Description
Reviews
| Brand | - |
| Category | Robotics / STEM Teaching Tools / Sensors |
| Origin | - |
| Sensor Type | Piezoelectric Ceramic |
| Output Signal | Analog Voltage |
| Operating Voltage | 3.3V - 5V DC |
| Compatibility | Arduino, MCU, DIY Boards |
| Sensitivity | Adjustable via Potentiometer |
| Mounting Hole Diameter | 3mm |
| PCB Dimensions | 32mm x 14mm |
| Connector Type | 3-Pin Header (GND, VCC, SIG) |
| Response Time | Fast Response to Vibrations |
| Application Scope | Shock Detection, Tap Sensing, Alarm Systems |
Anonymous
Mar 25, 2026
Rating: 5/5
Reliable and sensitive
I've used several piezo sensors before, and this Keyes module offers excellent consistency. The signal is clean, and noise is minimal when wired correctly. Great addition to my robot's collision detection system.
Anonymous
Mar 23, 2026
Rating: 4/5
Good value, needs calibration
The module is compact and well-built. You do need to spend some time adjusting the potentiometer to get the right sensitivity for your specific use case, but once calibrated, it is very reliable.
Anonymous
Mar 18, 2026
Rating: 5/5
Simple integration
Plug and play with standard microcontrollers. The analog reading varies smoothly with vibration intensity, allowing for nuanced code logic rather than just binary on/off states.
Anonymous
Mar 16, 2026
Rating: 5/5
Great for learning electronics
Bought this for a university project on vibration monitoring. The documentation online is plentiful, and the sensor responds quickly to taps and shakes. Highly recommend for beginners.
Anonymous
Mar 13, 2026
Rating: 4/5
Works well for door alerts
Using this to trigger an LED when someone knocks on the door. It picks up even light knocks. Only giving 4 stars because the header pins were slightly bent upon arrival, but easily fixed.
Anonymous
Mar 01, 2026
Rating: 5/5
Perfect for my Arduino security project
This sensor works exactly as described. I connected it to my Arduino Uno and was able to detect vibrations on my window frame within minutes. The analog output makes it easy to set custom sensitivity thresholds.
Q: How do I adjust the sensitivity?
A: There is a small blue potentiometer on the board. Turn it clockwise to increase sensitivity or counter-clockwise to decrease it while monitoring the output value in your serial monitor.
Q: Is this suitable for detecting heavy machinery vibrations?
A: This sensor is designed for light to moderate vibrations typical in DIY electronics, such as taps, knocks, or small motor oscillations. It may saturate or be less effective for industrial-grade heavy machinery monitoring.
Q: Can I power this directly from a 3.3V ESP32?
A: Yes, the operating voltage range is 3.3V to 5V, so it is fully compatible with 3.3V logic boards like the ESP32 without needing a level shifter.
Q: Does this module output digital or analog signals?
A: This module outputs an analog signal proportional to the vibration intensity. However, many versions of this board also include a comparator for a digital output if you need a simple high/low trigger.
Q: What library do I need for Arduino?
A: No specific external library is required. You can read the sensor using the standard analogRead() function in the Arduino IDE. Example code is widely available in the Arduino community forums.
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