Grove - Loudness Sensor

Grove - Loudness Sensor

SKU 101020063
$5.90
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Description

The Grove - Loudness Sensor is designed to detect the loudness of environmental sound. Based on amplifier LM2904 and a built-in microphone, it amplifies and filters the high frequency signal that received from the microphone, and outputs a positive envelop. This will make for Arduino's signal acquisition. The output value depends on the level of sound input. In order to avoid unnecessary signal disturbances, input signal will go through two times  filtering inside the module. Lastly, there is a screw potentiometer that enables manual adjustments to the output gain.

 

Features

  • Grove compatible interface

  • Wide supply voltage range

  • Built-in signal filtering

  • Gain adjustable via screw potentiometer


For all Grove users (especially beginners), we provide you guidance PDF documents. Please download and read through Preface - Getting Started and Introduction to Grove before your using of the product.

 

Documents

Please visit our wiki page for more info about this product. It will be appreciated if you can help us improve the documents, add more demo code or tutorials. For technical support, please post your questions to ourforum.

Technical Details

Dimensions24mm x 20mm x 9.8mm
WeightG.W 7g    
BatteryExclude
Voltage3.5~10 VDC
Working Frequency50~2000 Hz
Sensitivity-48~66 dB
Signal-to-noise Ratio>58 dB
Output Signal rangeAnalog Signal (0-1023)

Part List

Grove - Loudness Sensor1

Documents

Questions and Answers

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Hello, how do I interpret the values read from the board? For example, I seem to get values ranging from 130 to 160 in an ordinary environment. When I blow, I get values of 400/500. When I clap, the value goes down to 60/50. Can you help with this?<br/><br/>
on Dec 13,2016
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Hello, The time last of a clap is short, your mcu or sensor may not catch this sound. Please try to reduce the checking time in the code and keep clapping see if any better.Thanks.Loovee
on Dec 15,2016 10:16 AM
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Thanks for your prompt response. I know it is a stupid question to ask - but, is there a correlation between the voltage level on the SIG pin to the "db" level of the input?
on Dec 16,2016 00:04 AM
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Does it come with a cable?
on Oct 19,2016
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Yes, it comes with the cable
on Oct 20,2016 10:49 AM
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is it possible to use it with 3.3V power? I am using a MSP430 micro controller that operates on 3.3 V. If not, is there another board that works with 3.3 V?
on Oct 19,2016
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Hi Bari,Yes,the Loudness Sensor can work well under 3.3V power.
on Oct 20,2016 10:49 AM
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I bought this sensor.And I could not know the principle of this sensor.PLEASE SEND ME THE CIRCUIT OF THIS SENSOR.AND PLEASE WRITE THE CAPACITANCE AND RESISTANCE.rud920@hanmail.netPlease help me~T.T
on Oct 19,2016
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Hi, you can download the eagle circuits here: <a href="http://www.seeedstudio.com/wiki/Grove_-_Loudness_Sensor#Resource" rel="nofollow">http://www.seeedstudio.com/wik...
on Oct 20,2016 10:48 AM
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I could not open the file ".brd".how can i open '.brd' file? i tried to open that file through 'Allegro Free Physical Viewer 15.7"but, i could not open with this message " The database is corrupted. It may have been copied from a different
on Oct 20,2016 10:48 AM
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Please try this software "Eagle" to open the schematics files.
on Oct 20,2016 10:48 AM
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0
What is the difference between the Grove loudness sensor and the grove sound sensor?Which would be better at detecting loud low sounds? (e.g. neighbor's truck)
on Oct 19,2016
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The Working Frequency is different,the working Frequency of loudness sensor only can up to 2K, but sound sensor can up to 16K.
on Oct 20,2016 10:47 AM
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    Grove - Loudness Sensor

    SKU 101020063
    $5.90
    OUT OF STOCK
    This item is not available at the moment
    Get notified when it's back in stock
    $5.90/1pcs+
    $5.31/10pcs+
    $5.02/20pcs+
    $4.72/50pcs+
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