Go Down

Topic: uArm??An open source robot arm (Read 95794 times) previous topic - next topic

OldSalt1945

Just an observation.
Once they set up kickstart, we haven't heard a peep from UFactory/UArm.

Haven't gotten any progress report from  JimboZA, either.

I'm real interested, but suddenly the buzz has gone silent.

Whats up?          John
Always keep the shower curtain INSIDE the tub.

zoomkat

Quote
Whats up?


Perhaps they are now going to sell the Chinese design.
Google forum search: Use Google Search box in upper right side of this page.
Why I like my 2005 Rio Yellow Honda S2000  https://www.youtube.com/watch?v=pWjMvrkUqX0

keeper63@cox.net


The arm itself appears to be a Chinese design, so not sure where the plans would be found.


They sent the plans (well, DWG file for a laser cutter) to me and Jimbo; I don't know what else Jimbo received, but I also got a part list and assembly diagrams.

So - if this thing goes south on everybody, know that the plans do exist - I'm not releasing them, though, so don't bother to ask me - not yet, anyhow.

I wasn't able to participate in the KS campaign (I wanted to, but then I lost my job - thankfully I started new employment today); let's give them time and see what happens - I'll try to email the contact I have and see what if any response I get.

I'll update this thread depending on what I hear...
I will not respond to Arduino help PM's from random forum users; if you have such a question, start a new topic thread.

Chagrin

The uFactory web site has an update from this month that shows they've been optimizing the design. Their schedule to start shipping is May 1st. I don't see any need to worry about them not meeting their stated goals; it takes time to develop and collect all of the documentation and they're not going to do that if the design is still in flux.

I'll agree it's certainly not "open source" by the Richard Stallman definition; if it was then all of their docs would already be online. They're obviously trying to make a commercial go of it and assumedly don't want anyone beating them to the punch. In Shenzhen the nearest opportunistic cloner is probably next door ;)

As an aside, this just popped up on Thingiverse: http://www.thingiverse.com/thing:280263


OldSalt1945

#79
Mar 25, 2014, 04:55 am Last Edit: Mar 25, 2014, 04:58 am by OldSalt1945 Reason: 1
UPDATE;  while I was composing my epistle, there were additional posts.  Makes some of what I said redundant.

So, the open source thing only covered the two of you guys?  

I thought the purpose of open source was to get many folks in the community to experiment with a design and, perhaps develop improvements, software enhancements, enlargements, miniaturization , etc.  I noticed that the design is a bit wobbly when a side load is applied.  I have structural and acrylic skills that could offer some mitigation of that problem.  I could easily fashion all the parts from sheet acrylic and a bandsaw.  The only critical parts of the build are the pivot point placement.  That would require match-drilling the 2 sides of each arm segment with brad-point drill bits.  But, alas, the open source plans are a secret.  Pity.

Did JimboZA ever get his project finished and working? Haven't heard from JimboZA  since Feb 2, 2014 about his build.  He went for some screws and never came back.

Did you, cr0sh, ever do anything with your drawings?  

This is turning out to be a very closely held open source project, to my way of thinking.

Just saying.

I considered springing for the $69 acrylic kit, but I've watched too many startups go belly-up  when the project leaders suddenly find themselves "cash-rich" and start buying new cars rather than putting it into materials to cover promised merchandise.  

I'm retired and on a limited budget.  If I get too wild with this new hobby, my wife ---- well just let me say that her favorite saying is "The quickest way to a man's heart is through his chest, with a sharp knife".

John
Always keep the shower curtain INSIDE the tub.

zoomkat

#80
Mar 25, 2014, 05:43 am Last Edit: Mar 25, 2014, 05:45 am by zoomkat Reason: 1
A quick Google search that a "Palletizing Robot" has been around for some time. The below ebay offering is interesting.

http://www.ebay.com/itm/Axis-palletizing-robot-manipulator-model-with-no-arduino-servo-control-board-/271275924586?_trksid=p2054897.l4275

https://www.google.com/search?as_q=Palletizing+Robot+&as_epq=&as_oq=&as_eq=&as_nlo=&as_nhi=&lr=&cr=&as_qdr=all&as_sitesearch=&as_occt=any&safe=images&tbs=&as_filetype=&as_rights=
Google forum search: Use Google Search box in upper right side of this page.
Why I like my 2005 Rio Yellow Honda S2000  https://www.youtube.com/watch?v=pWjMvrkUqX0

OldSalt1945



As an aside, this just popped up on Thingiverse: http://www.thingiverse.com/thing:280263


I looked this over and it's about the same thing, but uses Nema 17 steppers.

There is no PDF, but he does supply DFX files.  Sketchup will import them, and export PDF files. 

Problem is, I can't figure out how to display them in 2D with blueprint-like dimensions.  Does anyone know how?

