The device was fine for me because of the height and time saving, until I stopped using it for a few months. When I wanted to use it again, the battery was empty and I had to recharge it, but after that it no longer reacted to hurdles and walls. Just bumped into them. I don't think it's the steering but the sensor. To the hobbyists; I would imagine it could be fixed - I think it just discharged everything. But I have neither the means nor the time to do it. That's why I could give it away, otherwise it would just collect dust in the corner.