ISD1820 Voice Recording Module with Loudspeaker – Overview
The ISD1820 voice recording module provides a compact, affordable way to add real-time audio to your projects. With a built-in electret microphone and an included 0.5W 8 ohm speaker, the module records, stores, and plays back voice messages up to 20 seconds long. Its plug and play design makes it ideal for hobbyists, educators, and embedded engineers in Islamabad and across Pakistan.
Key Features
- Built-in Microphone and Speaker – Record and play audio instantly with no extra components required.
- Plug and Play – Manual record and playback buttons for quick testing and demos.
- MCU Compatible – Use REC, PLAYE and PLAYL pins to interface with Arduino, Raspberry Pi, ESP32 and other controllers.
- Up to 20 Seconds Recording – Non-volatile storage retains recordings after power loss.
- Compact and Durable – Small 37mm x 54mm PCB fits into prototypes, toys, and embedded systems.
- Flexible Playback Modes – Edge-triggered (play once) or level-triggered (loop playback) operation.
Technical Specifications
- Model: ISD1820
- Power Supply: 3V to 5V DC
- Recording Time: Up to 20 seconds
- Microphone: Built-in electret mic
- Speaker Output: 0.5W, 8 ohm speaker included
- Control Options: Manual buttons or microcontroller controlled via pins
- Playback Modes: Edge-triggered or level-triggered
- Dimensions: Approx. 37mm x 54mm
Compatibility and Integration
The ISD1820 voice recording module integrates easily with common development boards. Typical connections and notes:
- Power: 3V to 5V DC to VCC and GND
- Microcontroller control: Connect PLAYE, PLAYL or REC pins to digital IO for automatic triggering
- Use simple transistors or driver circuits when connecting to higher-power amplifiers
- Software libraries and wiring guides for Arduino and Raspberry Pi are widely available online
How to Record and Play
- Power the module with 3V to 5V DC.
- Press and hold the REC button and speak near the microphone to record your message (up to 20 seconds).
- Release REC and press PLAY button for instant playback, or trigger via MCU pins for automated playback.
Popular Use Cases
- Voice-activated smart devices and home automation feedback
- Interactive toys and talking plush projects
- Educational STEM kits and classroom demonstrations
- Security systems that broadcast alerts or warnings
- Greeting cards, exhibition displays, and promotional installations
Frequently Asked Questions
- Can I use ISD1820 with Arduino? Yes. Connect the module pins to your Arduino and use available tutorials or libraries for control.
- How long does it record? The module supports up to 20 seconds of recorded voice stored in non-volatile memory.
- Does it include a speaker? Yes. This version includes a matched 0.5W 8 ohm loudspeaker for immediate playback.
- Can I record multiple messages? It stores a single message at a time. You can re-record as often as needed.
- Can I control it with a microcontroller? Yes. PLAYE, PLAYL, and REC pins allow MCU interfacing for automatic triggering and integration.
Why Choose the ISD1820 for Your Project
The ISD1820 voice recording module adds a human touch to electronics without complicated coding or extra hardware. It is perfect for makers in Islamabad, Pakistan and worldwide who want immediate audio feedback in their projects. Its small size, reliable storage, and easy MCU control make it a top choice for prototypes and educational kits.
Buy from Colgroad
Order the ISD1820 voice recording module with loudspeaker from Colgroad for quality-verified components and fast shipping across Islamabad and Pakistan. Your projects deserve to be heard.
Note: Images are for illustration purposes only.
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