John
Always keep the shower curtain INSIDE the tub.

teocreo

is open source ?? ok,write the link to the arduino file and draw of parts!!
all we know the world of 3d printer,that is open source and inside that we look all file and all draw,here no...for me the uarm isn't a open source project !!

zoomkat

The ebay arm and the below arm definitely look to be the same type arms (identical cut out patterns). If the ebay arm comes with servos ready to run, the price seems reasonable. 


www.youtube.com/watch?v=PX0raMFnz8A
Google forum search: Use Google Search box in upper right side of this page.
Why I like my 2005 Rio Yellow Honda S2000  https://www.youtube.com/watch?v=pWjMvrkUqX0

keeper63@cox.net


Did you, cr0sh, ever do anything with your drawings?  


No - unfortunately I haven't.

While I have access to a laser cutter (via my local TechShop) - and I believe I have the proper acrylic for the parts, I was still looking to source the rest of the components (bearings, screws, etc). I was also somewhat hampered by some surgery I had earlier this year (thus, paying that ridiculous expense off first). Then, on Feb 6th, I was laid off my job.

I only recently got new employment (started yesterday) - but those expenses are still there, plus the expenses incurred during my "vacation" (read: repaying my savings). So for now, the uArm appears to be on hold for me for the time being...
I will not respond to Arduino help PM's from random forum users; if you have such a question, start a new topic thread.

keeper63@cox.net


A quick Google search that a "Palletizing Robot" has been around for some time. The below ebay offering is interesting.


Well - uArm/uFactory never said their design was "new"; they said they based it off an existing full-sized robot arm.

However, with that posting of the ebay arm, and the video - now you have me wondering which is what?

Did someone copy uArm (easy enough to do, I would imagine)? Did uArm's plans get "stolen" or somehow lended out (I know I didn't post them anywhere, and I trust that Jimbo didn't, either)? Or did uArm get the plans from somewhere else, pass them off (or a refactored version) of them as their own (as first mover?) then create the kickstarter? Hopefully that's not the case...

Then again, that video dates long before uArm first posted. No clue on when the ebay arm was first offered...

I have yet to hear anything from uArm in a long while...

I will not respond to Arduino help PM's from random forum users; if you have such a question, start a new topic thread.

teocreo

Hi,for make my arm robot i have look the uarm and redraw the parts,i use only cad,no other program,im work on mecanicall factory for more year,that is my work  ;) .
im ipotize the measurements for an rapport of servo dimension,non more other particoular system..im not use bearing and not other system,my robot not have to work in a factory :-)    is only a desktop toy,im use a symply screw,that system not have a particoular and big number of parts,i use a wood as spacer,im use only a wood for all my robot,the other parts if aren't wood,are a screws,one big bearing of rotation and servos.
i have laser cut at home and if im look a problem of measurements of center of rotation,for me is symply recut only the parts modify....now im search a file to insert on arduino....the center of rotation of my robot are:
first arm 110mm  second 135mm.
is possible for you help me for run this little toy ??
thanks at lot

JimboZA

#87
Mar 26, 2014, 02:23 pm Last Edit: Mar 27, 2014, 07:19 am by JimboZA Reason: 1

(I know I didn't post them anywhere, and I trust that Jimbo didn't, either)


I said in an earlier post (Reply #45) that they weren't mine to distribute, when someone asked me to forward them, so No.


Haven't gotten any progress report from  JimboZA, either.


Progress report: I have stopped all Arduino / robotics activity.

Johannesburg hams call me: ZS6JMB on Highveld rep 145.7875 (-600 & 88.5 tone)
Dr Perry Cox: "Help me to help you, help me to help you...."
Your answer may already be here: https://forum.arduino.cc/index.php?topic=384198.0

zoomkat




As an aside, this just popped up on Thingiverse: http://www.thingiverse.com/thing:280263


I looked this over and it's about the same thing, but uses Nema 17 steppers.

There is no PDF, but he does supply DFX files.  Sketchup will import them, and export PDF files. 

Problem is, I can't figure out how to display them in 2D with blueprint-like dimensions.  Does anyone know how?

John


Good question. Not sure why DFX files are supposed to be so portable when it seems difficult to find applications that can open them. The below arm probably could be modified to use servos.

www.youtube.com/watch?v=y1-ZIk8nOSQ
Google forum search: Use Google Search box in upper right side of this page.
Why I like my 2005 Rio Yellow Honda S2000  https://www.youtube.com/watch?v=pWjMvrkUqX0

teocreo

Hi,im very happy but my first project with arduino run....
im use a 5 pot 10k for move 5 servo....
now i have more problem of disturb,but im thin is for the wire of any servo is twited,but is not important ....
im courious to know what your think of this project....
all parts are cut with my diy laser cut and mark with my diy laser marking with galvo head...
best regards

p.s. how is possible use the cinematic formulas and where is the correct system for insert on arduino ??


Go Up