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 and then download the program directly. After download, 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