Product details
The ISD1820 module is a compact voice recording and playback board commonly used in Arduino, ESP32, robotics, and automation projects. It works on 3V–5V, includes an onboard microphone, and supports direct speaker output (8Ω 0.5W). Most modules can record around 10 seconds of audio and retain the recording even after power loss.
Specifications
- Operating voltage: 3V–5V DC
- Onboard electret microphone
- Supports 8Ω / 0.5W speaker
- Push-button recording and playback
- Edge-trigger and loop playback modes
- Non-volatile voice storage
- MCU compatible (Arduino, ESP32, STM32)
- Module Dimensions: 42x11x38mm
- Module Weight: 18g
Pin Details
- VCC → 3V–5V power
- GND → Ground
- REC → Start recording
- PLAY → Play once
- PLAYL → Play while pressed
- SP+ / SP− → Speaker output
- FT → Live microphone feed-through mode
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