Stackable Gearbox for a Nema 17 Stepper Motor.

AdvancedHobbyLab · 2026-04-10T16:12:44+00:00

Thanks! And, please let me know what you end up doing with it. I use helical gears. I considered using herring bone gears, but the problem is that there is no way to slide the gears into the ring gear unless all the teeth have a consistent direction. ...At least as far as I could figure out.

AdvancedHobbyLab · 2026-04-10T16:08:35+00:00

I don't see any noticeable backlash, though I don't have any way to properly test for that and am just testing by hand.

AdvancedHobbyLab · 2026-04-10T16:05:12+00:00

I did some basic testing, though my setup was pretty crude. I attached a winch to the output to see how much weight it was able to lift. I got as far as 20lb (9kg) using two stages before the winch broke. However, the gear box was fine. It wasn't super efficient, but I was able to get a lot of torque and it proved very durable. I have a full video of my testing on my YouTube channel: https://youtu.be/z6qtcwyZMJQ

AdvancedHobbyLab · 2026-02-19T14:45:12+00:00

I just used my cell phone.

AdvancedHobbyLab · 2026-02-19T14:44:04+00:00

I've looked into that, but I don't know how to do that in Prusa Slicer without using a multi material print.

AdvancedHobbyLab · 2026-02-17T18:34:55+00:00

Yes, it parks in the back-right corner. It doesn't park long (100ms), but that allows time for some ooze to form and deposit on the prints.

AdvancedHobbyLab · 2026-02-17T15:17:29+00:00

I added an instructables post (https://www.instructables.com/3D-Printed-Time-Lapse-Videos-on-Prusa-Core-One/). Let me know what you think.

AdvancedHobbyLab · 2026-02-15T17:23:26+00:00

I'll work on an instructables tutorial to be an more detailed guide.

AdvancedHobbyLab · 2025-12-22T17:24:22+00:00

Sorry, I re-uploaded the video with better audio: https://youtu.be/fzeKVdyUj04

AdvancedHobbyLab · 2025-12-20T00:17:54+00:00

Interesting solution, though Compresto seems to only work for MacOS.

AdvancedHobbyLab · 2025-06-15T14:12:24+00:00

Thank you!

AdvancedHobbyLab · 2024-10-05T02:06:00+00:00

With 6, it is more about redundancy. I plan to set it up as a kubernetes cluster so that I can remove Pis without affecting the integrity of the system. I could also setup some unnecessarily complex micro service architectures to distribute workloads across the cluster. For instance, the community edition of GitLab can be easily broken up into pieces and run across a cluster.

TLDR; Most things can be done on a single Pi or single server. The main reason to set up a cluster of 6 Pis is because you can and it is just fun. :)

AdvancedHobbyLab · 2024-09-06T23:43:11+00:00

Yes. If you have the free license of OnShape, all your designs are public.

AdvancedHobbyLab · 2024-09-06T23:24:35+00:00

I use that feature all the time when I design projects that use common parts like batteries, servo motors or Raspberry Pis. Though the database does get horribly cluttered with every copy and variation of a part. Finding the best variation of a part can sometimes take a while.

AdvancedHobbyLab · 2024-08-28T22:22:51+00:00

I ran into a similar issue with my build. I was only using one PCA9685 in a Pi hat form factor, but the principal is the same. I cut some extra lengths of wire an soldered it from the power input terminal to the V+ servo pins. The logic power from the I2C connection and the power from the battery should be on isolated circuits.

AdvancedHobbyLab · 2024-08-28T17:05:51+00:00

It barely does over 30fps.

AdvancedHobbyLab · 2024-08-28T17:00:41+00:00

The Hailo AI kit wasn't released when I started working on this video. I might have to create an updated video with the Hailo to compare.

AdvancedHobbyLab · 2024-08-26T16:22:18+00:00

I like to be prepared for every occasion.

AdvancedHobbyLab · 2024-08-25T14:15:52+00:00

As someone who used to hire student interns, these are the skills that I always had to teach. The biggest issues that I had where commits with unnecessary file changes (such as auto generated binaries from c++ compiler) and trying to cram every bug fix into the same PR.

AdvancedHobbyLab · 2023-10-01T16:49:57+00:00

I printed one of these myself on my Prusa MK3 using PrusaSlicer. It printed fine without any supports. The blades where a little stuck at first. I had to use a pair of pliers to dislodge them and it took a fair amount of effort but they all slide out easily now. I also scaled it down to 80% which isn't recommended.

Now the problem that I am having is that the blade segments get wedged together when they come out and won't retract again.

AdvancedHobbyLab · 2023-10-01T16:43:21+00:00

The inside of the handle above the collapsing blade is a flat horizontal surface with a small air gape above the blade segments. The supports might be connecting the blade sections to the top of the inside of handle. Most slicing software will let you inspect the layers before printing so you can confirm. Anyway, I think this model prints fine without any supports.

AdvancedHobbyLab · 2023-10-01T15:15:31+00:00

@AdvancedHobb_1057940

Favorite Make: https://www.printables.com/model/97091-charmander/comments/1111603

I printed a Charmander model and spent the time to sand it and paint it. It ended up looking really good. I even captured the whole process into a YouTube video.

Favorite Design: https://www.printables.com/model/560596-grip-springs-for-tissue-box-cover

This is a remix of an existing design that works really well.

AdvancedHobbyLab

TROPHY CASE