فرکانس متر با آردینو

[cjmj]

#define input 4
//#define in 8
#define F1 15
#define F2 16
#define F3 17
#define F4 13
unsigned int high_time;
//int h_time;
unsigned int low_time;
//int l_time;
float time_period;
//float t_period;
float frequency;
//float frequenc;

void setup()
{
pinMode(input,INPUT_PULLUP);
//pinMode(in,INPUT);
pinMode(F1,OUTPUT);
pinMode(F2,OUTPUT);
pinMode(F3,OUTPUT);  
pinMode(F4,OUTPUT);

Serial.begin(9600);
}
void loop()
{

high_time=pulseIn(input,HIGH);
low_time=pulseIn(input,LOW);

time_period=high_time+low_time;
time_period=time_period/1000;
frequency=1000/time_period;

/*
h_time=pulseIn(in,HIGH);
l_time=pulseIn(in,LOW);
 
t_period=h_time+l_time;
t_period=t_period/1000;
frequenc=1000/t_period;
*/


//Serial.print('frequenc');
Serial.println(frequency);
//Serial.print(" Hz");


 if (frequency >= 17){
  digitalWrite (F1, HIGH);
  }
       else if (frequency <=16 ) 
       {
       digitalWrite (F1, LOW);
       }

 if (frequency >= 25){
  digitalWrite (F2, HIGH);
  }
       else if (frequency <= 24) 
       {
       digitalWrite (F2, LOW); 
       }

 if (frequency >= 38){
  digitalWrite (F3, HIGH);
  }
       else if (frequency <= 37) 
       {
       digitalWrite (F3, LOW); 
       }
 if (frequency >= 49){
  digitalWrite (F4, HIGH);
 }
       else if (frequency <=48){
        digitalWrite (F4, LOW);
 }
 delay(50);
}

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