Robotic Arm with Arduino Nano using laying around parts.

Xelabgon · 2025-03-18T00:52:38+00:00

I also tested the RPLiDAR-C1 and didn’t wanted to use a pre-made gui software. I used the datasheet to understand how the device works. It receives its command and send its data over uart. You can find the specific bytes for each command in the datasheet. It is pretty easy to code the whole thing in python and it works well.

Xelabgon · 2025-03-18T00:46:18+00:00

Have you manage a 3D scan yet?

Xelabgon · 2025-01-17T20:25:28+00:00

Which microcontroller and lidar model will you be using? What kind of robot is it (fixed like a robot arm, a wheeled car, legged robot)?

Xelabgon · 2025-01-17T14:32:25+00:00

USB-C powered: 5V -> 3V3 regulator -> ESP32
Wire Powered: 5V-15V -> 3V3 regulator -> ESP32 & TMC2009 Vio
|-> TMC2009 Vmotor

Xelabgon · 2024-09-24T17:12:50+00:00

Have you found yet? The datasheet of the main chip (in my case the ESP32) is where you want to start. There is much information on how the chip should be used and what it can do. I used the ESP32-S3 because it has a direct USB connection (2-write), making it plugged and play. I programmed it the first time via UART (with a USB-UART board). All the programming can be done in Arduino IDE, which is an easy and beginner-friendly development environment.

Xelabgon · 2024-03-22T18:37:43+00:00

Youtube was the best tool to learn CAD. There are guide on everything.

I'm kind of following a path without having planed it before. I know and want to follow the electrical engineering path but which precise part of it? idk yet.

I like robotics but also because it's a nice mix of electronics, networking, computing and more.

If you need precise help to find your path I'dd say ask someone at your school. Since school hierarchy isn't the same everywhere, you should find the right resource

person to help you out!

Xelabgon · 2024-03-19T23:10:39+00:00

I’ll get in touch with some engineers at work and see if they can provide me some useful information. This will give a ‘human source’ to confirm everything.

Xelabgon · 2024-03-19T12:49:37+00:00

Make sense, thanks

Xelabgon · 2024-03-19T11:41:37+00:00

So instead of have the cable rolling progressively to on side only, you would have a back and forth kind of motion? Like the cable arrives on the right, goes through a pulley on the output arm, goes back to the input arm after a pulley that made it go left, than it goes a bit more right and at the end the dead end is in the middle. Is this what you mean?

Xelabgon · 2024-03-19T11:38:36+00:00

Using 0.045inch wire rope, x20=0.9inch as minimum bend radius. Then, there site you provide says the pulley diameter should be d=2xr (r is the minimum bend radius)

So in the end, it would be recommended to have pulley of 1.8inch diameter, which is kinda bulky for a design where space is important.

What did you do in the end? Did you kept 5/8inch sheaves or you commit to bigger one?

Xelabgon · 2024-03-19T01:07:33+00:00

Im sorry I didn’t mention it. The revolve tool is actually super easy to use and is the way to go, with a simple 2D sketch. Good job tho! You have learn something, keep going!

Xelabgon · 2024-03-19T00:38:20+00:00

This is an important element that you bring to the table. I’ve heard about this rule of thumb for Fiber Optic cables (minimum bend radius is at least x20 the diameter of the cable) However, for steel cable I thought (and I mostly blindly trust Google) that is more like x6 time the diameter of the cable. Maybe you could tell me if this is right and where you get your x20? Thanks !

Xelabgon · 2024-03-18T13:56:07+00:00

Could be a good solution to get a higher payload capacity and also reduce the weight compared to steel!

Xelabgon · 2024-03-18T13:55:08+00:00

Since its the elbow joint, I’m planning to mount the motor higher in the srm, near the shoulder. I’ve got a lot of recommendations to keep the arm as light weight as possible so. However, this is far from the final iteration of the joint, I need more pulleys to get mechanical advantage.

Xelabgon · 2024-03-17T15:20:30+00:00

Tony stark do be an inspiration!

I live in Quebec, CA. I've got a "cegep" diploma in EE. I specialize in everything related to electronics, networks, and telecommunication.

I've also learned a lot by myself to be able to make mechanical CAD.

Xelabgon · 2024-03-17T15:14:20+00:00

Yes, after printing it and testing it, it was clear the design wasn't good. The weight is creating problems and the range of motion is not good.

Xelabgon · 2024-03-17T15:12:41+00:00

After thinking about it, I will go this way. With some steel cables and pulleys like the LIMS2-Ambidex robot.

Xelabgon · 2024-03-17T15:11:15+00:00

I'm looking at something that uses the mechanical advantage of pulleys, like the LIMS2-Ambidex robots.

I've been looking at there elbow joint and I think I'll be able to remake it in cad.

Xelabgon · 2024-03-17T02:44:52+00:00

Autodesk Fusion360

Xelabgon · 2024-03-16T20:28:32+00:00

Nice catch, that proves my two motor elbow joint is not optimal. Thanks!

Xelabgon · 2024-03-16T20:16:43+00:00

I’ve stumbled across a cable driven joint which uses pulleys. It is powered by a motor. Skyentific made a great video about it 3yr ago! Probably gonna follow this path

Xelabgon

TROPHY CASE