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int v,vmax,pin = 7;

void setup() 
{ Serial.begin(9600);
  pinMode(pin, INPUT);
}

void loop() 
{unsigned long T;          // Periodendauer in us
 double f;                 // Frequenz in MHz 
 char s[20];               // Ausgabestring
 vmax=0;                   // 
 Serial.println("ready");  // Trigger;
 while( digitalRead(pin)); 
 while(!digitalRead(pin));
 for(int i=0;i<16;i++)     // 16 Messungen (LCD)
 {T = pulseIn(pin, HIGH) + pulseIn(pin, LOW);
  f=1/(double)T;           // f=1/T   
  v=int((f*1e6)/44.0);     // 24 GHz Radar
  vmax=max(v,vmax);        // Schleppzeiger
  Serial.print(">");       // 16 Punkte (LCD)
 } 
 sprintf(s,"%3d km/h",vmax);
 Serial.println(s);        // Ausgabe
 delay(2000);              // 2 Sekunden
}

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#include <LiquidCrystal.h>
LiquidCrystal lcd(12, 11, 5, 4, 3, 2);
int v,vmax,pin = 7;

void setup() 
{ lcd.begin(16, 2);
  lcd.print("Arduino-Radar");
  pinMode(pin, INPUT);
  pinMode(13,OUTPUT);
}

void loop() 
{unsigned long T;          // Periodendauer in us
 double f;                 // Frequenz in MHz 
 char s[20];               // Ausgabe
 vmax=0;                   // 
 lcd.setCursor(0, 1);lcd.print("Ready ...       ");
 while( digitalRead(pin)); 
 while(!digitalRead(pin));
 for(int i=0;i<16;i++)    // 16 Messungen (LCD)
 {T=pulseIn(pin,HIGH)+pulseIn(pin,LOW);
  f=1/(double)T;          // f=1/T   
  v=int((f*1e6)/44.0);    // 24 GHz Radar
  vmax=max(v,vmax);       // Schleppzeiger
  lcd.setCursor(i, 1);lcd.print(">");
 } 
 sprintf(s,"%3d km/h",vmax);
 lcd.setCursor(0, 0);
 lcd.print("Gemessen");lcd.print(s);
 lcd.setCursor(0, 1);lcd.print("================");
 delay(2000);             // 2 Sekunden
}

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#define LED 13
#define PIN 7

void setup() 
{pinMode(PIN,INPUT); pinMode(LED,OUTPUT);}

void loop() 
{while(!digitalRead(PIN)); while(digitalRead(PIN));
 delay(50);  digitalWrite(LED,HIGH);
 delay(4000);digitalWrite(LED,LOW );// 4 Sekunden
}

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#define LED 13
#define PIN 7

void setup() 
{pinMode(PIN,INPUT); 
 pinMode(LED,OUTPUT);
 Serial.begin(9600);
}

void loop() 
{while(!digitalRead(PIN)); 
 while( digitalRead(PIN));
 delay(50);
 Serial.println("Hier spricht der Arduino.");
 digitalWrite(LED,HIGH);
 delay(4000);            // 2 Sekunden
 digitalWrite(LED,LOW);
}

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int v,vmax,pin = 7;

void setup() 
{Serial.begin(9600);
 pinMode(pin, INPUT); pinMode(13,OUTPUT);
}

void loop() 
{unsigned long T;        // Periodendauer in us
 double f;               // Frequenz in MHz 
 char s[40];             // Ausgabe
 vmax=0;                 // Maximalwert
 while(digitalRead(pin)); while(!digitalRead(pin));
 digitalWrite(13,HIGH);
 for(int i=0;i<5;i++)    // 5 Messungen 
 {T = pulseIn(pin, HIGH) + pulseIn(pin, LOW);
  f=1/(double)T;         // f=1/T   
  v=int((f*1e6)/44.0);   // 24 GHz Radar
  vmax=max(v,vmax);      // Schleppzeiger
 }
 // Für das Smartphone via HC06-Bluetooth
 sprintf(s,"Maximale Geschwindigkeit: %3d km/h",vmax);
 Serial.println(s);      // Ausgabe
 delay(4000);            // 4 Sekunden
 digitalWrite(13,LOW);   
}

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PRINT "Radarblitz-Test mit HC-06/Arduino."
PRINT "Doppler-Modul mit 24 GHz HB 2867 an Pin 7,"
PRINT "Arduino sendet die Geschwindigkeit"
PRINT "mit Serial.println .... via Bluetooth."
PRINT "Das Smartphone macht ein Blitzfoto."
PRINT "Suche Gerät im Äther..."
INCLUDE btopen.bas
PAUSE 2000
CLS
DO
 PRINT "ready to shoot"
 INCLUDE btread.bas
 GR.OPEN 255,16,16,16
 INCLUDE camerashoot.bas
 GR.CLOSE
 PRINT a$
 PAUSE 500
 BT.STATUS s
UNTIL s<>3
BT.CLOSE
END

ONERROR:
END