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TZS 32,000
In stock
Features & Specifications Operating Voltage: 3.3 Volts – 5.0 Volts DC Current driving Capability: 15 mA Vibration Sensor module dimensions: 3.2cm x 1.4cm The vibration sensor is a close type switch by default. An internal 10K potentiometer is given to calibrate the sensitivity of the sensor. A low-power voltage LM393 comparator chip to binarize the analog signal and has a driving ability of 15 mA is provided in the sensor. SW-420 also has two status LEDs for power and output indication. The module has a fixed bolt for easy installation. It is microcontroller-friendly and can be interfaced with any of them. SW-420 Working Principle The SW-420 is a switch that operates by the opening and closing of the electrical contact. By default, the vibration sensor is in a closed state. When no vibrations are sensed, it remains closed or in a conduction state. As soon as vibration is detected by the sensor, the contacts open and the resistance rises. Due to this, a pulse is produced and triggers the circuit. It is passed on to the LM393 voltage comparator IC that digitizes the signal and further makes it available on the digital output pin of the module. Circuit Diagram The concerned SW-420 vibration module has three connections i.e VCC, GND, and D0. The power pins of the microcontroller are connected to these pins while the digital output pin which is internally connected to the output pin of the comparator is joined to one of the output pins of the microcontroller. By BONHOMES LTD
