38kHz signal with breakout js

gistfile1.js

arduino.setDigitalPinMode(11, Pin.PWM);
var led = arduino.getDigitalPin(11);
console.log(led);
var freq = 0.000026316; // 38kHz = 38000 cycles per seconds = 38000^-1 seconds per cycle = 0.000026316 seconds per cycle
var amplitude = 2.0;
var offset = 0;
var phase = 0;
var repeat = 0; 
var sinewave = new Oscillator(Oscillator.SIN, freq, amplitude, offset, phase, repeat);
led.addGenerator(sinewave);
sinewave.start();