I recently bought a robot vacuum cleaner and found out that it cannot leave some rooms due to a difference in layer height, so I designed these ramps which can be printed out and joined together, making it easier for your robot vacuum to leave the room.
The length of the ramp when joined together is 82cm.
The height of the ramp with a gap is 1.5cm
The height of the ramp with no gap is 2cm
NOTE: Don't print the ramp in black or dark colour as this can trick the vacuum's sensor into thinking it's at the edge of the stairs and therefore won't enter the room at all. You can paint it a different colour if you do print the ramps in a dark colour.
Make sure to get the measurements of your doorway in case your measurements are different from mine.
The author hasn't provided the model origin yet.