Grove - Sound Sensor
Introduction
Grove - Sound Sensor can detect the sound strength of the environment. The main
component of the module is a simple microphone, which is based on the LM358
amplifier and an electret microphone. This module’s output is analog and can be
easily sampled and tested by a Seeeduino.
Features
• Easy to use
• Provides analog output signal
• Easily integrates with Logic modules on the input side of Grove circuits
• Grove System
Warning
This sound sensor is to detect if there’s sound surround or not, please don’t use the
module to collect sound signal. Such as you can use it to make a sound control lamp,
but not as a recording device.
Specifications
Item
Value
Operating Voltage Range
3.3/5 V
Operating Current(Vcc=5V)
4~5 mA
Voltage Gain(V=6V, f=1kHz)
26 dB
Microphone sensitivity(1kHz)
52-48 dB
Microphone Impedance
2.2k Ohm
Microphone Frequency
16-20 kHz
Microphone S/N Radio
54 dB
Arduino
Wio
BeagleBone
Raspberry Pi
LinkIt
Tip
More details about Grove modules please refer to Grove System
Platform Support
Getting Started
Note
This chapter is based on Win10 and Arduino IDE 1.6.9
This an easy-to-use module, what you need to do is connect the signal pin (the
YELLOW pin of Grove cable) to the ADC input of your controller. If there’s no internal
ADC in your controller, Grove - I2C ADC is recommend.
Here we will show you how this Grove - Sound Sensor works via a simple demo. First
of all, you need to prepare the below stuffs:
Seeeduino V4
Grove - Sound Sensor
Base Shield
Connection
Thanks to the benefit of Grove series modules, you don’t need to make soldering or
bread board, what you need to do is connect the modules to the right port of Base
Shield. For this demo, we have only one Grove module.
• Grove - So un d S e nsor is an analog ou tput module, we connect it to A0 at this demo
Upload the code to Arduino
Copy the below code to Arduino IDE.
// test code for Grove - Sound Sensor
// loovee @ 2016-8-30
const int pinAdc = A0;
void setup()
{
Serial.begin(115200);
//Serial.println("Grove - Sound Sensor Test...");
}
void loop()
{
long sum = 0;
for(int i=0; i<32; i++)
{
sum += analogRead(pinAdc);
}
sum >>= 5;
Serial.println(sum);
delay(10);
}
Then choose the right Board and COM port, and then click on the Upload button, this
process take few seconds.
Get Raw Data
Here let’s click on Serial > Plotter to get the changing curve of the sensor. Please
make a noise to view the change of the value.
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