arduino sw-18010p vibration sensor connections | All About Circuits – All About Circuits


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i have a vibration sensor like that but it has 4 pins. Normally i have water level sensor module, too but it only has 3 pins (input, Vin and gnd). Water sensor makes LED on when it has water on it. then i replaced this vibration sensor to arduino same the way i connect water sensor but it doesn't work. could you please help me how can i make led logic 1 when sensor is vibrated.

the code i used:

const int waterSens = A0;
const int led = 9;
int sensorVal;
void setup() {
pinMode(led, OUTPUT);
void loop() {
  int sensorVal = analogRead(waterSens);
  if(sensorVal > 200){
    digitalWrite(led, HIGH);
   digitalWrite(led, LOW);

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