The Serial is being sent too many values

Using Arduino Project Guidance
1

My code is meant to detect if there is any movement registered on my movement sensor, it is meant to just send 'S' to the serial once however it is sending 7 time, I was wondering how to make it so it just sends once.

const int sensor = A0;

void setup() {
  Serial.begin(9600);
  
}

void loop() {
  int sensorVal = analogRead(sensor);
  if(sensorVal > 2){
    Serial.write("S");
    delay(500);
  }
  
}

Any help would be appreciated.

2

Take a look at the state change detection example in the IDE.

3

You need to print when sensorVal becomes greater than 2 rather than when it is greater than 2

Look at the example suggested by AWOL

4

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