hi jeremy

i would use PTEG for sure .there are alot of part withs it will make the body very heavy . i started with the waist and build up . i made a stand thats turneble .  the legs are just visual . i think a drive system is better .  here's the bottem part for using a bolt and nut . its more stable .

stand inmoov.stl

stand left.stl

stand right.stl

Hi Jeremie,  I'm very interested in your thread here. You've got some great questions and ideas. I'll be watching to see what is discussed.

I'm not an inMoov builder but they fascinate me and hope to build one or something like it one day. As a builder that has built a full sized robot I've noticed there are lots of similar issues in building and processes that can be adapted between these big robots. The inMoov builders have come up with some wonderful and amazing stuff that I really would love to incorporate into my big guy. I'm currently revamping my robot and most of the thoughts and questions you listed above are similar to my own. For example, I'd love to get into and learn the best ways to 3D print. It would be so nice to design needed parts and brackets instead of making my own out of metals and plastics.

Anyway, I doubt I can offer any better advice then the inMoov builders here will provide or that of your own skills. However I'll keep an eye on this discussion, learn and help if I see a way I'm needed. Have fun!!

OH! Wait!! What is this about a  EZ-Robot prototype high-torque servos any place a HS805BB servo? That opened up my eyes. I'd love to hear more about this new servo. How could it help to improve the current choices that you and other inMoov builders now use in their builds? Can you share a description and the specs? And of course, when will they be available to buy and use? Are you using your new inMoov build to test these prototype servos or to showcase them?

LOL, sorry, you got me excited there. There are so many new and wonderful things to see and touch!

hi jeremie/dave

here's an idea to move the robot .

@Nomad Thanks for the suggestions and the .STL files. I will start trying to use PETG. Any recommendations on brands or common temperature? I'll likely use a wheelchair base similar to what Synthiam has.

@Dave lol I can't say much about the new servos but they are digital, quiet, and have twice the torque of HS805BB servos. It's definitely exciting to have these! It will definitely help the inMoov community have inMoovs that aren't as loud and can allow the arms/shoulders to lift more weight. Yes, this build will be a part of showing what the servos can do, but the real goal is to control a humanoid robot remotely with VR. I hope to show the power of ARC with VR with a full scale humanoid.

I agree that there are a lot of common challenges when build full scale robots. I have definitely learned a bunch through your adventures. Power management is a big one and using multiple EZ-Bs in one design. I'm a novice when it comes to the larger designs. I like to think of you as the master builder so stick around this thread as I would love to learn more. Mechanical design, strength and weight become very important factors in large scale design, these aren't things I've had to worry too much about in the past.

@Anyone I forgot to ask what people use to fuse PETG together, any ideas? I'm hoping for a solvent or glue.

Jeremie,  This is great news I am also building a Inmoov robot (MRB1) currently and have my project posted on the site.  You may want to check it out when you have time.  By the way if you want any of the modes I have made let me know and I will send you the STL files.

1. I have a head printed already, should I continue going from the head down to the stomach?  I started from the head down and now I kinda of wished I started from the bottom up.

2. Should I print the legs or is it a waste of time at this point since they aren't functional yet? I printed mine already but I have not installed them yet.  Based on that I would say they are not needed until you feel you are ready for them.

3. Am I ok using PLA, or should I really get into the PETG game? Or PLA+?  PETG is the best way to go in my opinion.  I use PLA for the outer body plates.

4. I read that 30% infill should be used, is this right or should I go thicker/thinner in some places?  I use PrusaSlicer with 30% infill.

5. Should I use 2 shells when printing or is 3 or 4 better? I use a minimum of 3.

6. What are good methods for propping up the inMoov during the process. I just use my work bench but the STL files Nomad 6R provided look like they would work really well.  I think I may also use them.

7. What type of lubricant is best for the worm gears? White lithium grease?  Super Lube 92003 Silicone Lubricating Grease with PTFE, 3 oz Tube, Translucent White url=https://www.amazon.com/gp/product/B0081JE0OO/ref=ppx_yo_dt_b_asin_title_o08_s01?ie=UTF8&psc=1

8. What are some of the biggest challenges I'll face? Are the hands quite difficult?  Make sure your printers x,y,z axis are calibrated to make fitment of all your parts better.  Also look for things like this:    InMoov Shoulder Piston (PistonClaviV3) no filing or sanding needed InMoov TStoPistonRightV2 + LeftV2 (no sanding or filing required) As far as the hands go I am remixing and designing stuff to make new hands that can do more than the current ones.

9. Do you recommend a particular Youtuber or inMoov build page?  I have watched a bunch and they have helped a lot but at the same time some of them are dated so just keep that in mine when viewing them.

My Robot Buddy (MRB1) in development...

Sorry I didn’t get back to this message until now, got side tracked. Thank you very much for your detailed reply @smiller29 I appreciate the advice!

I was hoping you’d have some advice for me thanks for chiming in! I will definitely take any shortcuts or files you are willing to share.

I’m looking forward to your new hand design, sounds great!

Your MRB1 is looking sharp, excellent work!

@Jeremie, thanks for the very kind words. I think we all are learning from each other. That's what I love about groups like this!

I'm using EZ Robot's current HDD servo exclusively in the full sized B9 robot I just finished rebuilding for a friend. I love how strong and quiet they are. I was considering replacing the analog Hitch servos that I'm using in my personal B9 with the EZ Robot HDD servos, some of which are being used in gearboxes. However, with this new servo coming out I'm going to wait. Need a bata tester? LOL. .

I do have an off topic EZ Robot HDD servo issue I am having with the of servos located in the right wrist of the B9. I'm going to start a new thread about this soon so please don't follow up in this thread. I do not want to hijack your thread. However the issue is that It shakes back and forth when ARC sets it up through the INT script. Seems to be seeking the deadband. Only way to stop it is to release the servo or stop the shaking by hand. This is the second EZ Robot HDD servo I've had in this location as the first one had the same issue. Maybe it's my design. I just wanted to put the bug in your ear sense you are actively prototyping a new but similar servo. A programable deadband width would be great to have.

And @smiller29, Wow! you are a treasure box of useful and much needed info! Thanks for sharing!

@Jeremie, thanks for the very kind words.  I am sure as time goes on we will talk more I can't wait to see your progress.