Sensor-MIC

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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 Microphone Sensor General Pin Out Sensor / Trinket's Pin Out PIN1 (GND) GND PIN2 (VCC) VCC PIN3 (SIGNAL-A) Analog Input PIN4 (SIGNAL-B) Not Connected General Pin Out is the standard pin out of a Sensor / Trinket connector. Sensor / Trinket's Pin Out is this specific Sensor / Trinket's wiring in relation to the General Pin Out. SIGNAL-A / SIGNAL-B are signals that could be digital input, digital output, analog input or analog output. Or special signals such as serial communication (SoftwareSerial, IIC (I2C), etc) or other special signals. Not Connected refers to the Pin not being used for this particular Sensor / Trinket. Read more about the hub module. 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 interface 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 Usage Basic Functionality The Mic Sensor is an analog input sensor. It is able to detect noise levels based on air vibrations. A Core module can read the voltage value. Mic Sensor State Table Noise Level Value Produced Absolute Silence 0 Ambient Background Noise <40 Snapping Fingers / Talking 75~200 Amps that are "Up to eleven" 1023 Programming Arduino for MicroduinoArduino for Microduino Introduction The Mic Sensor is used as an analog input pin. Therefore, the pinMode and analogRead functions will be used. Key Functions Required Libraries: None Key Functions: pinMode(pin_number, pin_mode) - sets the mode for the pin pin_number - is the pin number that the sensor is connected to pin_mode - is the mode to set the pin to. Either INPUT or OUTPUT analogRead(pin_number) - Reads the value of the pin, between 0 and 1023 pin_number - is the pin number that the sensor is connected to Example This is a simple example which outputs the value of the Mic Sensor to the serial port terminal. Note: Important lines of code are highlighted. //Define the pin the sensor is connected to //Note: This sensor uses analog read, which means only pins denoted with an 'A' prefix will work. const int MIC_SENSOR_PIN = A0; void setup(){ // put your setup code here, to run once: //Initial serial communication port at 9600 baud Serial.begin(9600); //Configure the pin into input mode pinMode(MIC_SENSOR_PIN, INPUT); } void loop(){ // put your main code here, to run repeatedly: //Perform a digital read and store the value into pin_state variable int pin_value = analogRead(MIC_SENSOR_PIN); //Print out the current value of the sensor Serial.println(pin_value); //delay 10ms between loops delay(10); } Copy and paste the code above to the Arduino IDE or Download the above example: n/a Open the Serial Monitor (magnifier glass on top right) and set 9600 baud. This will display the serial output. 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 File:Microduino-Sound-F1.JPG Sensor-Sound Front Back File:Microduino-Sound -b1.JPG Sensor-Sound Back