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1. We use the SW-420 normally closed vibration sensor produced by our company
2. Comparator output, clean signal, good waveform, strong driving ability, over 15mA
3. Working voltage 3.3V-5V
4. Output form: Digital switching output (0 and 1)
5. Equipped with fixed bolt holes for easy installation
6. Small PCB size: 3.2cm x 1.4cm
7. Using a wide voltage LM393 comparator
Instructions for use:
1. When the product is not vibrating, the vibration switch is in a closed and conducting state, and the output end outputs a low level, with a green indicator light on;
2. When the product vibrates, the vibration switch is momentarily disconnected, and the output terminal outputs a high level. The green indicator light does not light up;
3. The output end can be directly connected to the microcontroller, which detects high and low levels, thereby detecting whether there is vibration in the environment and playing an alarm role
Package Included:
SW-420 Vibration Sensing Module * 5
kcwcc
Reviewed in Canada on January 12, 2025
The sensitivity adjustment is fairly coarse. The onboard LEDs are not really useful but they do let you know it is working and the trip point I suppose, a bit of a waste of battery though is these are inside a box. The amount of force needed to trigger the module is quite variable in practice. I have issues with repeatability but YMMV.
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