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-   -   pic: VEX Mecanum Wheel/Tread (http://www.chiefdelphi.com/forums/showthread.php?t=97258)

Andrew Remmers 06-09-2011 21:46

pic: VEX Mecanum Wheel/Tread
 

MattC9 06-09-2011 21:48

Re: pic: VEX Mecanum Wheel/Tread
 
Hey have you seen 44's VEX mech.'s? they work great! http://www.youtube.com/watch?v=WS8P0ZnK7PA

Andrew Remmers 06-09-2011 22:51

Re: pic: VEX Mecanum Wheel/Tread
 
Yeah, 44 was one of the reasons we dropped the project, we saw them in person at worlds and were amazed and gave them credit for first HS vex legal mecanum. But another reason for doing this design was to make HS legal VEX omnitread, that ran on the concept of the mecanum wheel. Not sure if it would have worked very well but it was a cool idea and only wish it was more feasible to make...

- Andrew

sanddrag 07-09-2011 00:18

Re: pic: VEX Mecanum Wheel/Tread
 
Beautiful render. What was it done in?

Andrew Remmers 07-09-2011 00:22

Re: pic: VEX Mecanum Wheel/Tread
 
It was rendered in 3ds max on one of our members... er a super computers I guess you could call it!

- Andrew

msimon785 07-09-2011 01:03

Re: pic: VEX Mecanum Wheel/Tread
 
*quietly shies away ... xD
That render quality is INCREDIBLE. I am completely in awe. After looking at the full size picture, I was almost under the impression that this was a finished product, in tangible existence and completely tactile. It was not until I read further that my suspicions were put to rest.
Good Job. I believe you just inspired me to start a download of 3ds. I need to learn how to render actually photo-realistialy. That said, it'll take a lot of work to get to that skill level.
Wow. I am really in awe.

Akash Rastogi 07-09-2011 01:25

Re: pic: VEX Mecanum Wheel/Tread
 
Quote:

Originally Posted by msimon785 (Post 1076177)
*quietly shies away ... xD
That render quality is INCREDIBLE. I am completely in awe. After looking at the full size picture, I was almost under the impression that this was a finished product, in tangible existence and completely tactile. It was not until I read further that my suspicions were put to rest.
Good Job. I believe you just inspired me to start a download of 3ds. I need to learn how to render actually photo-realistialy. That said, it'll take a lot of work to get to that skill level.
Wow. I am really in awe.

Good design skills take work. Rendering, not too much skill as it is patience and having an eye for lighting and textures along with a solid computer/software package. (Trust me, I used to spend more time making something look good in a render than I used to spend on the actual design).

Andrew Remmers 07-09-2011 01:45

Re: pic: VEX Mecanum Wheel/Tread
 
Quote:

Originally Posted by msimon785 (Post 1076177)
*quietly shies away ... xD
That render quality is INCREDIBLE. I am completely in awe. After looking at the full size picture, I was almost under the impression that this was a finished product, in tangible existence and completely tactile. It was not until I read further that my suspicions were put to rest.
Good Job. I believe you just inspired me to start a download of 3ds. I need to learn how to render actually photo-realistialy. That said, it'll take a lot of work to get to that skill level.
Wow. I am really in awe.

Glad to do some inspiring! And there are more to come! Just have to be a little patient :p I will post here the render when the final robot is released :D

Believe me when I say this the render its self was not done on my personal computer (not enough power) Something this size would probably literally burn my computer. I am running about 5.2 Ghz of power with 8 gb of RAM, while the computer this was rendered on currently has about 31.5 Ghz of power with 24 GB of RAM. It pumped out this render in under an hour if I remember correctly.

If you look at the difference between this render and the other one I just recently posted you can clearly see which computer did which picture :p


Happy Rendering!

- Andrew

Andrew Schreiber 07-09-2011 09:19

Re: pic: VEX Mecanum Wheel/Tread
 
Quote:

Originally Posted by Akash Rastogi (Post 1076178)
Good design skills take work. Rendering, not too much skill as it is patience and having an eye for lighting and textures along with a solid computer/software package. (Trust me, I used to spend more time making something look good in a render than I used to spend on the actual design).

