code: func (d *Driver) Flip(direction FlipType) (err error) {
  	buf, _ := d.createPacket(flipCommand, 0x70, 1)
  	d.seq++
  	binary.Write(buf, binary.LittleEndian, d.seq)
  	binary.Write(buf, binary.LittleEndian, byte(direction))
  	binary.Write(buf, binary.LittleEndian, CalculateCRC16(buf.Bytes()))
  
  	_, err = d.cmdConn.Write(buf.Bytes())
  	return
  }
docs: // Flip tells drone to flip