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Grove - Recorder v2.0

Grove - Recorder v2.0 is a upgraded recorder with enriched features. It can record 8-20 seconds[1]audio with high-quality and natural voice. In addition, it also gets sound volume control and playback functions. With MCU such as Seeeduino or Arduino board, you can prototype various applications quickly with user-friendly interfaces.

[1]Recording time could be customized(if you require) by replacing different resistor the solution to do this will be described in later sections.

Version Tracker

Product revisionRelease dateSupport statusNotes
V1.0Apr 2014Supported-
V2.0Oct 2015Mainstream support
  1. Add speaker volume controller.
  2. Add NS8002 amplifier to enhance power.
  3. Add Rec pin Switch for switch Rec pin.


  • Easy-to-use with sound volume control, record, playback functions and grove interfaces.
  • Easy to be programmed for plenty of applications with MCU.
  • Automatic power down mode, variable recording and playback duration, non-volatile storage.
  • Low power consumption.
  • Shipped with a speaker (8Ω/2W).

More details about Grove modules please refer to Grove System

Application ideas

  • Toys.
  • Alarm.
  • Short-duration-echo required applications.


Operating voltage3.3~5.0V(DC)
Ripple(at Max power)≤ 50mV
Recording duration(default)12 seconds(MAX value)[2].
Playback duration(default)12 seconds(MAX value).
Sample rate53 kHz
ChipISD1820PY(Datasheet), NS8002(Volume Amplifier)

Platforms Supported

ArduinoRaspberry Pi

The platforms mentioned above as supported is/are an indication of the module's software or theoritical compatibility. We only provide software library or code examples for Arduino platform in most cases. It is not possible to provide software library / demo code for all possible MCU platforms. Hence, users have to write their own software library.

[2]You can replace the resistor shows as following to change recording duration.

Red rectangle marked area


Playback duration will be same with Recording duration as it changes. Different kinds of resistor will lead different Recording duration as the following table shows.

ROSCDurationSampling FrequencyInput Bandwidth
80 KΩ8 secs8.0 KHz3.4 KHz
100 KΩ (default)10 secs6.4 KHz2.6 KHz
120 KΩ12 secs5.3 KHz2.3 KHz
160 KΩ16 secs4.0 KHz1.7 KHz
200 KΩ20 secs3.2 KHz1.3 KHz

Hardware Overview

Grove interface

Connect main control board such as Seeeduino_v4.2 board with Grove - Recorder.

Speaker interface

Connect Grove - Recorder with speaker.

Rec shaft

Start recording.

Volume control interface

Control volume for speaker.


Microphone for recording.

IDS 1820PY


Running indicator

Light on while you are recording. Light out as you stop recording or recording time exceeds record duration.

Rec pin Switch

You can switch Rec pin ON/OFF, so you can disable or enable MCU controlled recording.

Grove wire

Connect main control board with driver board.


Parts list

Parts nameQuantity
Grove - Recorder v2.01 PC
Grove wire1 PC
Speaker1 PC

Get started

Materials required

  • Seeeduino_v4.2 x 1
  • Grove - Button x 1
  • Grove wire x 1


Refer to the following guides to build a appropriate IDE:

We have used Seeeduino in this case.
  • Getting Started on Windows

  • Getting Started on Mac OS X

Hardware connections

  • Connect all modules as above figure shows.
    • Grove - Button > D2
    • Grove - Recorder > D7

Software Work

Test code as below, copy to your Arduino IDE, then click Upload(CTRL+U) to upload code to your Arduino.

// demo for Grove - Recorder
const int pinButton = 2;
const int pinRec = 7;
void setup()
pinMode(pinButton, INPUT);
pinMode(pinRec, OUTPUT);
void loop()
if(digitalRead(pinButton)) // button pressed
digitalWrite(pinRec, HIGH);
digitalWrite(pinRec, LOW);
while(digitalRead(pinButton)); // until button release

Test it

  • After connection works and software works finished, press shaft Rec to start recording.
  • Then press button on Grove - Button to playback.
  • You can also adjust volume with Philip screw driver.

Schematic Online Viewer


  • Schematic file in Eagle format
  • Schematic file in PDF format

Tech Support & Product Discussion

Thank you for choosing our products! We are here to provide you with different support to ensure that your experience with our products is as smooth as possible. We offer several communication channels to cater to different preferences and needs.

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