Voice Recorder-ISD1820 SKU: SEN0197

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Voice Recorder-ISD1820


This is the latest ISD1820 voice recorder module with integrated record and play functions. Easily record your voice by pressing the record button, speaking and then releasing the button when finished. The module is able to playback 10 seconds in total. Connect an 8Ω 3W speaker or an external active speaker for voice output. The module also has a 3 pin digital interface so you can connect it to an Arduino compatible microcontroller as a playback trigger.


  • Operating voltage: 5V
  • Recording time: 10 seconds
  • Sampling frequency: 6.4KHz
  • Repeatable recording times: 100,000
  • Dimensions: 37*35 mm/ 1.46*1.38 inches

Board Overview

SEN0197 board.jpg
Name Features
SPK1 Speaker (Supports 8Ω@3W speaker)
SPK2 Active Speaker
PLAY Play Audio
REC Record (Release the button to stop recording)

Manual Control

  1. Press the record button to record; release the button to stop recording. The module supports 10s of recording and the red LED on the board will flash when the buffer is full.
  2. Press the play button to play the recording; At the end of playback, the red LED on the board will flash once.
  3. This module can control playback with an Arduino compatible microcontroller. See below for details.

Arduino Control


Connection Diagram

SEN0197 Voice Record connection.png

Sample Code

 1 int Play_pin = 2;
 2 void setup() {
 3   pinMode(Play_pin,OUTPUT);
 4   digitalWrite(Play_pin,LOW);
 5 }
 7 void loop() {
 8   digitalWrite(Play_pin,HIGH);
 9   delay(1000);
10 }


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SVG files

DFshopping car1.png Shopping from Gravity: Voice Recorder Module or DFRobot Distributor.
Category: DFRobot > Sensors & Modules > Sensors > Sound Sensors