As a former animator I'm taking offense to this. Creating an effective render takes just as much skill (and imho a little more talent) than designing something. The artist must take into consideration the angle of the part, the lighting, what you can show off and what you can't (for static images) and several other factors that all contribute to the quality of the render. Remember, the point of a render is to convey the design in a simple and effective manner. If you make a render of a dark piece on a black background than you are not being effective. Just the same as if your goal was to design a ball shooter and your design sprays gear teeth across the field.

I guess what I'm saying is, don't discount the work other people do just because it looks easy. I've read books on lighting, hundreds are articles on shot composition, and spent tons of time practicing to learn what every setting can do to an image (for my camera which is a very similar artistic pursuit). Engineering has rules that can't be broken, arts have rules that can't be broken except when they should be... or when the artist feels like it... or when it looks good. It is a completely different mindset and, if you take the time to really learn it, I would claim it is as hard as any engineering.

sanddrag 07-09-2011 10:08

Re: pic: VEX Mecanum Wheel/Tread
 
Quote:

Originally Posted by Joyride_67_1902 (Post 1076181)
I am running about 5.2 Ghz of power with 8 gb of RAM, while the computer this was rendered on currently has about 31.5 Ghz of power with 24 GB of RAM.

Can you explain? I'm not aware of anything currently with such high clock speeds. Are we talking a networked rendering cluster or multiple cores or what?

Ether 07-09-2011 10:16

Re: pic: VEX Mecanum Wheel/Tread
 
Quote:

Originally Posted by MattC9 (Post 1076160)
Hey have you seen 44's VEX mech.'s? they work great! http://www.youtube.com/watch?v=WS8P0ZnK7PA

If scaled up to FRC size and weight, the roller gaps might become an issue.

See the discussion in posts 1, 15, 16, and 19 about roller gaps at this thread.



Akash Rastogi 07-09-2011 10:40

Re: pic: VEX Mecanum Wheel/Tread
 
Quote:

Originally Posted by Andrew Schreiber (Post 1076206)
As a former animator I'm taking offense to this.

Sorry you feel that way, but I still stand by my statement. Perhaps Solidworks' rendering software just lends itself to making nice renders easier, your experience with animation rendering may have been different. And like I said, some people can just have a good eye for that type of thing. Should've added in "in my opinion"

Andrew Schreiber 07-09-2011 11:23

Re: pic: VEX Mecanum Wheel/Tread
 
Quote:

Originally Posted by Akash Rastogi (Post 1076210)
Sorry you feel that way, but I still stand by my statement. Perhaps Solidworks' rendering software just lends itself to making nice renders easier, your experience with animation rendering may have been different. And like I said, some people can just have a good eye for that type of thing. Should've added in "in my opinion"

Except this was not done in Solidworks. I have experience in Solidworks' rendering system and I do say that it makes most renders acceptable (it is hard to REALLY screw it up).

But... I suppose this is what I get for saying that something artistic is hard to a bunch of engineery types.

Chris is me 07-09-2011 12:11

Re: pic: VEX Mecanum Wheel/Tread
 
This isn't a Solidworks drop and play with some settings and go render, as obviously indicated by the quality of the render. It's a 3DS Max render that obviously had quite a lot of time put into it.

Why are we bashing students for being so proud and inspired by a part design that they make a beautiful presentation of it? Yes, the render isn't as important as the CAD file, but no one was saying it was.

Roger 07-09-2011 12:15

Re: pic: VEX Mecanum Wheel/Tread
 
Not to take away the work you did rendering these (they are incredible; having done renders way back when in AutoCAD on a 386 computer I know there is a ton of work involved), but the thumbnail photo of the other photo has the strange effect of two little fuzzy animals with big bulgy eyes. It doesn't show in the larger photo, but now I can't look at the Image Gallery and not see them l:eek:king back at me. :)

Akash Rastogi 07-09-2011 12:19

Re: pic: VEX Mecanum Wheel/Tread
 
Quote:

Originally Posted by Chris is me (Post 1076216)
This isn't a Solidworks drop and play with some settings and go render, as obviously indicated by the quality of the render. It's a 3DS Max render that obviously had quite a lot of time put into it.

