text: #!/usr/bin/env node
  var b = require('bonescript');
  
  var leds = ["USR0", "USR1", "USR2", "USR3", "P9_25"];
  
  for(var i in leds) {
      b.pinMode(leds[i], b.OUTPUT);
  }
  
  var state = b.LOW;
  for(var i in leds) {
      b.digitalWrite(leds[i], state);
  }
  
  setInterval(toggle, 1000);
  
  function toggle() {
      if(state == b.LOW) state = b.HIGH;
      else state = b.LOW;
      for(var i in leds) {
          b.digitalWrite(leds[i], state);
      }
  }
  