The Lego Line Follower Challenge

Line Follower robots are fun.

What they do is very simple (they follow a line drawn on the floor), but doing it fast to win a competition is tricky. In this case, to add spice to the challenge, the robot must be built entirely out of Lego parts, including all the electronics!

In this talk we’ll see what kind of algorithms can be used to control the robot, and how detailed telemetry is essential to understand its behavior.

We’ll also see how using embedded Rust and implementing our own async runtime can make the software easier to understand and at the same time more performant.