I recently performed some repairs on my ancient #Roomba.

Since the repairs I noticed a change in behaviour. It occasionally focuses on a particular section of floor. While doing so, a "dirt detect" light I never noticed before comes on.

The repairs I made had nothing to do with this function (I replaced a wheel motor). I *think* I inadvertently wiped clean the "dirt detect" sensors.

There's irony there, right? My cleaning robot was so dirty it didn't function properly.