🔍 Product Overview

The ISD1820 module is a fully integrated voice recorder and playback board designed for hobbyists, makers, and embedded projects. It provides a ready-to-use solution for recording short custom audio messages (typically 8-20 seconds), storing them in non-volatile memory, and playing them back via a built-in speaker driver or external amplifier.

---

🚀 Why It’s Ideal for Your Projects

• Instant voice interaction — With just a push button (or via microcontroller control), you can record custom audio messages and play them back on demand, adding voice prompts, alerts, or storytelling to your build.

• Microcontroller friendly — Easily triggered by digital pins from boards like Arduino, ESP32 or Raspberry Pi. No complex sound-card or driver needed — you get voice recording and playback with minimal wiring and code.

• Compact and strong memory retention — The recorded message persists even when power is removed, making it great for products, installations or devices that need “voice memory” built-in.

---

📝 Key Features

• Operating voltage: typically around 3V to 5V (allowing use with standard logic and battery systems).

• Recording duration: around 8 to 20 seconds, depending on sampling rate/resistor configuration.

• Built-in microphone for direct audio capture, plus onboard speaker driver capable of driving an 8 Ω, 0.5-1 W speaker.

• Non-volatile storage: audio remains stored even when power is off.

• Push-button interface for quick manual recording/playback, and header pins for microcontroller-controlled recording/playback.

• Multiple play modes: full playback, loop playback, or feed-through “live mic to speaker” mode.

• Small board footprint, suitable for adding voice features to robots, interactive installations, toys, alarms, access systems and more.

---

🎯 Typical Applications

• Interactive toys or robotics — Add voice responses, prompts or sound effects to your robots or gadgets.

• Audio alerts or announcements — Build doorbell messages, machine alerts, or user notifications that play custom voice cues.

• DIY access control or informational kiosks — Record a warning or greeting message and play it back when a condition is met.

• Educational projects and prototyping — Great for learning how to integrate voice modules with microcontrollers or for building sound-enabled electronics.

---

✅ Why You’ll Love It

The ISD1820 module gives you a powerful yet easy-to-use voice recording/playback capability that you can drop into almost any project. Whether you’re building a talking robot, creating a custom alert system, or simply experimenting with voice features, this module offers flexibility, reliability and simplicity—all powered by simple logic and low voltage.