ISDI820 Voice Recording Module with Microphone and Loudspeaker

Wiring Connections

• VCC:

• • Purpose: Connects to the power supply.
  • Connection: Connect to 5V power source.

• GND:

• • Purpose: Ground connection.
  • Connection: Connect to the ground of your power source.

• REC (Record Pin):

• • Purpose: Starts the recording process.
  • Connection: Connect to a digital output pin of a microcontroller.

• PLAY (Playback Pin):

• • Purpose: Starts the playback of recorded audio.
  • Connection: Connect to a digital output pin of a microcontroller.

• STOP (Stop Pin):

• • Purpose: Stops recording or playback.
  • Connection: Connect to a digital output pin of a microcontroller.

• P/W (Power/Work Pin):

• • Purpose: Indicates the module’s operational status.
  • Connection: Can be connected to a status LED or ignored if not needed.

Power

• Input Voltage:
  • Recommended: 5V DC
  • Tolerance: Typically, 4.5V to 5.5V DC is acceptable.
• Current Consumption:
  • Recording: Approximately 40mA
  • Playback: Approximately 60mA

Input and Output

• Input:

• • Microphone: Captures audio for recording.
  • Control Pins: Used to start, stop, and play audio.

• Output:

• • Loudspeaker: Provides audio playback.
  • Control Pins: Provide status and control signals.

Physical Characteristics

• Dimensions: Approximately 40mm x 30mm
• Shape: Rectangular
• Mounting: Can be mounted using screws or adhesive.
• Weight: Lightweight, making it easy to integrate into various projects.

Technical Specifications

• Audio Encoding: 8-bit PCM
• Playback Duration: Up to 10 seconds of audio storage.
• Microphone Type: Electret condenser microphone
• Loudspeaker: Integrated, typically 0.5W to 1W power handling
• Temperature Range: Typically -20°C to 70°C

Additional Features

• No Additional Components Required: Comes with built-in microphone and loudspeaker.
• Compatible with Common Microcontrollers: Can be used with Arduino, ESP32, and other popular boards.
• Low Power Consumption: Efficient use of power, suitable for battery-operated devices.

How to Use

• Power the Module:

• • Connect the VCC pin to a 5V power source.
  • Connect the GND pin to the ground of the power source.

• Connect Control Pins:

• • Connect the REC pin to a digital output pin on your microcontroller to start recording.
  • Connect the PLAY pin to a digital output pin on your microcontroller to start playback.
  • Connect the STOP pin to a digital output pin to stop recording or playback if needed.

• Record Audio:

• • Set the REC pin high to start recording.
  • The module will automatically save the audio to its memory once recording is complete.

• Playback Audio:

• • Set the PLAY pin high to begin playback of the recorded audio.
  • The internal loudspeaker will output the recorded sound.

• Stopping Actions:

• • Set the STOP pin high to halt recording or playback if required.

The ISDI820 Voice Recording Module with Microphone and Loudspeaker is a versatile and compact solution for adding voice recording and playback capabilities to your projects. Its easy integration with microcontrollers and built-in components make it a practical choice for various applications, from simple DIY projects to more complex electronic designs.