XY plotter config

  board.on("ready", () => {

    board.io.accelStepperConfig({
      deviceNum: 0,
      type: board.STEPPER.TYPE.FOUR_WIRE,
      motorPin1: 5,
      motorPin2: 6,
      motorPin3: 7,
      motorPin4: 8,
      stepSize: board.STEPPER.STEP_SIZE.WHOLE
    });

    board.io.accelStepperConfig({
      deviceNum: 1,
      type: board.STEPPER.TYPE.FOUR_WIRE,
      motorPin1: 9,
      motorPin2: 10,
      motorPin3: 11,
      motorPin4: 12,
      stepSize: board.STEPPER.STEP_SIZE.HALF
    });

    board.io.accelStepperSpeed(0, 400);
    board.io.accelStepperSpeed(1, 400);

    board.io.multiStepperConfig({
      groupNum: 0,
      devices: [0, 1]
    });

    board.io.multiStepperTo(0, [2000, 3000], () => {

      board.io.accelStepperReportPosition(0, value => {
        console.log(`Stepper 0 position: ${value}`);
      });

      board.io.accelStepperReportPosition(1, value => {
        console.log(`Stepper 1 position: ${value}`);
      });

    });

  });