Using YF-G21's from Seeed Studios I have this code but can't figure out how to get it to read from more than one sensor:
// reading liquid flow rate using Seeeduino and Water Flow Sensor from Seeedstudio.com
// Code adapted by Charles Gantt from PC Fan RPM code written by Crenn @thebestcasescenario.com
// http:/themakersworkbench.com http://thebestcasescenario.com http://seeedstudio.com
/*
+5v red
ground black
yellow to resistor and +5v and pin 2
http://www.themakersworkbench.com/?q=node/399
*/
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
}
I was also trying to get it to flash an LED to give me an indication as to the flow-rate (this also includes some of the code I was trying to use for 3 sensors):
// reading liquid flow rate using Seeeduino and Water Flow Sensor from Seeedstudio.com
// Code adapted by Charles Gantt from PC Fan RPM code written by Crenn @thebestcasescenario.com
// http:/themakersworkbench.com http://thebestcasescenario.com http://seeedstudio.com
/*
+5v red
ground black
yellow to resistor and +5v and pin 2
http://www.themakersworkbench.com/?q=node/399
*/
volatile int NbTopsFan; //measuring the rising edges of the signal
int Calc;
int hallsensor1 = 8; //The pin location of the sensor
int hallsensor2 = 9; //The pin location of the sensor
int hallsensor3 = 10; //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(hallsensor1, INPUT); //initializes digital pin 2 as an input
pinMode(hallsensor2, INPUT); //initializes digital pin 2 as an input
pinMode(hallsensor3, INPUT); //initializes digital pin 2 as an input
Serial.begin(9600); //This is the setup function where the serial port is initialised,
attachInterrupt(0, rpm0, RISING); //and the interrupt is attached
attachInterrupt(1, rpm1, RISING); //and the interrupt is attached
attachInterrupt(2, rpm2, RISING); //and the interrupt is attached
pinMode(6, OUTPUT);
pinMode(5, OUTPUT);
pinMode(4, OUTPUT);
}
// 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);
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
blinkLED(4, abs(Calc/100));
NbTopsFan = 0; //Set NbTops to 0 ready for calculations
sei(); //Enables interrupts
delay (1000);
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
blinkLED(5, abs(Calc/100));
}
void blinkLED(int ledNum, int blinkCount){
for (int x = 0; x < blinkCount; x++) {
Serial.println(x);
digitalWrite(ledNum,HIGH);
delay (5000);
digitalWrite(ledNum,LOW);
delay (5000);
}
}
I have a few different arduinos, one's a mega so I'll try that.