2nd Inmoov build - An "Ultimate Inmoov"?

[Chuck Fletcher]

Hi All,

I built an inmoov in 2014 for they NY world makerfaire, and have been away from this project for a while.

I'm interested in building an "Ultimate Inmoov" with all of the latest improvements, for example Steppers instead of the BB mega servos. 

I don't think many variants have made it "back to core" so I'm curious which of these are worth implementing, if any.

My goals - Super fast and super light. 

I have a new Taz 6 and hoping get my inmoov arms as light and strong as possible to improve speed and smoothness.

Any recommendations on approaches? I'm thinking about carbon fiber filament (printed with a light infill but using the Taz moar extruder for strength) for inner core parts and maybe Polycarbonate for surface parts with a very low infill.

I'm interested in high speed servos to get as fast an action on the fingers as I can. Also for eyes, etc. Thinking maybe Savox....

I'm also thinking about sub surface neopixels around the robot. 

Part price isn't a huge concern. 

Would love the lists input. 

Thanks,

Chuck

built Twitch for 2014 World Maker Faire

[gael langevin]

Hello Chuck, its been a while indeed!!

I m currently building my third InMoov, using only servo than can run on 7.4V in order to speed up the robot.

The savox are a good choice for that matter.

Steppers are heavy, I don't think its a good choice for InMoov.

Look for Bob Huston neck modification, its a must have.
https://www.thingiverse.com/thing:845793

Its also implemented in the inmoov-develop of MyRobotLab which has greatly impoved since 2014.
Many features are now just a matter of plug and play. Using the configuration fliles.

• Great voice recognition.

• Many voices available and gender

• Complex AI and learning chatbot

• Face recognition and face tracking

• Kinect to teach gestures to the robot

• Neopixel for gesture mode and mood selection

• Virtual InMoov integrated

• PIR sensor
  

and more to come with machine learning using DL4J and cloud sharing knowledge
http://inmoov.fr/how-to-start-myrobotlab/.

Gael Langevin

Creator of InMoov

InMoov Robot

@inmoov

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[Chuck Fletcher]

Ok - makes sense about the steppers.  Was curious what you or the list thought about specific filaments and how to minimize weight of the arms.

Twitch was built with pla which forced me to increase infill and lead to overly heavy parts which in turn burned out the mega servos...

I'd like to go the other way and minimized weight in the arms.

Chuck

Sent from my iPhone

[Ray Edgley]

I've been running PLA in Fred and haven't had to increase the infill for it.

Prints have turned out OK so far.....

Only problems I've had so far are caused by the printer failing not the strength of the PLA.

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[RobotGuy6]

Use a modified PLA like eSun PLA+ ... I can print with 20% infill and parts are stronger than 65% regular abs infill parts. It is not brittle like regular PLA with several times the impact strength over regular ABS... Also you can solvent weld the parts using PVC cement.... I use a combination of eSun's PLA+ and eSun's ABS+ in my inMoov builds... Both are fantastic high quality filaments...

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[Perry S]

Bob Houston has also recently published a hand design that uses flexible joints. You may want to look into that. It looks pretty good.

IT would be interesting to see some cosmetic changes. All of our Inmoov's pretty much look the same. Maybe one that is natively female would be good. My bot needs to meet a gal anyway. Since you say money is not a problem you could even hire a good designer to make it look really good.

Things I see on inmoovs that I feel could use some improvents

• hands and fingers - most seem to not return to original position,, the wrist rotation screws with the positioning as well
• Lots of gaps in the head. Combine parts before printing to make them look better.
• Wire routing - mine is a rats nest at times. Would be cool to see an entirely internal system for wire routing.
• Maybe a different aw mechanism. Many struggle with this.

Just some random musings

[Kyle Stevens]

Look into PETG. It has  the strength of ABS and the ease of printing of PLA.  It's all I use anymore.

Kyle

[Chuck Fletcher]

Thanks for all of the input.

Locking in on eSun PETG as my filament of choice - cheap and awesome as per all of your reviews.

Definitely going to implement the Bhouston neck and flexy fingers. 

Also bought one of the Savox SV-1271SG High Voltage servos to test before I order a full set. They aren't cheap but they seem awesome. This model seems like the best speed to torque ratio. 

Will keep people updated as I start this build.

Chuck

On Tuesday, July 18, 2017 at 11:37:50 AM UTC-4, Chuck Fletcher wrote: