code: func (b *Driver) Right(val int) error {
  	b.pcmdMutex.Lock()
  	defer b.pcmdMutex.Unlock()
  
  	b.Pcmd.Flag = 1
  	b.Pcmd.Roll = validatePitch(val)
  	return nil
  }
docs: // Right tells drone to go right. Pass in an int from 0-100.