Grove - Loudness Sensor
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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.
Technical details
| Dimensions | 24mm x20mm x9.8mm |
| Weight | G.W 9g |
| Battery | Exclude |
| Voltage | 3.5~10 VDC |
| Working Frequency | 50~2000 Hz |
| Sensitivity | -48~66 dB |
| Signal-to-noise Ratio | >58 dB |
| Output Signal range | Analog Signal (0-1023) |
Part List
| Grove - Loudness Sensor | 1 |
ECCN/HTS
| ECCN | EAR99 |
| HSCODE | 9031900090 |
| USHSCODE | 8531800050 |
| UPC | 841454108023 |
| ROHS | 1 |
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Grove - Loudness Sensor
The Grove - Loudness Sensor is designed to detect the sound of environment. Based on LM2904 amplifier and a built-in microphone, it amplifies and filters the high frequency signal that received from the microphone, and outputs a positive envelop.
Product Faqs
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Question by: admin on 2018-12-18 02:34:27
Yes, it comes with the cable
Answer by: admin on 2018-12-18 02:34:27 -
Question by: admin on 2018-12-18 02:34:27
Hi Bari,
Yes,the Loudness Sensor can work well under 3.3V power.
Answer by: admin on 2018-12-18 02:34:27 -
Question by: admin on 2018-12-18 02:34:27
Please try this software "Eagle" to open the schematics files.
Answer by: admin on 2018-12-18 02:34:27 -
Question by: admin on 2018-12-18 02:34:27
The Working Frequency is different,the working Frequency of loudness sensor only can up to 2K, but sound sensor can up to 16K.
Answer by: admin on 2018-12-18 02:34:27 -
Question by: admin on 2018-12-18 02:23:18
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?
Answer by: admin on 2018-12-18 02:23:18 -
Question by: admin on 2018-12-18 02:21:06
Thank you for your fast response. I notice that LMV358 is an 8-pin device and that the picture above shows this component missing in the finished device. Do you know whether this is needed and if so why there are only 4 pads? Thanks
Answer by: admin on 2018-12-18 02:21:06