Soil Moisture Sensor, Sound Sensor, Piezo Sensor, Dust Sensor, Metal Detector Sensor

1. Why are sound sensors used?

• A sound sensor is a type of module that senses sound. Generally, this module is used to detect sound intensity. Applications of this module mainly include switches, security and monitoring. The accuracy of this sensor can be changed for your convenience. Sound sensors work similarly to human sound detection. It has a diaphragm that converts air pressure vibrations into electrical signals that are sent to a computer. Sound Sensor is used in consumer electronics such as telephones, computers, and music systems. Security and surveillance systems such as intruder alarms, door alarms. Home automation such as detecting a whistle/clap to light up your home instead of physically turning an electrical switch.

2. How does a piezo sensor work?

• Piezoelectric sensors are devices that use the piezoelectric effect to convert and measure changes in pressure, acceleration, temperature, strain, or force into electrical charge. Piezoelectric pressure sensors exploit this effect by measuring the voltage across a piezoelectric element produced by the applied pressure. They are very robust and are used in various industrial applications.