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/*
* code from http://www.robodino.de/2011/12/ultraschall-distanz-sensor-hc-sr04.html
*/
#define trigPin 31
#define echoPin 33
//#define led 11
//#define led2 10
void setup() {
Serial.println("Hello");
Serial.begin (9600);
pinMode(trigPin, OUTPUT);
pinMode(echoPin, INPUT);
// pinMode(led, OUTPUT);
// pinMode(led2, OUTPUT);
}
void loop() {
long duration, distance;
digitalWrite(trigPin, LOW); // Added this line
delayMicroseconds(2); // Added this line
digitalWrite(trigPin, HIGH);
// delayMicroseconds(1000); - Removed this line
delayMicroseconds(10); // Added this line
digitalWrite(trigPin, LOW);
duration = pulseIn(echoPin, HIGH);
distance = (duration/2) / 29.1;
if (distance < 4) { // This is where the LED On/Off happens
//digitalWrite(led,HIGH); // When the Red condition is met, the Green LED should turn off
//digitalWrite(led2,LOW);
}
else {
//digitalWrite(led,LOW);
//digitalWrite(led2,HIGH);
}
if (distance >= 400 || distance <= 0){
Serial.println("Out of range");
}
else {
Serial.print(distance);
Serial.println(" cm");
}
delay(1);
} |
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#define trigPin 31 #define echoPin 33 //#define led 11 //#define led2 10char blueToothVal; //value sent over via bluetooth char lastValue; //stores last state of device (on/off) void setup() { Serial.println("Hello"); Serial.begin (9600); pinMode(trigPin13, OUTPUT); } void pinModeloop(echoPin, INPUT); // pinMode(led, OUTPUT); // pinMode(led2, OUTPUT); } void loop() { long duration, distance; digitalWrite(trigPin, LOW); // Added this line delayMicroseconds(2); // Added this line digitalWrite(trigPin, HIGH); // delayMicroseconds(1000); - Removed this line delayMicroseconds(10); // Added this line digitalWrite(trigPin, LOW); duration = pulseIn(echoPin, HIGH); distance = (duration/2) / 29.1; if (distance < 4) { // This is where the LED On/Off happens //digitalWrite(led,HIGH); // When the Red condition is met, the Green LED should turn off //digitalWrite(led2,LOW); } else { //digitalWrite(led,LOW); //digitalWrite(led2,HIGH); } if (distance >= 400 || distance <= 0){ ) { if(Serial.available()>0) {//if there is data being recieved blueToothVal=Serial.read(); //read it } if (blueToothVal=='n') {//if value from bluetooth serial is n digitalWrite(13,HIGH); //switch on LED if (lastValue!='n') Serial.println(F("LED is on")); //print LED is on lastValue=blueToothVal; } else if (blueToothVal=='f') {//if value from bluetooth serial is n digitalWrite(13,LOW); //turn off LED if (lastValue!='f') Serial.println(F("OutLED ofis rangeoff")); //print } LED is else {on Serial.print(distance)lastValue=blueToothVal; Serial.println(" cm"); } delay(11000); } |
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#define trigPin 31 #define echoPin 33 //#define led 11 //#define led2 10 void setup() { Serial.println("Hello"); Serial.begin (9600); pinMode(trigPin, OUTPUT); pinMode(echoPin, INPUT); // pinMode(led, OUTPUT); // pinMode(led2, OUTPUT); } void loop() { long duration, distance; digitalWrite(trigPin, LOW); // Added this line delayMicroseconds(2); // Added this line digitalWrite(trigPin, HIGH); // delayMicroseconds(1000); - Removed this line delayMicroseconds(10); // Added this line digitalWrite(trigPin, LOW); duration = pulseIn(echoPin, HIGH); distance = (duration/2) / 29.1; if (distance < 4) { // This is where the LED On/Off happens //digitalWrite(led,HIGH); // When the Red condition is met, the Green LED should turn off //digitalWrite(led2,LOW); } else { //digitalWrite(led,LOW); //digitalWrite(led2,HIGH); } if (distance >= 400 || distance <= 0){ Serial.println("Out of range"); } else { Serial.print(distance); Serial.println(" cm"); } delay(1); } |