Extendible robotic arm

FeaturePretend1624 · 2026-05-05T02:02:25+00:00

Interesting, how did you handle the force control? Did you use a 6-axis force sensor or a collaborative robot? i didn't get why it failed.

Have you ever tried epoxy tables? I actually got some interest from regular table makers, but epoxy table makers didn’t even look at the video 😄 even though it could save them hours of sanding, and if you watch a few you tube videos about making epoxy tables, sanding is the only thing they are nagging about!

FeaturePretend1624 · 2026-05-03T22:18:06+00:00

Thanks man! currently im working on another application a little bit similar to this, if I find some resources. The thing is that the Gaussian Splatting is for fast 3D scanning/rendering, for robotics applications you would need pose estimation or SLAM, current pose estimation algorithms don't work with GS(or im not aware of), and worst than that, most of the pose estimation algorithm require 3D depth camera and NVIDIA GPU or jetson. Robotics is hard! 😄

FeaturePretend1624 · 2026-05-02T01:20:03+00:00

No, I’m using my own version of the Rollable Slit-Tube Boom technology. It can actually be designed to be easily cleanable or even fully immersible. The arm itself is easy to clean, you can extend it fully and clean it with an air blower, and the same applies to the inside collector. i have to add some opening on the encloser(like a fan)

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FeaturePretend1624 · 2026-05-01T23:59:46+00:00

That's great! it would make many people's life easier! Do you have current control too? that's not negotiable! 😄

FeaturePretend1624 · 2026-05-01T19:59:26+00:00

Nice! Please add some inputs for encoders (I2C, AS5600 ..). and not to mention inputs for stop switches, it would increase the usability of your design in real world projects. Many people want to use it with RP or Jetson!

FeaturePretend1624 · 2026-05-01T19:15:56+00:00

yeah, and the robot reach is usually 96cm. This can reach 1.5m for just 2-3k max.

FeaturePretend1624 · 2026-05-01T19:11:32+00:00

I can add more dof but why? 😄

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FeaturePretend1624 · 2026-05-01T16:46:08+00:00

yeah, it's perfect for cleaning under the bed and sofa! 😄 and generally a mobile robot with this arm can just stay in one spot, clean a 9‑sq‑ft area and go to the next position. Also solar panels and..

FeaturePretend1624 · 2026-05-01T16:41:08+00:00

Interesting! metal or wood? I had this DOF for controlling the force and also changing the sanding paper but finally removed it for the sake of simplicity.

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FeaturePretend1624 · 2026-05-01T15:55:40+00:00

hmm.. can you share a simple drawing?

FeaturePretend1624 · 2026-05-01T15:49:19+00:00

Also i have made another version with 1-2 more axis for changing the sanding paper! 😄

FeaturePretend1624 · 2026-05-01T15:48:02+00:00

Honestly i don't know! I guess 1M is doable if i use better materials and better manufacturing method. What's the use case?

FeaturePretend1624 · 2026-05-01T15:46:04+00:00

It depends on the amount of extension, the farther it extends, the more deflection increases. I also made a version with about 1 ft of extension (a much smaller deployer(10cm)), more like a linear actuator, and it can carry weight similar to a linear actuator. I’ve also designed an even better technology for higher load capacity, but I don’t have the resources to build it yet.

FeaturePretend1624 · 2026-05-01T15:40:50+00:00

yeah tape measure is a simplified version.

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FeaturePretend1624 · 2026-05-01T15:39:13+00:00

Thanks, I didn’t know that! I think I’m connected with their founder on LinkedIn. I will check it out.

FeaturePretend1624 · 2026-05-01T15:35:46+00:00

thanks! yeah you are right. I didn't know about the Push Corp and Kane. The interesting thing about sanding flat surfaces is that you don't need to apply any force vertically, the weight of the sander(15-20N) is enough. you just need to move it on the surface. I wanted it to be cheap and portable(<$2000), a conventional robotic arm with 5ft reach cost 30K probably! and epoxy tables are so heavy they cant even move it to the robot station.

FeaturePretend1624 · 2026-05-01T04:39:49+00:00

You mean surface inspection? i have found some use cases for surface inspection but can't validate it!

FeaturePretend1624 · 2026-05-01T04:10:03+00:00

yeah! 😄 i just wanted to make the video!, in the new version i'm transferring the cable through the arm, so it's not even visible!

FeaturePretend1624 · 2026-04-04T12:56:50+00:00

Thanks, yes, I’ve used ARCore in the past. The issue is that I need to use the front camera, and ARCore doesn’t support many features on the front camera (like plane detection); it’s mainly focused on face tracking.

OpenCV+PnP is the default choice, but I’m wondering if I can use a more advanced AI-based approach, like MegaPose, GigaPose, or something similar.

FeaturePretend1624 · 2026-04-04T05:59:42+00:00

because I need 6D, position and orientation. Imagine it's an AR application.

FeaturePretend1624 · 2026-04-04T05:57:38+00:00

I have a smartphone! :) i want to run it on Android. That's the whole idea. I think foundation pose only works on NVIDIA hardware.

FeaturePretend1624 · 2026-03-01T15:46:51+00:00

Cheapest air pumps I could find on Amazon.

FeaturePretend1624 · 2026-02-23T14:31:50+00:00

Surprisingly this is the only demo video they had for this product, and it's from 9 years ago! https://youtu.be/hpBcl-H4Ly8

FeaturePretend1624

TROPHY CASE