I'M Going To Build An Inmoov, Any Advice?
Hello, Synthiam community!
I'm going to need your help. I would like to build an inMoov for the first time. I want to take full advantage of the new Quest VR skill that can control the individual fingers of a robot.
I do have experience with building the head and shoulder servos, and a bit of experience operating it. Oh yes, and I have helped build a base for the upper body. Otherwise, I am a clean slate.
I'll be using all the EZ-Robot parts that I can. I will power it from a 5V 20A power supply as I've done in the past (with the super cap mod). I may design an external power board. I like the idea of including pins and switches.
I will be using EZ-Robot prototype high-torque servos any place a HS805BB servo is needed. I might replace some with EZ-Robot HDD servos if they can handle the job, as they are pretty torquey themselves (maybe the neck).
1. I have a head printed already, should I continue going from the head down to the stomach?
2. Should I print the legs or is it a waste of time at this point since they aren't functional yet.
3. Am I ok using PLA, or should I really get into the PETG game? Or PLA+?
4. I read that 30% infill should be used, is this right or should I go thicker/thinner in some places?
5. Should I use 2 shells when printing or is 3 or 4 better?
6. What are good methods for propping up the inMoov during the process.
7. What type of lubricant is best for the worm gears? White lithium grease?
8. What are some of the biggest challenges I'll face? Are the hands quite difficult?
9. Do you recommend a particular Youtuber or inMoov build page?
Thanks in advance for any advice you can give!
hi roborad
thanks for the compliment . am just an hobby printer guy .
.
Nomad do you have a link to flex hands build doc. My inmoov hand was terrible. I found this video is this it ?
https://m.youtube.com/watch?v=n_7N_fpTs0g
hi nick
this is the video . the palm is PLA and fingers are flex . i see here a picture no assemble build doc . some video's . there are 4 diff pose of the thumb .
pictures
gear mod.stl
here the connect block for the hand to the wrist . you can turn the block 180 if you want . also it has a higher gear . sofar i have only the palm , and block .
Nomad 6R, I love the plate you created. I looked at the Flexy-Hand for my build but I don't like the fact fingers don't fully close. So I have been looking at the following two hands as a starting point of a redesign for my build.
Parloma Hand v1.0 beta 2
This hand is able to support the most gestures of everything I looked at and is designed to work with Inmoov it adds three more micro servos to each hand.Or HANDi Hand Project where I have access to all the development files on GitHub https://github.com/blincdev/HANDi-Hand#handi-hand
The biggest issue with this design is the servos (HITEC HS 35-HD) used in this design are no longer made so it needs to be modified to support HITEC HS 40 nano servo's that are slightly bigger. Based on my first test I think they will work. what is cool about this hand is it uses zip ties connected to the servos to open and close the fingers and thumb. The other nice thing is it puts everything in the hand and it is also designed for presser sensors in the fingers tips.
Here is the HS-40's in the hand you can see the difference in size the orange servo was the original HS-35HD that they don't make anymore. All the stand off's need to be changed to support the new servo size.
If I use this I will be making the design a lot less complex.
I would love to here your comments.
smiller29
i see two potentional flaws in the top design . the wires have to very smooth to be able , to let the fingers return to there base pose .
Yes but in every finger there is a 3mm x 45mm .3 spring that returns the fingers to the home position. The tubing should help in those pinch areas. But this is in the design phase so anything can happen. Once I build it I may find it to complex or not. But the way I look at it is the Inmoov can't walk so I want to try and give it everything I can to allow it to express itself and the hands are a big part of that.
I would also like to get rid of the wrist rotating and make the forearm rotate below the elbow buy moving the servos into the hand it allows me to develop a way to make the forearm rotate. But this is why the forearms and hands will be the last thing that gets added to my build.
But please continue to point things out because all comments are helpful.
you can see the design from wowwee the robosapien v2 hands . they have little springs on the side of the fingers . you can use tinkercad for pracktise 3d its very simpel to use .
Yes I use TinkerCad now and love it for doing simple stuff but I have been trying to learn FreeCad and Fusion 360. I am loving this hobby so far because it forces you to learn so many different skills.
My big problem is time LOL.
So if anyone out here know Fusion 360 and wants to help me please reach out!