Скачать или смотреть How to make automatic coin bank using Arduino || Projek rbt tingkatan 3 tabung || Wiring

This video will show on how to make coin bank that can do automatic calculation without using coin acceptor machine. This is a low cost coin acceptor that using arduino to do the calculation It using piezo sensor to detect the coin. A piezoelectric sensor, often referred to as a piezo sensor, is a device that uses the piezoelectric effect to measure changes in pressure, acceleration, temperature, or force by converting them into an electrical charge. The piezoelectric effect is a phenomenon in certain materials (such as quartz, Rochelle salt, and various ceramics) where mechanical stress or strain applied to the material generates an electrical charge. Here's how a piezoelectric sensor works: Mechanical Force or Pressure: When a force or pressure is applied to the piezoelectric material, it deforms or generates mechanical stress. Generation of Electrical Charge: This mechanical stress leads to the creation of electrical charge imbalances within the material. These charges accumulate on the surfaces of the material. Measurement of Charge: The electrical charge generated can be measured and converted into a voltage or current signal. This signal can be amplified and processed to provide useful information about the force, pressure, or vibration being measured. Piezoelectric sensors are used in various applications, including: Acoustic Transducers: They are used in microphones and some types of pickups for musical instruments because of their ability to convert sound vibrations into electrical signals. Vibration and Impact Sensing: Piezoelectric sensors are used in industrial machinery and automotive applications to measure vibrations and impacts. Pressure Sensors: They are used in pressure measurement devices, such as those found in industrial and medical equipment. Strain Gauges: Piezoelectric materials can be used as strain gauges to measure deformation and stress in structures and materials. Accelerometers: These sensors are used to measure acceleration and can be found in applications like airbag systems, seismometers, and inertial navigation systems. Sensors for Touch and Force: They are used in some touch-sensitive devices and force-sensing applications, like in some styluses and touchscreens. Piezoelectric sensors have the advantage of being rugged, fast-responding, and suitable for a wide range of environmental conditions. However, they can be sensitive to temperature changes and can exhibit hysteresis, meaning that their response may depend on previous input conditions.