Sound Detection Sensor

Outline Sound detection sensor can detect sound intensity but cannot recognize the specified sound. Inside the sensor, there is sound sensitive electret-condenser microphone. Acoustic wave triggers vibration of the thin electret film and causes capacitance change, generating subtle voltage. The voltage is converted to 0-5v, which can be recognized and received by mCookie-CoreUSB. Specification Electrical specification Operation voltage: 3V~5V Input Device Tech parameters Voltage: 0～5V（100Hz～4000Hz） Sound intensity: 45～120dB Accuracy:±1% Size Size of the sensor: 5mm*5mm Size of the board: 20mm*20mm 1.27mm-pith 4PIN interface; Connection method Output: 0~5V analog signal Pin Description: GND, VCC, signal output and NC(Empty). The output signal is simulated, thus, it needs analog interface to detect(A0-A7). You can connect it to A6,A2,A0 of the Hub. Development Equipment Module Number Function mCookie-CoreUSB 1 Core board mCookie-Hub 1 Sensor pin board Microduino-Sound 1 Sound detection sensor Other Hardware Equipment One USB cable Preparation Setup 1: Connect Microduino-Sound and the A0 analog port of the Hub together. That analog port A0 is the pin of detecting sound. Users can change that according to personal needs. Setup 2: Stack the CoreUSB, Hub and Sound modules to the computer with a USB cable. Experiment: To Detect Sound Intensity Open Arduino IDE and copy the following code into the IDE. #define mic_pin A0 int sensorValue; // the setup routine runs once when you press reset: void setup() { // initialize serial communication at 9600 bits per second: Serial.begin(9600); pinMode(mic_pin, INPUT); } // the loop routine runs over and over again forever: void loop() { // read the input on analog pin 0: sensorValue = analogRead(mic_pin); // print out the value you read: Serial.print("Sound:"); Serial.println(sensorValue); delay(100); // delay in between reads for stability } Choose the right port from Tools→Serial Port in Arduino IDE after compiling. Upload the program directly. After the upload, you can open the serial monitor. The displayed value reflects the current sound intensity. Program Debugging "#define mic_pin A0" defines the pin of controlling LED; A0 means Microduino A0 pin, which can connect to A6, A2, A0. Adopt "analogRead(mic_pin)" to read sound values. Video