@TamasLaszloffy777

Hello, guys!

Hopefully, it’ll be my last devlog about 3D modelling, and next time, I’ll build R2 in real life with my dear fellows, @benedekkristof16 and @hunorkiss04 .

I’ve spent hours and hours designing with varying degrees of success and from this mighty point, R2 probably has a much cooler look and far more aura than me🥀.

Unfortunatelly, this replica is NOT 100% accurate and I had to model some elements by sight (R2’s holoprojector) and I horribly miscalculated a ratio: R2’s main body (the cylinder) is 220mm and it should have been 200mm. I noticed it too late. Due to the complexity of R2’s torso and the lack of time, I didn’t correct this. It’s not that visible; however I had to let go of the two center foot cylinder due to a lack of space.

But it’s our R2, so We’ll keep him, no matter what 😉.

Hello, guys!
3D printing has started, and I designed some important details for R2’s body: the Radar Eye, Shoulder and Battery box. Currently, I’m making the Leg Booster.
I still have to model the Ankle Cylinders and a few remaining details for R2’s dome.

Hello guys!
I’ve finally finished (almost) R2’s modeling, and I’ve successfully done the hardest part of the project: the decorative panels and holes on the dome.

I used plane splitting and surface projection tricks to get perfect panel lines all around the dome to avoid distortion on the spherical surface.

All that’s left now is modeling an internal mount for a small IR sensor, and the dome is ready for printing. I’ll design the rest of the decorative elements, such as R2’s eyes and shoulder rings.

Hello, guys!
The progress has been huge, and here is a quick list of what I’ve done recently:
-I’ve modeled a custom lazy susan bearing for R2’s head that runs on 6mm BBs
-The motor mount fot the 28BYJ-48 stepper motor is basically ready and it’s attachable to R2’s torso.
-I also made the head-turning system with a huge internal gear.

I still need to do some tuning; however it’s time for R2 to come alive. The 3D printing will probably take a couple of hours (or days).
Stay tuned!

Hello, guys! I’m back with a huge update!

Recently, I’ve been working on finalizing R2’s legs and shoulder attachment, and it’s looking far better than expected! It’s finally starting to look truly recognizable.

It wasn’t a smooth process, though-I ran into quite a few problems with component positioning and broken external links between files. Fixing lost references took a lot of patience and effort, but figuring out the correct 18° body tilt and getting the shoulder alignment right made all the headaches worth it.

Basically it’s done; however, I still haven’t figured out how to make the center wheel. I hope I’ll find the right way. Maybe I’ll have to use LEGO wheel…

I’m here again and I’ve just tried to finish the main leg. It’s still missing a few decorative elements.

Next I will make the shoulder attachment and after that, it’s time for R2’s head!

This time, I tackled the main ankle block, and it’s done, and also wrapped up the design for the decorative side panels on the center foot assembly.

To keep maintenance easy and avoid visible screw holes, I separated the decorative panels and designed small pockets for 5x2mm neodymium magnets that perfectly fit into the hole.

It’s been over a week since the last update; however, don’t let the silence fool you! 😉 In the latest grinding, I worked almost entirely on the most critical piece: the main foot. Anyone who has ever designed a functioning mechanical foot knows exactly the pain and agony, that turning a solid block into a precise assembly is a total survival trip (maybe it’s just skill issue🥀), but I’m so proud that I’ve made it so far! The perfect wheel connection is ready, and the JGA25-370’s motor mount has found its home. Even those printer-killing, razor-sharp internal overhangs got tamed with clean chamfers and fillets. R2 will be proud of our team!

Today I wrote the prototype of the code, which will control the motion of R2D2. The original version will control it wirelessly, along with the sounds and ligths, but this controls only the motors yet, via a microUSB cable. I wrote it in VSCode, and I will only copy it to Thonny (which i’ll be using for the Pico) when it is fully completed. I took the help of Gemini, to explain me how to control it (the robot, eventually) using my keyboard, and with the final debugging. I also watched Electro Nerds Academy’s youtube video in the process, which explains how to control the TB6612FNG motor driver with Arduino, and C++, I did this to make sure I understand the process. I still have a lot to learn, but slowly and surely, R2 will roll!

Hello, guys! It has been long since my last devlog, so let me break it down for y’all: -I’ve been working on the main cylinder for 8 hours (not straight) and I can finally say: It’s basicly done! -I modeled the cylinder with the body frame, and it became brutally strong (I hope it won’t brake in my hands). -I also made the internal shoulder mounts for the legs. They are perfectly integrated into the inner frame, making sure that this won’t fall apart! -To finish off this massive update, I spent quite some time sketching out all the crucial decorative panels, using a reference canvas. I’m as keen as mustard to finish and see something come to life!

