My bottom board came in today replacement for the one I burned out last month trying to hook up second ultrasonic sensor. This time I did it correctly by shutting off the main battery switch first, LOL! So I noticed there is an increment value that can be raised higher for the sonar radar scanner. I noticed putting both sensor increments at 10 instead of 1, Both The radars scan much faster. Is this a benefit to see objects faster? Or is this going to miss more objects? I still need to put robot body back together and see what happens but both sonars see my hand in the way and do the backing up thing, Good sign!