Roomba horns

Roomba horns prevent the roomba from getting stucker under your furniture. This simple model works really great for me. I tested this for the 620 roomba model.

Assembly:
See the attached image for attachement of the horns to the roomba. Drill holes from behind the bumper at the red crosses (disassembly is done as described here: https://de.ifixit.com/Guide/Disassembling+iRobot+Roomba+551+Bumper/22501). Take short wood screws. If the holes are too loose, just adjust the model to get a tight fit.