Key Features:

✔ Vibration/Impact Sensing – Detects physical shocks or knocks via spring-based mechanism. ✔ Digital Output (High/Low) – Outputs LOW when vibration is detected, otherwise HIGH. ✔ Adjustable Sensitivity – Fine-tune with the onboard potentiometer. ✔ Wide Voltage Support (3.3V–5V) – Works with most microcontrollers. ✔ Compact & Breadboard-Friendly – Standard 3-pin interface (VCC, GND, OUT).

Applications:

• Interactive Projects – Knock-controlled lights, sound triggers.

• Security Alarms – Detect tampering or break-in attempts.

• Industrial Monitoring – Machine vibration/failure detection.

• DIY Drum Kits – Convert taps into digital signals.

Technical Specifications:

• Operating Voltage: 3.3V–5V DC.

• Output Signal: Digital (TTL-compatible).

• Response Time: <1ms (fast reaction to impacts).

• Sensitivity Range: Adjustable (potentiometer-controlled).

• Dimensions: 20mm × 15mm.

Wiring Guide:

• VCC → 3.3V/5V MCU power.

• GND → Ground.

• OUT → Digital input pin (e.g., Arduino D2).

Package Includes:

• 1x KY-031 Knock Sensor Module.

Why Choose the KY-031?

✅ Plug-and-Play – Works with simple digital reads (no ADC needed). ✅ Low-Cost & Reliable – Great for prototyping impact-sensitive systems. ✅ Easy Calibration – Adjust sensitivity for light taps or strong knocks.