Grove Zero - Sound Sensor
• What is it？
The Sound Sensor listens to the sound around it. You can use it to visualize the sound level or as a sound trigger to control your circuit.
• How it works？
The Sound Sensor is a simple microphone. It measures the noises nearby and converts the sound waves to electrical signals. When the noise is lower than a certain level, which is called the LOW Threshold’, the sensor detects a ‘QUIET environment’. When the noise is above a ‘HIGH Threshold’, it detects a ‘LOUD environment’.
Try to use the LOW/HIGH Threshold to trigger events like display the an ‘unhappy face’ on LED matrix when the environment is ‘Loud’.
• Try it
Connect the circuit as shown below, then press the buttons and see what will happen.
• Real World Analogy
Human Ear, Microphone
• More Information