Terrible Accidents & funny Failures: my Robot Vacuum Cleaner lost his Path

When I came home yesterday, I‘ve already heard the sound of my poor vacuum cleaner. Whenever he gets stuck, he sending a kind of „ping“ sound. This time he didn’t recognize the stairs and fell down. Luckily not the whole stairs, so he wasn’t broken.

Generally the robot cleaner is doing a good job and saving around 15 minutes of time instead doing it by my own. When moving to my actual apartment I‘ve lost the special tape to tell the robot not to cross, so sometimes he likes also to clean the stairs, which is unfortunately not the best environment for him...