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Grove compatible interface Wide supply voltage range Built-in signal filtering
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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 envelope. This will make for Arduino's signal acquisition. The output value depends on the level of the sound input. In order to avoid unnecessary signal disturbances, the 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.
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
Part List
ECCN/HTS
A solar-powered open source kit for monitoring air quality, sound level, humidity, and temperature.
The work combines art and electronics. The art part makes the skeleton and consists of 11 layers of medium density fiberboard.
The maker says: Just the first time I saw children’s painting, had idea to create it in kind. Every stitch was completed by hand according painting. Especially, added some special functions that girl’s skirt could give out blue light and ...
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.
Review by sales
Posted on 10/24/17
Product Faqs
Does it come with a cable?
Yes, it comes with the cable
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?
Hi Bari,
Yes,the Loudness Sensor can work well under 3.3V power.
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.net
Please help me~T.T
Please try this software "Eagle" to open the schematics files.
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)
The Working Frequency is different,the working Frequency of loudness sensor only can up to 2K, but sound sensor can up to 16K.
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?
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
