From Blecky‘s MappyDot project on hackaday.io:

MappyDot mBot

I’ve been getting a demo up and running for Maker Faire with the mBot robit and MappyDots

There is an extension for scratch which will be on the repo shortly, to allow you to connect a few MappyDots up to the mBot, to get it to drive around and avoid running into your legs or run away from your cat.