Example Code for Arduino-Basic Usage

Hardware Preparation

• DFRduino UNO R3 (or similar) x 1
• DFRobot Gravity: Digital Shake Sensor x 1
• Gravity 3P digital wire (or Dupont wires) x 1

Software Preparation

• Arduino IDE

Wiring Diagram

Sample Code

const int interruptPin = 2;  // D2 pin is connected to interrupt pin
const int ledPin = 13;       // D13 pin connected to LED

volatile bool interruptFlag = false;  
unsigned long lastInterruptTime = 0;  
const unsigned long debounceDelay = 1000;  // Interrupt anti-shake delay time

void setup() {
  pinMode(ledPin, OUTPUT);      
  pinMode(interruptPin, INPUT_PULLUP); 
  attachInterrupt(digitalPinToInterrupt(interruptPin), handleInterrupt, RISING);  
}

void loop() {
  if (interruptFlag) {
    interruptFlag = false;  
    if (millis() - lastInterruptTime >= debounceDelay) {
      digitalWrite(ledPin, !digitalRead(ledPin));  
      lastInterruptTime = millis();  /
    }
  }
}

void handleInterrupt() {
  interruptFlag = true;  
}

Result

• In the direction indicated by the arrow on-board, every time the module is shaken, the ON indicator on the sensor will flash once. The indicator L on the Arduino UNO will be toggled once.