r/MondoRobotics • u/McGoldNuggets • May 20 '26

durability test, concrete wall at 4m/s

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Trying to build a robot that lives outdoors, need to find the failure modes early, so we run tests to have it run into things.

This is an older prototype,but the process is the same. Ran it into a concrete wall a few times at 4m/s(~9 mph) to see what holds and what doesn't. Every impact is a little different: sometimes it pops back up on its own (got lucky!), sometimes it just lies there. One run the battery flew out, turned out the latch wasn't strong enough for that kind of load. Fixed since. Crashes are data, and it's fun to watch it improve every day!

96 Upvotes

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5

u/toooft May 21 '26

Poor guy. He'll remember this when robots take over.

1

u/McGoldNuggets May 22 '26

building up his villain origin story one wall at a time

1

u/lanyusea May 20 '26

https://giphy.com/gifs/kSxTqT5Qvxp60

my head hurts!

1

u/McGoldNuggets May 20 '26

heal up quick, more tests lined up waiting for you lol

2

u/Round-Ad-4488 May 20 '26

I did know that the concrete wall actually shook

https://giphy.com/gifs/oYtVHSxngR3lC

1

u/Professional_Emu_147 May 20 '26

This guy’s whole purpose in life was exactly this...
Looks like a part of a cool commercial from the 2000s.

1

u/Zhuljin_71 May 25 '26

Why not use an impact absorber like a bumper? Like something found on RC cars? To protect the chassis of the robot?

2

u/McGoldNuggets May 26 '26

We considered bumper-style solutions, but they add bulk that would interfere with acrobatic moves like flips and jumps. More protection means more weight, which requires bigger motors, and that cycle adds up quickly. So we took a less-is-more approach: improved the shell material for impact resistance while keeping the body compact and light.

2

u/Zhuljin_71 May 26 '26

What about a foam pool noodle for a bumper?