The ISD1820 Module is a compact electronic board used to record and play back short audio clips. It works as a standalone device or connects to microcontrollers.Key Specifications

• Voltage: DC 3V to 5V.
• Recording Time: 10 seconds default.
• Memory: Flash storage retains audio without power.
• Audio Output: Powers an 8-Ohm, 0.5W speaker.

Board Controls

• REC Button: Press and hold to record audio.
• PLAYE Button: Press once to play the whole recording.
• PLAYL Button: Plays audio only while held down.
• RPL Jumper: Loops the recorded message continuously.
• FT Jumper: Routes microphone input directly to the speaker.

Microcontroller Pins

• VCC / GND: Power input lines.
• REC Pin: High signal triggers remote recording.
• PLAYE / PLAYL Pins: High signals trigger remote playback.