title: Toggle pin from serial COM port via batch file
body: <p>I'm attempting to use one of the pins from the serial port to toggle some outside hardware. I want to be able to call a batch file or something similar to be able to turn on/off the output of the pin. Is there a simple way to do this? </p>
  
  <p>Ideally i'd like to be able to do this with a USB port as well but I'd image it will be harder to do. Is this the case is it easy to flip one pin on a usb port?</p>
  
  <p>Cheers,</p>
  
  <p>Mark</p>