Thursday, December 4, 2025

Smart Sensor For Shock And Vibration Detection

EFY Tested Project

A standalone shock and vibration detection sensor device detects abnormal vibrations or shocks. Compact and versatile, it can be deployed in any environment requiring such monitoring. Fig. 1 displays various types of vibration sensors.

POC Video

Vibration sensors
Fig. 1: Vibration sensors
Parts List (excluding expansion circuit)
Semiconductors:
T1 – 2N2222 NPN transistor
LED1 – 5mm yellow LED
Resistors (all 1/4-watt, ±5% carbon):
R1 – 330-ohm
R2 – 3.3-kilo-ohm
Capacitors:
C1 – 10μF, 16V electrolytic
C2 – 4.7μF, 16V electrolytic
Miscellaneous:
Batt.1 – CR2032 3V coin cell
SEN1 – SW18015P vibration sensor switch (or equivalent)

Circuit and Working

Fig. 2 displays the circuit diagram of the standalone shock and vibration sensor device. It is built around transistor 2N2222 (T1), two electrolytic capacitors: one of 10μF, 16V rating (C1) and the other of 4.7μF, 16V rating (C2), two resistors: one of 330 ohm (R1) and the other of 3.3-kilo-ohm (R2), a yellow LED, and a few other components.

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T.K. Hareendran
T.K. Hareendran
Hareendran Nair TK is a lifelong electronics enthusiast, educator, and innovator whose journey from curious child to seasoned expert reflects an enduring passion for technology. With decades of hands-on experience, he has witnessed—and actively contributed to—the evolution of electronics from vacuum tubes to modern microchips.
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