This high sensitivity single microphone module features MSM261S4030H0 digital silicon chip, I2S output, onboard SK9822 series RGB LED, two-wire control color.

MSM26S4030H0 is an omnidirectional, bottom ported, I2S digital output MEMS microphone chip. I2S is a general-purpose digital audio interface and is widely used in DSP and digital audio processing fields. In a conventional audio system, the audio signal collected by the microphone will be converted into analog voltage and output, and then processed by the main controller chip after being changed into a digital signal and encoded through the ADC of codec. However, the product of the MSM261S4030H0 series has a built-in 24bit I2S audio port, so without adding an extra Codec, it is able to realize full digital signal connections with DSP or MCU. The raw digital audio signal is directly output to the main controller chip. As a result, the complexity of designing signal chains will be greatly reduced, which allows the product to hold advantages in size, cost, power consumption, and anti-interference.

Nowadays, personal portable electronic products have been gradually becoming dominant in the consumer market. This kind of silicon-made microphone learns the advantages of semiconductor technology and combines high repeatability of production, excellent sound performance, and great expansibility. Therefore, it can be said with confidence that in the near future, the traditional ECM(electret condenser microphone) will be replaced by low-cost and high-performance MEMS.

Package includes:

1 x I2S Microphone Module

The Sound Detector is a small and very easy to use audio sensing board with three different outputs. The Sound Detector not only provides an audio output, but also a binary indication of the presence of sound, and an analogue representation of its amplitude. The 3 outputs are simultaneous and independent, so you can use as many or as few as you want at once.

The envelope output allows you to easily read the amplitude of sound by simply measuring the analogue voltage. Gain can be adjusted with a through-hole resistor, to change the threshold of the binary (gate) output pin as well. Check the hookup guide below for more information about setting gain.

Each of the three output signals is present on the .1″ header at the edge of the board. They are active simultaneously. If you aren’t using one in your particular application, simply leave that pin disconnected.

Features: 

Specification:

1. Sensor Type:
   • Sound
2. Typical Input Voltage:
   • 3.3VDC
   • 5VDC
3. Operating Current:
            100uA
4. Interface:
   • Analog
5. Communication Protocol:
   • Without

Package Includes:

1 x SparkFun Sound Detector

A sound sensor is defined as a module that detects sound waves through their intensity and converts it to electrical signals.

The sound detection sensor module for Arduino detects whether the sound has exceeded a threshold value. Sound is detected via microphone and fed into an LM393 op-amp. The sound level set point is adjusted via an onboard potentiometer. When the sound level exceeds the set point, an LED on the module is illuminated and the output is sent low.

Specifications: 

1. Operating voltage 3.3V-5V
2. Outputs digital switching output (high and low levels 0 and 1
3. Operating current (Vcc=5V): 4-8mA
4. Microphone sensitivity (1Khz): 52-48dB
5. Microphone Impedance: 2.2KΩ
6. Microphone Frequency: 16-20Khz
7. Microphone S/N ratio: 54dB
8. Signal output indication
9. Single channel signal output
10. Outputs low level and the signal light when there is sound

Packages Includes: 

1 x Sound Detection Sensor Module

INMP441 MEMS High Precision Omnidirectional Microphone Module I2S

The INMP441 is a high-performance, low-power, digital output, omnidirectional MEMS microphone with a bottom port. The complete INMP441 solution consists of a MEMS sensor, signal conditioning, analog to digital converter, anti-aliasing filter, power management, and industry-standard 24-bit I2S interface.

The I2S interface allows the INMP441 to be directly connected to digital processors such as DSPs and microcontrollers without the need for an audio codec for use in the system. The INMP441 has a high signal-to-noise ratio and is an excellent choice for near-field applications. The INMP441 has a flat wideband frequency response that results in a high definition of natural sound.

Features and Specifications:

LM386 is an audio power amplifier with features of low power consumption, adjustable voltage gain, wide voltage power supply, fewer requirements on peripheral components, and minimum total harmonic distortion. LM386 can be applied to consumer products with low voltage requirements. To minimize the number of peripheral components used, the voltage gain should be set to 20.

In the case of working with an MCU:

VCC ↔ 3.3V ~ 5.3V

GND ↔ power supply ground

AOUT ↔ MCU.IO (analog output)

DOUT ↔ MCU.IO (digital output)

Applications:

1. Audio amplifier
2. Ambient sound detection
3. Sound level detection

Features:

1. Onboard audio power amplifier LM386
2. Audio signal gain up to 200
3. Adjustable accuracy
4. Signal output indicator

Package Includes:

1 x Sound Sensor

1 x 4-pin custom connector jumper wire

DFrobot offers an advanced level of sensors at an affordable cost than any other competitor brand in the market, making them ideal for the one who wants to start some Projects through Different types of sensors.

After finding Different types of sensors on market, we at robu.in have determined that DFrobot is one of the good brands that offer a wide range of sensors at an Appropriate price.

This is an Arduino compatible sound level meter(also known as a decibel meter, noise meter). It uses an instrument circuit and low noise microphone, which enable it to accurately measure the sound level of the surrounding environment. It can be applied to environmental noise testing, such as highway noise monitoring stations, bedroom noise monitoring, etc.

Nowadays, there are many kinds of sounds surrounding, some of which are really noisy. It is really essential to measure whether the sound is noisy enough to do damage to our health.

The sound level meter (also known as the decibel meter, noise meter) is a basic noise measurement instrument. We have launched a sound level meter, which is compatible with Arduino, plug-and-play. It can accurately measure the sound level of the surrounding environment. This product uses an instrument circuit, low noise microphone, which makes it highly precise. It supports 3.3~5.0V wide input voltage, 0.6~2.6V voltage output. The decibel value is linear with the output voltage, which leads to a simple conversion, without a complex algorithm. The connector is plug-and-play, without welding, so this product can be easily used in your application.

Interfacing Analog Sound Level Meter with Arduino:

Attention:

Attention:

The black film on the microphone is a sensitive component, do not touch it with fingernails or other sharp objects. Do not place this module on the surface of the conductor or the semiconductor, otherwise, it will shorten the microphone’s pins. It is recommended to place this module on a dry insulator’s surface or fix it with nylon columns to hang in the air.

Features:

1. High Precision: use instrument circuit, low noise microphone
2. Wide Voltage Input：3.3~5.0V
3. Simple Conversion: linear analog output, 0.6~2.6V linear correspondence 30~130dBA, no complex algorithm is required
4. Easy to Use: plug and play, without soldering

Useful Links:

Please visit the DFrobot wiki page for more information about this product. Any suggestions for improvement, such as correcting errors, adding more demo codes or tutorials, will be highly appreciated.

Specifications:

1. Measuring Range: 30dBA ~ 130dBA
2. Measurement Error: ±1.5dB
3. Frequency Weighted: A Weighted
4. Frequency Response: 31.5Hz ~ 8.5KHz
5. Time Characteristics: 125ms
6. Input Voltage: 3.3 ~ 5.0V
7. Input Current: 22mA@3.3V, 14mA@5.0V
8. Output Voltage: 0.6 ~ 2.6V
9. Module Size: 60mm * 43mm

Package Includes:

1 x Analog Sound Level Meter

1 x Gravity Analog Cable 3Pin