Difference between revisions of "Sensor-MIC"

Microduino-Sound

The product number of Sensor-MIC is: MSDT11

Sensor-MIC is sound detection sensor module.

Electret microphone is composed of sound electric conversion and impedance conversion. The key component of sound electric conversion is electret diaphragm, which is a slice of thin plastic film of which one side is steamed with a layer of metal film, and after the electret by high voltage field, the two sides respectively has opposite charges, the steamed gold face of the diaphragm is outward, and is connected with the metal case. In the electret microphone, there is a field effect tube to do pre amplifier, so a certain blas voltage is needed when the electret microphone is working normally, which is generally not greater than 10v.

Instruction of Sensor Pin

Pins of the sensor: PIN1: GND PIN2: VCC General signal pins: PIN3(IO1): digital/analog signal PIN4(IO2): NC(null) Special signal pins: If it is IIC: IO1/IO2 are respectively SDA/SCL. If it is soft serial port: IO1/IO2 are respectively tx/rx.

Special to Sensor-MIC sensor pins PIN1: GND PIN2: VCC PIN3(IO1): Analog signal input PIN4(IO2): NC Microduino sensor can communicate with core module through the connection with Microduino-Module Sensor Hub.

Features

• Capacitive sound detection component
• Low power and high sensitivity
• With small size which is easy to install

Specification

• Voltage
  • Working voltage: 3.3V~5V

• Size
  • Size of the board: 23.5mm*13mm
  • 1.27mm-spacing 4Pin inerface connected to sensorhub
  • The CAD drawing of the sensor: File:Sensor CAD.zip

• Technical parameters
  • Measuring voltage: 0～5V（measuring frequency range 100Hz～4000Hz）
  • Measuring sound intensity: 45～120dB
  • Accuracy: ±1%

• Connection
  • This sensor can be connected to the following interfaces of core: A0~A7

Document

• Schematic diagram: File:Sensor-MIC.Zip
• Main chip: File:52DB datasheet.pdf

Development

Program Download

• Download and unzip the program File:Sensor-MIC Test.zip

Programming

• Follow the Software Getting Started Guide.
• Select the Board, Processor and Port.
• Click [File]->[Open], browse to the project program address, and click "Sensor-MIC Test.ino" to open the program.
• After confirming all these items are correct, click "→" to download the program to the development board.

Hardware Setup

• Referring to the following diagram, connect the Sensor-MIC to the analog interface A0/A1 of Microduino-Sensorhub

Result

• After download, open the serial monitor.
• The value displayed in the serial monitor reflects the current sound intensity detected by the MIC sensor.

Application

It can be used to collect sound or detect the sound shaking.

Project

• Sensor-MIC

Purchase

History

Gallery

• Front

• Back