#include <Arduino.h>
#include <SoftwareSerial.h>
#include <DFRobotDFPlayerMini.h>
SoftwareSerial mySoftwareSerial(10, 11); // RX, TX
DFRobotDFPlayerMini myDFPlayer;
int left_trigPin = 7;
int left_echoPin = 6;
int right_trigPin = 2;
int right_echoPin = 3;
int center_trigPin = 4;
int center_echoPin = 5;
void setup() {
pinMode(left_trigPin, OUTPUT);
pinMode(left_echoPin, INPUT);
pinMode(right_trigPin, OUTPUT);
pinMode(right_echoPin, INPUT);
pinMode(center_trigPin, OUTPUT);
pinMode(center_echoPin, INPUT);
Serial.begin(115200);
mySoftwareSerial.begin(9600);
Serial.begin(115200);
Serial.println();
Serial.println(F("DFRobot DFPlayer Mini Demo"));
Serial.println(F("Initializing DFPlayer ... (May take 3~5 seconds)"));
if (!myDFPlayer.begin(mySoftwareSerial)) { //Use softwareSerial to communicate with mp3.
Serial.println(F("Unable to begin:"));
Serial.println(F("1.Please recheck the connection!"));
Serial.println(F("2.Please insert the SD card!"));
while (true) {
delay(0); // Code to compatible with ESP8266 watch dog.
}
}
Serial.println(F("DFPlayer Mini online."));
myDFPlayer.volume(10);
//myDFPlayer.setLoopMode(myDFPlayer_LOOP_NONE);
}
void loop() {
left();
right();
center();
}
void left() {
delay(500);// reading will be taken after ....miliseconds
Serial.println("\n");
int duration, distance;
digitalWrite (left_trigPin, HIGH);
delayMicroseconds (10);
digitalWrite (left_trigPin, LOW);
duration = pulseIn (left_echoPin, HIGH);
distance = (duration / 2) / 29.1;
//distance= duration*0.034/2;
if (distance < 30) { // Change the number for long or short distances.
Serial.print("Left Distance");
Serial.print(distance);
myDFPlayer.play(2);
}
}
void right() {
delay(500);// reading will be taken after ....miliseconds
Serial.println("\n");
int duration, distance;
digitalWrite (right_trigPin, HIGH);
delayMicroseconds (10);
digitalWrite (right_trigPin, LOW);
duration = pulseIn (right_echoPin, HIGH);
distance = (duration / 2) / 29.1;
if (distance < 30) { // Change the number for long or short distances.
Serial.print("Right Distance");
Serial.print(distance);
myDFPlayer.play(3);
}
}
void center() {
delay(500);// reading will be taken after ....miliseconds
Serial.println("\n");
int duration, distance;
digitalWrite (center_trigPin, HIGH);
delayMicroseconds (10);
digitalWrite (center_trigPin, LOW);
duration = pulseIn (center_echoPin, HIGH);
distance = (duration / 2) / 29.1;
if (distance < 30) { // Change the number for long or short distances.
Serial.print("Center Distance");
Serial.print(distance);
myDFPlayer.play(1);
}
}
I use the above code ...i.,e the three ultra sonic sensor on object detection, the df player mini module will play th mp3 audio file in sd card by speaker...the code seems got verified by arduino software but i dont get an audio output on object detection...(we use us sensor Hc-SRO4,dfplayer mini, ardrino UNO, 5 watt speaker...
kindly any one help me out with this ie,. is there any technical error!
thank you