Diferencia entre revisiones de «Sensor de proximidad infrarrojo»

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@@ Línea 34: / Línea 34: @@
 }
 </pre>
+* DFRobotDFPlayerMini
+<pre>
+/***************************************************
+DFPlayer - A Mini MP3 Player For Arduino
+ <https://www.dfrobot.com/product-1121.html>
+ ***************************************************
+ This example shows the basic function of library for DFPlayer.
+ Created 2016-12-07
+ By [Angelo qiao](Angelo.qiao@dfrobot.com)
+ GNU Lesser General Public License.
+ See <http://www.gnu.org/licenses/> for details.
+ All above must be included in any redistribution
+ ****************************************************/
+/***********Notice and Trouble shooting***************
+.Connection and Diagram can be found here
+ <https://www.dfrobot.com/wiki/index.php/DFPlayer_Mini_SKU:DFR0299#Connection_Diagram>
+.This code is tested on Arduino Uno, Leonardo, Mega boards.
+ ****************************************************/
+#include "Arduino.h"
+#include "DFRobotDFPlayerMini.h"
+#if (defined(ARDUINO_AVR_UNO) || defined(ESP8266))   // Using a soft serial port
+#include <SoftwareSerial.h>
+SoftwareSerial softSerial(/*rx =*/4, /*tx =*/5);
+#define FPSerial softSerial
+#else
+#define FPSerial Serial1
+#endif
+DFRobotDFPlayerMini myDFPlayer;
+void printDetail(uint8_t type, int value);
+void setup()
+{
+#if (defined ESP32)
+  FPSerial.begin(9600, SERIAL_8N1, /*rx =*/D3, /*tx =*/D2);
+#else
+  FPSerial.begin(9600);
+#endif
+  Serial.begin(115200);
+  Serial.println();
+  Serial.println(F("DFRobot DFPlayer Mini Demo"));
+  Serial.println(F("Initializing DFPlayer ... (May take 3~5 seconds)"));
+  while (!myDFPlayer.begin(FPSerial, /*isACK = */true, /*doReset = */true)) {  //Use serial 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.
+    //}
+    delay(1000);
+  }
+  Serial.println(F("DFPlayer Mini online."));
+  myDFPlayer.volume(10);  //Set volume value. From 0 to 30
+ // myDFPlayer.play(1);  //Play the first mp3
+  myDFPlayer.loop(1);
+}
+void loop() {
+  for (int i = 0; i < 30; i++) {
+    myDFPlayer.volume(i);
+    delay(100);
+  }
+  for (int i = 30; i > 0; i--) {
+    myDFPlayer.volume(i);
+    delay(100);
+  }
+  //delay(50);
+ // static unsigned long timer = millis();
+ // if (millis() - timer > 3000) {
+//timer = millis();
+  //  myDFPlayer.next();  //Play next mp3 every 3 second.
+  //}
+ // if (myDFPlayer.available()) {
+  //  printDetail(myDFPlayer.readType(), myDFPlayer.read()); //Print the detail message from DFPlayer to handle different errors and states.
+ // }
+}
+void printDetail(uint8_t type, int value){
+  switch (type) {
+    case TimeOut:
+      Serial.println(F("Time Out!"));
+      break;
+    case WrongStack:
+      Serial.println(F("Stack Wrong!"));
+      break;
+    case DFPlayerCardInserted:
+      Serial.println(F("Card Inserted!"));
+      break;
+    case DFPlayerCardRemoved:
+      Serial.println(F("Card Removed!"));
+      break;
+    case DFPlayerCardOnline:
+      Serial.println(F("Card Online!"));
+      break;
+    case DFPlayerUSBInserted:
+      Serial.println("USB Inserted!");
+      break;
+    case DFPlayerUSBRemoved:
+      Serial.println("USB Removed!");
+      break;
+    case DFPlayerPlayFinished:
+      Serial.print(F("Number:"));
+      Serial.print(value);
+      Serial.println(F(" Play Finished!"));
+      break;
+    case DFPlayerError:
+      Serial.print(F("DFPlayerError:"));
+      switch (value) {
+        case Busy:
+          Serial.println(F("Card not found"));
+          break;
+        case Sleeping:
+          Serial.println(F("Sleeping"));
+          break;
+        case SerialWrongStack:
+          Serial.println(F("Get Wrong Stack"));
+          break;
+        case CheckSumNotMatch:
+          Serial.println(F("Check Sum Not Match"));
+          break;
+        case FileIndexOut:
+          Serial.println(F("File Index Out of Bound"));
+          break;
+        case FileMismatch:
+          Serial.println(F("Cannot Find File"));
+          break;
+        case Advertise:
+          Serial.println(F("In Advertise"));
+          break;
+        default:
+          break;
+      }
+      break;
+    default:
+      break;
+  }
+}
+</pre>
+= Circuitos =
+<gallery>
+LED-LDR-VCA.gif | VCA usando un LDR
+</gallery>
+= LDR VCA =
+{| class="wikitable"
+|-
+| Id (mA) || R
+|-
+| 2 || 2k
+|-
+| 4 || 1.3k
+|-
+| 8 || 835
+|-
+| 20 || 500
+|}