What is the idea behind ISD1820 Voice Recording Module?
The idea behind the ISD1820 Voice Recording Module is to provide an economic solution for recording and playback of audio. The ISD1820 Voice Recording Module is designed to record and playback audio. It can be used to record messages, store music, or any other type of audio. The module has a built-in microphone and speaker and can be controlled using an Arduino or other microcontroller. For those who need an economic solution to record their voice message and then need to play it back, ISD1820 is the best solution. It is going to cost online only like $2.5 or 200 INR. Can buy it from here.
How does ISD1820 Voice Module work? :
This module is operated with 3.3V to 5V DC. It has an onboard 3.7V Li-ion battery. The module has two push buttons for recording and playback. It also has an LED to indicate the recording and playback mode.
The module has a built-in microphone and speaker. It can be controlled using an Arduino or other microcontroller. It also has an LED to indicate the recording and playback mode. When the module is powered on, the LED will blink once. Pressing the record button once will start recording. The LED will blink once every second to indicate that the recording is in progress. Pressing the record button again will stop recording. Pressing the play button will play the recorded audio. The LED will blink every second to indicate that playback is in progress. Pressing the play button again will stop playback. The module can store up to 60 seconds of audio. The audio is stored in non-volatile memory, so it will not be lost when the power is turned off. The module can be used to record messages, store music, or any other type of audio. It is an economic solution for recording and playback audio. The ISD1820 Voice Recording Module is a great way to record and playback audio. It is an economic solution for recording and playback audio. It also has an LED to indicate the recording and playback mode. When the module is powered on, the LED will blink once. Pressing the record button once will start recording.
Video Demonstration:
ISD1820 Voice recording Module Pinout:
VCC –> 3.3V to 5V
GND –> Ground
REC –> Record
PLAY –> Playback
LED –> LED indicator
IN1 –> Microphone
OUT1 –> Speaker
PLAYE – Playback, Edge‐activated
PLAYL – Playback, Level‐activated, when this input pin level transits for LOW to HIGH, a playback cycle is initiated.
Speaker Outputs – The SP+ and SP‐ pins provide a direct drive for loudspeakers with 8Ω.
MIC – Microphone Input
FT – Feed Through: By connecting the mini jumper, this mode enables the Microphone to drive the speaker directly. means it will convert the module into a live mic.
P‐E – By connecting the mini jumper, Play the records endlessly.
Specifications & Features ISD1820 Module:
Operating Voltage: 2.8-5.5V
Module Size: 3.2 x 1.9cm / 1.26 x 0.75″
Automatic power‐down mode On‐chip 8Ω speaker driver
Signal out – 3V
Can be controlled both manually or by MCU
Sample rate and duration are changeable by replacing a single resistor
Record up to 10 seconds of audio
Dimensions: 37 x 54 mm
High-quality Simple circuit
Pluggable Recording and
playback function
Push‐button interface, playback can be edge or level activate
Recording Guide for ISD1820:
1. Plug the USB cable into the ISD1820 Voice Recorder board and the other end into your Arduino Board.
2. Press and hold the “record” button and keep it hold till the recording ends. Now release the REC button.
3. While still holding the “record” button, press and hold the “play” button.
4. Release both buttons.
5. Playback mode:- PLAYE, just need to push one time, and will playback all of the records until the pre-record sound end
6. PLAYL, you need always push this button until you want to stop the playback record or end. this button we use for the sound loop.
7. When short P‐E jumper:- the record will playback repeatedly till the time jumper is in the position.
8. FT mode, when short FT jumper, that means all of you speak to MIC will direct playback and the module will act like a live microphone.
Applications of ISD1820 Module:
-Embedded System Projects
-In Automobile for Playback of special voice notes
– Audio Player
-Sound effects generator
-Musical instrument
-Robot voice
-Toy voice
-Navigation voice
-Interactive voice response (IVR) system
Want to Buy the Module:- Click here