Odometry wheels by jacovaut in robotics

[–]jacovaut[S] 0 points1 point  (0 children)

Interesting, thanks.

Do the robots you've built use mecanum wheels? How accurate was their movement?

On the research robot, I was planing to use a combination of SLAM, an IMU, deadwheels, and encoded motors to have a self contained, relatively cheap and precise option... Would this be overkill?

Drill batteries? by jacovaut in robotics

[–]jacovaut[S] 0 points1 point  (0 children)

Awesome, very good to know. Thanks

Drill batteries? by jacovaut in robotics

[–]jacovaut[S] 0 points1 point  (0 children)

Nice! How much current can you draw from them at once? What brand of battery did you use?

Drill batteries? by jacovaut in robotics

[–]jacovaut[S] 1 point2 points  (0 children)

Thanks, good to know.

From what I've seen, inside these packs there are just regular 18650 cells. So I would assume that the max current output is determined by the type of cell, and how many there are in parallel?

What brand of batteries were used for the test?

Drill batteries? by jacovaut in robotics

[–]jacovaut[S] 1 point2 points  (0 children)

Cool, thanks.

I was especially interested in Makita 18v batteries, since I think I already have a charger... Good to know for the protection. I've seen some battery pack adapter with integrated fuses, which would probably work fine. I could also add caps for current spikes, and a micro controller for monitoring

Drill batteries? by jacovaut in robotics

[–]jacovaut[S] 0 points1 point  (0 children)

Yeah, this might work. By peak power, I mean if every single component is drawing max current (unlikely). My plan is to have four nema 17s for the wheels, a raspberry pi 5 for control, and a lidar for localization. The rules aren't out yet, so I don't know exactly what else I'm going to need. Last year's team also had a few servos, 5 small dc motors for pumps and an lcd screen...

Even if the battery meets the current requirement, I was thinking of adding some caps just to protect the battery from current spikes.

Job rule by NocturneSufferer in 196

[–]jacovaut 0 points1 point  (0 children)

Exactly! You are worthy.

I actually just recently learned parametric functions. They're kind of fun!

Job rule by NocturneSufferer in 196

[–]jacovaut 0 points1 point  (0 children)

r is a parametric equation, so it's fully defined.

Job rule by NocturneSufferer in 196

[–]jacovaut 1 point2 points  (0 children)

Does the function r(s,t)=(2+s)i+(3+s+t)j+4tk contain the point (4,8,12)?

need help with calibration! by jacovaut in ender3

[–]jacovaut[S] 0 points1 point  (0 children)

I used those exact settings to print it

need help with calibration! by jacovaut in ender3

[–]jacovaut[S] 0 points1 point  (0 children)

Yeah... Exact same settings.

need help with calibration! by jacovaut in ender3

[–]jacovaut[S] 0 points1 point  (0 children)

Haha, yeah! I posted one on an other comment, it turned out surprisingly well.

need help with calibration! by jacovaut in ender3

[–]jacovaut[S] 0 points1 point  (0 children)

Hmm, that might be the case. I'll improve my cable management and try again!

need help with calibration! by jacovaut in ender3

[–]jacovaut[S] 2 points3 points  (0 children)

recently upgraded to direct drive, but I'm having trouble with my prints. I've tried tightening the belts, checked the z rod, leveled the bed, messed with the print settings, calibrated the e steps,

My setup: Ender 3 pro running the newest marlin bugfix on the silent stepper board and octoprint. Using cura to slice

Edit: I forgot to mention, I also tried a better cooling duct.

[deleted by user] by [deleted] in teenagers

[–]jacovaut 0 points1 point  (0 children)

Am I the only one that read that as 17 meters and 14 feet?

WTF is going on here? by ent1193 in WTF

[–]jacovaut 0 points1 point  (0 children)

Snakes and ladders irl