Why are we bashing students for being so proud and inspired by a part design that they make a beautiful presentation of it? Yes, the render isn't as important as the CAD file, but no one was saying it was.

Oh no no no, sorry you misunderstood, I wasn't commenting about this particular render. I was directing that at Matt from 1515 because I have talked him a lot and he mentions learning how to render better quite often. The comment wasn't directed at the OP. I wasn't bashing anything.

Ether 07-09-2011 12:58

Re: pic: VEX Mecanum Wheel/Tread
 
Quote:

Originally Posted by Joyride_67_1902 (Post 1076159)
We might try to build the updated version of this wheel later

Is the purpose of the dual rollers to increase load-handling capability?

Did you consider instead using a single row with larger rollers, to reduce gaps and overlap ?



Andrew Remmers 07-09-2011 14:03

Re: pic: VEX Mecanum Wheel/Tread
 
Quote:

Originally Posted by sanddrag (Post 1076208)
Can you explain? I'm not aware of anything currently with such high clock speeds. Are we talking a networked rendering cluster or multiple cores or what?

Lots of cores threaded together, I would have to ask the owner of the computer exactly what specs of it but I know its a Dual-Hex core 2.66 Ghz Or something like that. While I only have a dual core.

Quote:

Is the purpose of the dual rollers to increase load-handling capability?

Did you consider instead using a single row with larger rollers, to reduce gaps and overlap ?
The dual roller we find more efficient from experience in the past with mecanums however the challenge of the design with a dual roller is much harder than a single roller. I can assure you in the second wheel (also posted) the wheel has a perfectly round projection.

Quote:

Not to take away the work you did rendering these (they are incredible; having done renders way back when in AutoCAD on a 386 computer I know there is a ton of work involved), but the thumbnail photo of the other photo has the strange effect of two little fuzzy animals with big bulgy eyes. It doesn't show in the larger photo, but now I can't look at the Image Gallery and not see them lking back at me.
That might be the work of the image converter... CD wouldn't take the original photo because it is a 40 MB file. And CD also wouldn't handle the smaller PNG file. SO I had to find a converter online since I don't have photoshop or anything on my computer to convert to a JPG file. I just looked at it and saw what you were saying.

If you are interested in the FULL quality image send me a PM because I have to track down the file and I can attempt to email it to you.

- Andrew

R1ffSurf3r 07-09-2011 15:00

Re: pic: VEX Mecanum Wheel/Tread
 
Quote:

Originally Posted by Andrew Schreiber (Post 1076212)
But... I suppose this is what I get for saying that something artistic is hard to a bunch of engineery types.

to me, engineering is an art

Andrew Schreiber 07-09-2011 15:06

Re: pic: VEX Mecanum Wheel/Tread
 
Quote:

Originally Posted by R1ffSurf3r (Post 1076239)
to me, engineering is an art

Then you should understand how difficult other arts, such as writing and drawing, really are.

R1ffSurf3r 07-09-2011 15:07

Re: pic: VEX Mecanum Wheel/Tread
 
Quote:

Originally Posted by Andrew Schreiber (Post 1076241)
Then you should understand how difficult other arts, such as writing and drawing, really are.

music for me

Roger 08-09-2011 06:24

Re: pic: VEX Mecanum Wheel/Tread
 
I'm glad you see it too. The illusion is only in the thumbnail; the full photo it takes some effort to see the fuzzy animals. I don't think it's the conversion that does it, just being a tiny picture, and the natural loss of detail. I copy/pasted the thumbnail into Paint Shop Pro and at triple size the left fuzzy could go either way (animal or wheel), but at 4x there was enough detail to make it a wheel first.

Thanks for the offer of the full photo, but I must decline. If I save everything I liked, even electronically, I'd fill up my hard drive pretty quickly. As it is (before computers became my storage closet) I have a basement full of stuff. I'll just keep the memory of fuzzy mecanum wheels staring back at me and this (amusing?) picture... :yikes:


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