Great, infill 90% surely will give it enough strength

Really Fantastic, I’m “hands on it” , and ready to upgrade my inmoov’s right hand

That is awesome. No tensioning spring is the best feature! I guess you could add a tension spring like you had in your single finger tutorial.
I think this is pretty innovative which begs the question what does the rest of your bot look like?

Very nice Marten!
It’s very interesting to see how you managed the wrist servo, I guess we could add a second servo for wrist abduction. That would be a great extra feature. (Hand Mini breakout Nervo Boards and Nervo boards would need to be transformed and all scripts and gestures as well though…)
Will you test it running continuously full 10…[Read more]

Very nice work. I’m waiting to see the fingers and wrist working together. Fantastic

Nice, now it works

I wish that works, it’s a great Idea

Hello Marten. I came to that exact same conclusion last night while assembling my tendons. They have been very finicky and I am not confident the spring system will hold up. The wrist rotation really plays with the tensions and geometries. I was thinking of a system where the lines ran through the centerline of the wrist. The servo can be moved…[Read more]

Awesome Marten… going to try these servo pulleys with my new inMoov I am currently building… good work man…

Great Marten! I want to see when the pulley is set in the servo bed how the servos are acting. As I said in our email exchange, I have burned so many MG996 and MG995, that I do not trust those servos anymore. I never, yet burned a HK15298.
Initially when I created the pulley and the servo bed it was for to solve a restriction rotation of 90…[Read more]

Looks great. Exciting. what pulley designs are you using?

They may save weight but they may not be strong enough for the inMoov hand… The hand is not the same as the finger starter. There is a lot more friction on the push/pull finger mechanisms. The servos need to work much harder than the simple finger kit… However, let us know if they work because less weigh is always welcome…

I will use your idea in my Inmoov Rigth Hamd

I want to test these pulleys for sure! I’m guessing it will be also okay for our servos HK 15298 which have a restriction from 0 to 90 degrees.

Wouuii video great Martens.Did you use your carbon filament?

Very cool Marten! Once the finger is assembled, a little video will be nice to see!

when trying to reduce the forarms weight – did you experiment with getting less weight from the printed parts too? Just had a chance to look at a fiber enforced part at an exhibition. It had a thin layer of fiber on top and bottom of the part (needs 2 extruders) but showed impressing strenght.

Proof-of-concept for adding force control/feedback to Servos using the InMoov Finger Starter.

Modified the kit to accept an FSR. The servo is modified and mounted that it can slide a bit in the direction of force. As the finger tightens, it forces the servo case against the FSR, which is then read. Basic force control written in Arduino as proof…[Read more]

simply fantastic! Looks very responsive. Will you share more details about it and the code to run it? As you say it’s controlled by the arduino some more cables to route to the hand or are you thinking about a separate nano controlling each hand?

Great project Alan!!
As mentionned Joel had done a great research on the hall effect sensors. The FSR are not very responsive unless pressure is applied. How did you manage to fix the two kapton copper wiring? Won’t they brake/tear after long term running?

I hadn’t seen this, but there’s a guy out there by the name of Clement Vella who has also worked out a solution using FSRs, not sure if they’re hand made or not, but he a sensor for each direction of force and integrated it into the pulley.

His video also confirms one of my questions, that maybe applying PID to the control code may work better…[Read more]

Hey Marten, that seems like a great modification. I have a question if you have a moment, since you designed the nerv boards. I have one servo (Rt arm omoplate), which when connected to the nervo board, gets hot and eventually burns when connected to the nervo board. The servo works just fine on a tester etc. I have seen in the tutorial, the…[Read more]

Hello Marten,
Very nice module for a Finger Starter!!!
There is no doubt that the servo of 2,5kg will work because even a small SG92R works. With the Finger Starter there isn’t much friction. But such servo will burn for sure if used in the hand. The friction is far greater in many ways in the hand, that is the reason even a MG996 of 12kg Torque…[Read more]

Hey Marten!
Great pictures, I hope the mini makerfaire was a lot of fun!!

Hi Alan
Looks great, congrats!
Are you using combined stl’s for the movable parts? I had startet to build them but it’s a lot of work and so far it’s by far not finished.
Played around with kinetics (did you see my “look at hand”) but my math background it rather week and I am not really able to follow e.g. the stanford university lessons with…[Read more]

PS: removal of the slurry ABS on the glass after print is done, simply run under cold water tab and it will detach itself like magic. Dry the glass plate and you are ready to go again.

Hi Gael – great info thank you.what is the consistency of the ABS slurry you use. your prints are look great.

Hi Gael
I still think you should give HT-PLA a try and use a print plate that will not need any slurry or tape and allows to remove items by just picking them up from the cooled out print bed!

i am making inmoov right hand so can i get the Tensioner.stl file for it please i am not getting it anywhere can you please provide me the link of it

wouaaa it is hotttt lol
amazing

Uhh, Uhh, my printer manufacturer had changed his print bed product line to make it almost impossible to overheat it (you could fiddle with the control SW however).
I assume some workshops could run into serious problems having the printbed burning through.
Think about switching to PLA-HT (or HT-PLA) which is as good as ABS but prints on a 50…[Read more]

Sorry but can you point out where you remix? i saw it’s the same with origin one?

