IR Sensor Triggered by Servo

Other Hardware Sensors
1

For a project I am working on I am using an IR sensor and a servo (I have other parts too but they aren't important to the problem I am having with the IR sensor) and have found that whenever the servo is set to a different position it triggers the IR sensor.

This is the code for the IR sensor:

int IRSensor = 22;

void setup(){
  pinMode(IRSensor, INPUT);
}

void loop(){
  int IRStatus = digitalRead(IRSensor);
  if(IRStatus != 1){
    //do stuff
  }
}

For the servo I am just using the normal Servo library, have it connected to digital port 10, and for the code I just use:

myservo.write(180); // when opening it

or

myservo.write(0); // when closing it

I know it is the servo that is causing the IR sensor to trigger because it only happens when the servo is opened or closed. I don't believe it has anything to do with my code either because it doesn't happen if I do everything as normal but don't have the servo connected to 5v and ground.

I also don't believe it is due to the servo drawing power because I have my Arduino Mega board connected to a power supply and my computer.

Has anyone experienced this before or have any insight on what might cause this?

2

You need a separate power supply for the servo that can supply at least 1 Amp.

3

JCA34F:
You need a separate power supply for the servo that can supply at least 1 Amp.

Thanks, that fixed it.

What causes the IR sensor to register a signal when the power to it drops?