water flow datasheet

Water flow arduino datasheet

Water flow arduino datasheet

Components of the water flow meter sensor

No.NameQuantityMaterialNote
1Valve body1PA66+33%glass fiber
2Stainless steel bead1Stainless steel SUS304
3Axis1Stainless steel SUS304
4Impeller1POM
5Ring magnet1Ferrite
6Middle ring1PA66+33%glass fiber
7O-seal ring1Rubber
8Electronic seal ring1Rubber
9Cover1PA66+33%glass fiber
10Screw4Stainless steel SUS3043.0*11
11Cable11007 24AWG

 

You can read data from these sensors water flow meter with arduino. For example, the schematic diagram will assist you in arranging a water flow meter in the arduino.

water-flow-sensor-for-arduino

water-flow-sensor-for-arduino