Controlling two DC motors with keyboard and more

Other Hardware Motors, Mechanics, Power and CNC
4

Very simple control by a sent character.

int ledPin = 13;

void setup()
{
  Serial.begin(9600);
  pinMode(ledPin, OUTPUT); 
  Serial.println("serial on/off test 0021"); // so I can keep track
}
   
void loop()
{
  char c = 0;
  if (Serial.available() > 0) 
  {
    c = Serial.read();
    if (c == '1')     // assuming you send character '1', not a byte with value 1 
    {
       digitalWrite(ledPin, HIGH);
    }
    if (c == '0')
    {
       digitalWrite(ledPin, LOW);
    }
  }
}