Has anyone considered how much weight is being carried by the tiny little screw down the centre of the servo drive shaft that holds the horn onto the shaft? How big is on those servos, 1.5-2mm, 3 maybe?

This is awesome! The 2 topmouth pieces have always been kind of a pain to work with, so that will help alot.

Ahhh, great, I had started to add flabs n stuff to keep them from falling apart.

Thanks Gael, now I see how it all works. I like how you can detach the drive wheel to push it around manually. See my comments on Sebastiens’s post.

@Bob, to answer your previous questions on Sebastien’s post:
The base can carry InMoov easily. You can add at least 10kg and the base can still ride fine as long as the floor is flat.
When I use InMoov in the street, the wheels can overcome some holes if it rides full speed. If you look at my video, you can see a battery carrier between the two…[Read more]

It is nice to see young people working on things like this.

Thank you very much, was waiting for him, it was what I needed.

thank you gael

Thanks very much Gael!

Awesome Gael and thanks for the files and the tutorial.

OOOhhhh Yes,

This is very good news Gael 🙂
I will soon start printing the head, so your update is just on time 😉

This week I will receive my new _XT filament from ColorFabb.
I hope it’s a good filament to use for most InMoov parts, even for the shoulder mechanical parts.

Other question about the camera, are you still happy with your…[Read more]

Woooii cool

Cool and sure, MRL deserved it to get placed at the shoulders from InMoov.

Awesome!
I have added it in collection of derivatives.

Woouuiii !
Nice prints! Well now the forarm and you just about ready to have a Right hand!

@ Bob Houston,

This looks awesome dude, great work and a cool upgrade to the InMoov !

I can’t wait to see some more video’s with the Eye tracking options 🙂

bonjour tout le monde!
est ce que bob Houston pourrait faire partager a la communauté inmoov les plans et les fichiers stl de son châssis et la colonne sur roue qu’on voit sur la vidéo youtube?
merci d’avance

Nice!
So the white is the elastic cord and it runs all the way to the end of the finger, if I juge the white spot at finger tip.
What kind of elastic cord? Don’t you think it will stretch more and more over time?
I also can see the asymetric effect on the black braided line.

Interesting design! I like the idea to set the servo horn within the pulley. They might be a bit too thick to fit under arm covers though… Let us know.

Hi Marten
I think before changing the pullies we should agree what the mechanical requirements are for the fingers.
In my arms I use mg996R and they can turn about 110 deg to the left and to the right (total 220). So when Gael says he can move all fingers with the exception of the middle one with an unmodified HK15298 servo which allows only 45…[Read more]

Hi Marten,
Nice work!
Did you post it on Thingiverse?
There is other derivatives there:
http://www.thingiverse.com/thing:1036300
http://www.thingiverse.com/thing:618449

Sorry for posting so fast Just got excited when I saw the pictures from your trip you posted, when do you think you will release them?

That is a really nice back. Looks good and will protect all the electronics and hide some of the servos.

Here the Arduino code, which has a servo slow function included:

#include

Servo myservo; // create servo object to control a servo

int potpin = 0; // analog pin used to connect the potentiometer
int val; // variable to read the value from the analog pin
int Pos;

void setup()
{
myservo.attach(9); // attaches the servo on pin 9…[Read more]

Hey nice Marten!!
I like that Carbon PLA. I remember the parts you showed me in Eindhoven, the quality was very good!
Pulley rotates 90 degrees because the HK15298B digital servo recommended for the hand rotates only 90 degrees.
That being said, you can use any servo you like with Finger Starter and of course model your own pulleys. 🙂

Hey looks great. Many, many more parts to print however …
I give a filing to the finger parts where they move against each other because the printing in layers creates imperfect vertical surfaces.
I do not want your pieces get broken but does it feel like the you might brake the parts when assembling them? I broke several with PLA and ABS when…[Read more]

Great prints Marten!
In the video posted by Sebastien, the idea is great! Specially if you drilled the holes a bit too wide.
But be sure that finger stays loose, in the video they are stiff, rigid, and that is not okay for the movement. The finger should move freely at each joint.

Woouiii you are going to make wonders with that printer!
You should have told me when we were in Eindhoven that you wanted to build the hand to make some tests with the hall sensor, I could have brought you one that I keep for my robot in case it breaks.
Yeah, print first the finger starter it will be easier. Let me know for the finger tip design…[Read more]

Really cool!

I hope and i pray that our Inmoov will get legs!!!

Inmoov looks like something from Outer Limits.

Many will need to print, but the robot will go 🙂

Sooner or later, someone will make…

Have you already tried this ? If so, what kind of spring do you use, and where to buy it ? 🙂 (ok, I’m lazy 😉 )

I’m not really into site programming but when you go to activity the bar on the right is not needed any more. if this is removed you might have more room for the videos.

for the comments, Im looking almost every day to see what others are making.
the comments are sometimes low but I think lots of people are watching.

I also found it a bit difficult to navigate the site. I just kept punching around until it functions as it should.
I would also agree with dumping the update stream on the right side but leave the members activity button.

I have found that by using “copy and paste” into the text box is the easiest way to post You Tube videos. It is unfortunate that they are cut in half but by clicking on the name of who posted it, it takes you to the video. I too think that a lot of people look at the site but everyone leaves comments. I know I don’t comment on everything but I…[Read more]

Hello! And thanks for welcoming me. I started my inmoov approximate 2 month ago

yeee