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Arduino code and video ISD1820 Arduino Voice Recorder

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This is the Arduino code and video ISD1820 Arduino Voice Recorder

1. ISD1820 Arduino Voice Recorder Manual (pdf)
2. ISD1800 Series Datasheet (pdf)

 /*
 * ISD1820 Arduino Voice Recorder
 * to record and playback sound using Arduino and ISD1820 Sound Recorder

 * Watch the video https://youtu.be/IfK8z_o5vbk
 * get this code from http://robojax.com/learn/arduino/
 * Get this code and other Arduino codes from Robojax.com
 
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/*
 * ISD1820 Arduino Voice Recorder
 * Code Written by Ahmad Shamshiri for Robojax.com
 * on Jan 04, 2018 at 08:57, in Ajax, Ontario, Canada
  * Permission granted to share this code given that this
 * note is kept with the code.
 * Disclaimer: this code is "AS IS" and for educational purpose only.
 */
#define REC 2 // pin 2 is used for recording
#define PLAY_E 3 // pin 3 is used for playback-edge trigger
// when PLAY_E goes HIGH device will playbak STARTS and continues
// ISD1820 Arduino Voice Recorder for Robojax.com 

#define PLAY_L 4 // pin 4 is used for playback  
// when PLAY_L is HIGH it will playback. As soon as it goes LOW playback STOPS
// So you have to keep it HIGH to keep playing


#define FT 5 // pin 5 is used for feed through
// if the SPI (speaker) pin is used to send Audio to other device, 
// set FT to high and any audio from microphone will pass through the SPI connector
// and will NOT record

#define playTime 5000 // playback time 5 seconds
#define recordTime 3000 // recording time 3 seconds
#define playLTime 900 // press and release playback time 0.9 seconds

void setup() 
{
  // ISD1820 Arduino Voice Recorder for Robojax.com 
  pinMode(REC,OUTPUT);// set the REC pin as output
  pinMode(PLAY_L,OUTPUT);// set the PLAY_L pin as output
  pinMode(PLAY_E,OUTPUT);// set the PLAY_e pin as output
  pinMode(FT,OUTPUT);// set the FT pin as output  
  Serial.begin(9600);// set up Serial monitor   
}

void loop() {
  // ISD1820 Arduino Voice Recorder for Robojax.com 
    while (Serial.available() > 0) {
          char inChar = (char)Serial.read();
            if(inChar =='p' || inChar =='P'){
            digitalWrite(PLAY_E, HIGH);
            delay(50);
            digitalWrite(PLAY_E, LOW);  
              Serial.println("Playbak Started");  
            delay(playTime);
            
              Serial.println("Playbak Ended");
            break; 
            }// if          
            else if(inChar =='r' || inChar =='R'){
              digitalWrite(REC, HIGH);
              Serial.println("Recording started");
              delay(recordTime);
              digitalWrite(REC, LOW);
              Serial.println("Recording Stopped ");              
            } 
            else if(inChar =='l' || inChar =='L'){
            digitalWrite(PLAY_L, HIGH); 
              Serial.println("Playbak L Started");  
            delay(playLTime);
            digitalWrite(PLAY_L, LOW);
              Serial.println("Playbak L Ended");            
            }             
    // ISD1820 Arduino Voice Recorder for Robojax.com         
      Serial.println("**** Serial Monitor Exited");      
    }// wihile
Serial.println("**** Enter r to record, p to play");

  delay(500);
}
   

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