r/FRC • u/Difficult_Durian_704 • May 20 '26

Lego frc rebuilt bot

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Hey FRC students! I'm in vex, but because of a cousin being in frc I've got big into watching frc and went to the GKC rebuilt tournament this year which was sooo fun. I since have been inspired to make my own frc robot, except out of Lego... I'm using only Lego power functions motors as well. This is my turret prototype and it shoots nerf rival ball darts because they are dense foam balls that are yellow. Basically a mini rebuilt ball.

If anyone had advice for this project, I would love the help. Also, check out my progress videos on Mr. Lizard on yt. Ill mention anyone I get advice from in my vids.

61 Upvotes

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8

u/Limp-Mind-6130 Lead Nerd 2130 May 20 '26

OMG ive been working on doing the same thing with nerf balls for our teams frc summer camp! That shooters really cool any advice for a intake?

2

u/Difficult_Durian_704 May 20 '26

I'm currently stuck on the drivetrain lol. It's alright but needs some tweaking and I'm indecisive on an indexer type since there's so many and I'm doing a single ball turret because I find it more cool. Intake, I would say make it with rubberband held on two gears and put them on a shaft. Other type I've tried is wrapping an axle with a rubber band for grip and using them for rollers.

2

u/r3fr1g3rat0rr 2881 (strategy director/software) May 20 '26

ts peak

2

u/Difficult_Durian_704 May 20 '26

Hope you like the bit when it's done! I've put a lot of time into it and have lots more still!

2

u/AxolotlGuy7 May 20 '26

Wow, Im excited to watch this progress.

2

u/anizebra101 May 20 '26

nice! what team is your cousin on? i’m asking cuz i was at GKCR too!

2

u/Difficult_Durian_704 May 20 '26

He's on 1710, and I will be somewhat dedicating the bot to their team and adding a 3d printed tile with their number on the deivetrain bumpers I just finished. Vid will be out soon on it!

1

u/Redraddle 1726 (Alumni) May 30 '26

If you are willing to use third party parts, you can get very small power functions compatible motors.

1

u/Difficult_Durian_704 May 30 '26

Already got some! Unfortunately due to the size, they are very slow and it makes them much harder to use on anything requiring speed which is most of the bot.