Reference
Last revision 2026/01/07
The article delves into the principle of unidirectional sensitivity in vibration sensors, illustrating how effective low-level interrupt pulses are generated, emphasizing the importance of stable trigger detection and signal processing to enhance sensor performance.
Principle
The vibration switch used by the sensor is unidirectional sensitivity. As shown in the above figure, the user can hold the module just like the logo on the module, and shake it in the direction of the arrow indicated on-board (from +Y to Y-). This will generate an effective low-level interrupt pulse on the “D” pin and a bright flash on the indicator ON. It is not sensitive to shaking, bumping or vibration in the X or Z direction, but can still trigger an interrupt if the shaking is severe.
When used, the detection of interrupt signals and an appropriate increase in the dithering time will make the trigger more stable.
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