A non-scientific test to see the step height clearance the Eufy E25 RoboVac can manage to climb and successfully pass over.
Each layer of cardboard is 5mm. After every successful pass another layer of 5mm cardboard is added until the E25 cannot pass and considers it as a blocking object.
This is just an amateur test out of curiosity and the material cardboard means that there will be a variation in height. It may get squashed so the height is slightly less. And it doesn’t necessarily fit flush against the layer below it so it could be slightly higher.
Hope it helps!