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Detailed Description:

The ISD1820 Sound Voice Recording Playback Module is a remarkably simple yet powerful solution for adding audio capabilities to your electronics projects. Designed to record and play back a single voice message, this module is a favorite among hobbyists and students for its ease of use and affordability. It comes fully equipped with a built-in microphone for direct audio input and an onboard speaker driver that can directly power an included 8Ω, 0.5W speaker, eliminating the need for additional amplifiers in basic setups.

The core of the module is the ISD1820 chip, which provides true single-chip voice recording and non-volatile storage. This means your recorded message is saved in its analog flash memory and will be retained even when the power is turned off, a crucial feature for projects that require persistent data. The standard module offers a recording duration of up to 10 seconds, which can be controlled manually using the onboard push buttons or through a microcontroller like the Arduino or Raspberry Pi. Its control pins—REC, PLAYE, and PLAYL—allow for versatile operation, including single-pass playback and continuous loop playback. With a wide operating voltage range of 3V to 5V, the ISD1820 module is perfectly suited for a variety of applications, from creating custom greeting cards and talking toys to providing voice prompts for security systems and educational tools.

The Voice Playback Module allows you to record and playback audio messages with a button press. Depending on the version (ISD1820, APR33A3, etc.), it offers record durations from 10s to 30s or more, and comes with a built-in microphone and speaker (or speaker header).

It supports push-button control for playback and recording or can be triggered by digital IO pins from microcontrollers such as Arduino, ESP32, STM32, etc. Ideal for audio-based alerts, greetings, toys, motion-triggered systems, and speech-enabled devices.

Key Features:

• Built-in microphone and voice recording circuit

• Playbacks up to 10–30 seconds of voice/audio

• Push-button interface for Record, Play, and Repeat

• Can be triggered via Arduino/Raspberry Pi GPIO

• Onboard or external 8Ω speaker support

• Supports loop or edge-triggered playback modes

• Compact size and low power consumption

• Ideal for DIY projects, toys, and security systems

Technical Specifications (ISD1820 variant):

How to Use:

1. Power module via 5V DC (VCC and GND)

2. Press REC to record audio via onboard mic

3. Use PLAYE or PLAYL to playback message

4. Connect Arduino GPIO to trigger playback automatically

5. Use jumper settings for repeat/edge modes

Arduino Trigger Example:

Applications:

• Voice-enabled greeting cards

• Talking toys and action figures

• Motion-triggered audio messages

• DIY burglar alarm with voice alerts

• Voice-guided systems or instructions

• Automated public announcement systems

• Customer assistance and info kiosks

Package Includes:

• 1 x Voice Playback Module (ISD1820 / compatible)