Let's Make Robots!

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ChuckCrunch's picture


how much does your current set up cost?

Cichaczech's picture

Nice job :)

NilsB's picture

The avoidance with the speed is impressive. Some of the LMRs use gear motors with a ratio from 120:1 to 224:1. This makes the robot slower and your heartbeat is low while the robot moves around.

What I found interesting to read was this article about the 3-point-turn and the levels Clear, Attention and Danger. If you haven't read this have a look into it. The behavior would i.e. be different than yours in the video at 0:44. The robot would have maybe seen the obstacles as a trap and make a 3-point-turn out instead of moving through.

Welcome to LMR.


Schmigneous's picture

That's really interesting... My current program has three possible modes -- Roaming, Navigating, and Stuck -- that correspond to the three levels mentioned in that article. The Stuck mode never gets triggered in the video, but basically the robot just stops and rotates until it sees a clear path (luckily 2WD affords a 1-point turn instead of 3).

ignoblegnome's picture

Speedy. Very nice first project! 

Obstacle avoidance and navigation can be tricky at that speed, and you seem to pull it off pretty well.

Schmigneous's picture

Speed was definitely a goal with this project. It's easier to imbue a robot with personality when it's quick. Slow robots are boring (IMHO). The crazy thing is the video shows the robot running at half speed. When I tried going full  speed on that dusty shop floor it spun out like a muscle car on a frozen lake. High-class problem, I guess.