Hello, guys! What I’ve achieved this past week is not as impressive as I’ve hoped: It’s been a packed week of modeling and geometry solving. I have successfully brought together several crucial assemblies into the main project: 1. Raspberry Pi Pico Frame 2. R2-D2 Center Foot: Completed the primary structural foot base 3. Center Ankle and Shroud Connection: After battling some complex 3D curved geometry, the ankle block is ready! Next steps: The next phase will be refining the joints and I will start the main cylinder!

I spent today working on the main ankle. The biggest hurdle was the curved outer plate. The blueprint is a bit confusing. Trying to accurately wrap and cut this 2D pattern onto the 3D curved ankle part in Fusion 360 turned out to be a real geometry headache. The main ankle structure is about 90% complete. As soon as I figure it out how to do this properly, this section will be ready (hopefully by tomorrow).

Another success! Today, I made sure that R2 won’t lose his leg during his first test drive: I finished the internal pass-through screw system. On one side, the screw head sits inside a deeper hole so it stays hidden under the panel. On the other side, I cut a perfect 6-sided hexagon shape. A real metal nut will sit inside this pocket, so when I tighten the screw, it will hold the leg perfectly, without breaking the plastic (at least, I hope 😜). I’ve started the ankle, making it 9,6 mm wide because the slot is 9.89 mm. This leaves a tiny gap both sides. I also imported the blueprint image to Fusion, scaled to the right size. Finally the project is coming together!

Today, I finally managed to model the most sweat-inducing parts of the R2-D2 foot, and after a few near-rage-quit moments, I made some step forward. The biggest headache was definitely wrestling that weird decorative trim on the side of the foot. After that, I had to start with the ankle attachment. Since this joint carries our little friend’s (R2’s) weight, it had to be built like a tank. I modeled a standard M6 socket screw. I hope it’ll be solid as rock! Next mission: figuring out how to hide this outer screw hole to keep things completely accurate, and I’ll model the center ankle!

Today, I was still practicing Micropython, and connecting circuits in Wokwi’s Raspberry Pi Pico simulator, with the help of the “Get Started with MicroPython on Raspberry Pi Pico” book. I’m still waiting for the delivery, so I can’t do it physically yet, but I think it’s still a great way to learn, and it even lacks the risk of frying anything. I succesfully made an LED blink, and connected a four-legged push button to the Pico. The final “project” of this session was building a circuit, so when you push the button, the LED lights up. I had a little problem with this, so I took the help of Gemini, and we figured out, that I accidentally connected the button to the Pico’s 3V3 EN pin, instead of the 3V3 pin, and I had a missing colon in the code. After fixing, it worked beautifully

Progress was slow AGAIN, that stubborn “Half Moon” side arc was completely annoying and refused to cooperate within the time limit. I didn’t let the session go to waste. Instead, I successfully cut out the main socket/connection point for the future leg. One step at a time!

Today, I started to learn micropython for the Raspberry pi Pico WH, which I will use for my team’s R2D2 model. I do not have one yet, im currently waiting for the delivery :) , but I used Wokwi’s Raspberry pi Pico simulator, and the PDF micropython tutorial book, which I found on the original Raspberry Pi website. (well, not exactly there, because it showed me error 404, but I found it on Internet Archives, it’s title is “Get Started with MicroPython on Raspberry Pi Pico”). With the help of these, I learned how to import libraries in micropython, and how to turn on the Pico’s onboard LED. I even programmed it to stay on for a certain amount of seconds. I also used VS Code to try out some basic python loops.

I’m working on a R2D2 model with my friends and I got the 3d modeling part for our project just like my teammate Tamás . I’m not completely new at this but it took a lot of time to learn the usage of Fusion 360 and the tricks which will help me to make the best parts for 3d printing . I’m in a learning phase yet, but I hope I can get started to work on the real project . I did this simple pencil model and I did some experimenting with my initial and so on. I think I will enjoy very much this work because the variations that you can create to assemble a 3d printed model is very large. I used a base tutorial from youtube of course in the beginning ,but I hope I will improve and will be able to make my own ideas completely alone without tutorial help. He is Tamás @TamasLaszloffy777

Progress was way better today! I finally managed to tame the geometry of R2-D2’s center foot after some intense mathematical gymnastics! So, with the offset lines and blueprints, and the main body is basically done. There are still decorative panels which are waiting for modeling. The next step is to flip this thing over and design a customized frame for a caster wheel. R2 will be happy, rolling around the house!

Progress was slow today (again), but I started working on a completely new component: the center foot. Though, it was hard, with limited time, I really enjoyed the process. I hope I will be more efficient.