One simple life hack:
Is your robot vacuum cleaner trying to pass directly over your laundry hanger bottom bars? Is it often getting stuck there?
Just #3DPrint and mount these feet and make the bar a bit higher. Robot then registers the bar as regular obstacle and just goes around. 👍
https://www.printables.com/cs/model/20314-roomba-stopper-for-laundry-hanger