His latest project is a sophisticated line follower. You’ve probably seen “bang-bang” line followers that just use a photocell to turn the robot one way or the other.

Some readers may recall building a line-following robot during their school days. Involving some IR LEDs, perhaps a bit of LEGO, and plenty of trial-and-error, it was fun on a tiny scale. Now imagi… ...

Line-us has its own interface for connecting with Scratch, Arduino, Raspberry Pi, and Python, and can be adapted in a number of ways. You could give it a set of watercolors to paint with, or have ...