Seeed Grove User manual
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Document Revision History
Revision
Date
Author
Description
1.0
Sep 21, 2015
Victor.He
Create file
3
Contents
Document Revision History···································································································2
1. Introduction ···················································································································2
2. Interface function···········································································································3
①LED Indicator······························································································································· 3
②Sampling resistor ························································································································ 4
③Playback resistor························································································································· 4
④Play Key······································································································································· 4
⑤REC Key ······································································································································· 4
⑥Grove Interface ··························································································································· 4
⑦Loudspeaker Interface ················································································································· 4
⑧REC IC：ISD1820P······················································································································· 4
3. Usage······························································································································5
4. Availability······················································································································6
5. Resources·······················································································································7
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Disclaimer
For physical injuries and possessions loss caused by those reasons which are not related to product quality,
such as operating without following manual guide, natural disasters or force majeure, we take no
responsibility for that.
Under the supervision of Seeed Technology Inc., this manual has been compiled and published which
covered the latest product description and specification. The content of this manual is subject to change
without notice.
Copyright
The design of this product (including software) and its accessories is under tutelage of laws. Any action to
violate relevant right of our product will be penalized through law. Please consciously observe relevant local
laws in the use of this product.
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1. Introduction
Grove - Recorder is based on the ISD1820P chip, and can record 8-20 secs of audio. It offers true single-chip
voice recording and provides non-volatile storage. The recording time can be varied by changing the
sampling resistor (R6) on the module's PCB. By default, the resistor on-board has a value of 100KΩ and thus
the module offers a default recording time of 10 secs. The audio recording can be directly controlled by the
on-board push button or by a micro-controller such as a Seeeduino.
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2. Interface function
①LED Indicator
Modes:
Record: Red LED light stays ON from the beginning of the recording duration until the end.
Playback: Red LED flashes to signal end of audio playback.
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②Sampling resistor
You can set the recording duration and sampling rate by change sampling resistor (R6) based on the
following table:
ROSC
Duration
Sampling Frequency
Input Bandwidth
80 KΩ
8 secs
8.0 KHz
3.4 KHz
100 KΩ (default)
10 secs
6.4 KHz
2.6 KHz
120 KΩ
12 secs
5.3 KHz
2.3 KHz
160 KΩ
16 secs
4.0 KHz
1.7 KHz
200 KΩ
20 secs
3.2 KHz
1.3 KHz
③Playback resistor
Modes:
Cycle: R8 is place 0Ω resistor
Single: R8 is not place resistor
④Play Key
Not used currently
⑤REC Key
⑥Grove Interface
⑦Loudspeaker Interface
⑧REC IC：ISD1820P
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3. Usage
Follow these steps to build a sample circuit using the Grove - Recorder module:
1. Connect the recorder module to the output side of the Grove circuit (to the right of the power
module). On the input side of the circuit, you may use a Grove - Button or a Grove - Slide
Potentiometer module.
2. Power up the circuit.
3. Press and hold down the REC button on the recorder module and start recording the audio. The
on-board red LED will turn ON. Continue to record the audio until the red LED gets turned OFF.
The LED getting turned OFF is indicative of the fact that the recording time is now over.
4. To play back the audio segment that has been recorded, press and hold down the Grove - Button.
You should now hear the audio segment you recorded being played back. Continue to press and
hold down the Grove - Button until you see the red LED on-board the recorder module flash. The
flash indicates that playback of audio is now complete. If instead of a Grove - Button, you are
using a Grove - Slide Potentiometer, simply move the slider from GND to VCC position to hear
the playback at any time.
5. To override the recorded audio, simply repeat step 3 above. The new message will override the
old one.
Below is an illustration of a Grove circuit built using the Grove - USB Power power module:
If you do not have the Grove - USB Power module, use the Grove - DC Jack Power module instead.
Other manuals for Grove
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