PDA

View Full Version : "Knewt" by Keith Rowell



Matt
07-20-2008, 05:11 PM
Wow, what a gorgeous little mech!

So who is going to hunt down the maker and get him invited over here :)

YouTube - Atlanta Hobby Robot Club Robot Rally Open 1


Atlanta Hobby Robot Club Robot Rally 2006 - the open competition is for all types of entries to be judged by our panel of expert roboticists. This video features First Place Winner "Knewt" by Keith Rowell.

ScuD
07-20-2008, 05:18 PM
I saw that little guy a few months ago, and I love it! Reminds me of the AT-ST walker (or a chicken, i get confused..)

jdolecki
07-21-2008, 08:33 AM
try here

http://knewt.blogspot.com/

crabfu
07-21-2008, 08:52 AM
yeah I saw that a little while ago too.... brilliant, pure beauty!

-Crabfu

DresnerRobotics
07-21-2008, 12:35 PM
I love the aesthetics on this bot... going to have to track the creator down :D

Adrenalynn
07-21-2008, 12:47 PM
rowell >AT< mindspring [Dot] com

http://www.blogger.com/profile/10479265426594851362

Keith Rowell
07-22-2008, 07:48 PM
Well Hello Guys,
thanks for the invitation. I appreciate all the nice things you've said about KNEWT. :happy:
I'll gladly answer any questions.
http://photos1.blogger.com/img/84/1974/1024/head-board-04.jpg

dcalkins
07-22-2008, 08:51 PM
You need to come to RoboGames!

http://robogames.net

DresnerRobotics
07-22-2008, 09:42 PM
Well Hello Guys,
thanks for the invitation. I appreciate all the nice things you've said about KNEWT. :happy:
I'll gladly answer any questions.
http://photos1.blogger.com/img/84/1974/1024/head-board-04.jpg

Love the walker!

How many DOF per leg?

4mem8
07-22-2008, 09:48 PM
Keith Rowall: Just amazing stuff you have done with Newt, I have just read almost everything you have posted. I just love the aesthetics of how it moves, This is my idea of how a Mech should move. Will this machine go into production at some stage?? Really well done.

crabfu
07-23-2008, 11:44 AM
Keith.... I'm a huge fan here, love the look and design of KNEWT!!! congratulations on such an work of art :)

-Crabfu

Keith Rowell
07-24-2008, 11:44 AM
I've considered it. I'll try to get a "delegation" of us Atlanta guys intrested in going next year.
keith


You need to come to RoboGames!

http://robogames.net

Keith Rowell
07-24-2008, 11:46 AM
3 DOF per leg.
1 rotate at hip (shoulder?)
2 forward and back
3 lift / lower foot

keith


Love the walker!

How many DOF per leg?

Keith Rowell
07-24-2008, 12:49 PM
Thanks so much for the kind words.
There was an attempt to put KNEWT into production but in the 2 years of it's development, the Japanese forms of this type of toy advanced far beyond KNEWT in terms of servo control. It will cost about $5000 for that next stage of development. Any sponsors out there intrested?

Moving the project forward from this point, KNEWT will be re-designed using the existing servo and control schemes from one of the Japanese humanoid bots.

You guys have some experience with these systems. Which one would you reccomend KNEWT use? I'm looking for best smooth motion (ramping), best training interface, and best wireless package.

And thanks again for the compliments.

Keith Rowell
http://photos1.blogger.com/hello/84/1974/1024/IMGA0644.jpg



Keith Rowall: Just amazing stuff you have done with Newt, I have just read almost everything you have posted. I just love the aesthetics of how it moves, This is my idea of how a Mech should move. Will this machine go into production at some stage?? Really well done.

openmindedjjj
07-24-2008, 01:03 PM
i would try some of the more stronger servo's.Robotis has some nice servo's and hitec has
the HSR 5990tg servo,which im impressed with.

4mem8
07-24-2008, 01:18 PM
Ah, now I can see why it may not go into production, I should have seen the reason. Wish I had the $'s I would fund you myself. I love this area of robotics. I would like to try something like this design after I finish my J5 but would need more info if you are willing to share. I look on with interest to your future development with Knewt.



There was an attempt to put KNEWT into production but in the 2 years of it's development, the Japanese forms of this type of toy advanced far beyond KNEWT in terms of servo control. It will cost about $5000 for that next stage of development. Any sponsors out there intrested?


http://photos1.blogger.com/hello/84/1974/1024/IMGA0644.jpg

Keith Rowell
07-28-2008, 05:42 PM
Thanks a million for the feedback,

That HSR 5990tg looks great with 400+ oz/in of torque. The Robotis servos have lots of nice mounting flanges all over, that's a great feature for flexibility in the mechanical design area.

What do you think of the programming interface and motion smoothness of Robotis vs. Hitec?

keith rowell

http://tribotix.com/images/Robotis/Dynamixel/RX_64_Prod.jpg http://www2.gpmd.com/image/h/hrcm5990.jpg


i would try some of the more stronger servo's.Robotis has some nice servo's and hitec has
the HSR 5990tg servo,which im impressed with.

Keith Rowell
07-28-2008, 05:47 PM
I left out one,
it's 4 DOF per leg
there's a left and right "swagger" joint both in the shoulder and ankle.
This allows for the shifting of KNEWT's weight from one foot to the other.
One servo actuates for both legs equally and is located on Knewt's back.

keith rowell




3 DOF per leg.
1 rotate at hip (shoulder?)
2 forward and back
3 lift / lower foot

keith

Keith Rowell
07-28-2008, 05:53 PM
The basic idea of the design is that each leg is like a tripod.
From the shoulder to the ankle there are two linkages on the foreward / aft motion, and a third linkage at 90 degrees inside each leg that is attached with a ball joint to a hard point on the ankle, and a balancing motor in at the top in the body. The dark black vertical lines in the image.

keith rowell

http://photos1.blogger.com/img/84/1974/1024/legNhip06.jpg

[quote=4mem8;15937]Ah, now I can see why it may not go into production, I should have seen the reason. Wish I had the $'s I would fund you myself. I love this area of robotics. I would like to try something like this design after I finish my J5 but would need more info if you are willing to share. I look on with interest to your future development with Knewt.

4mem8
07-28-2008, 07:25 PM
Hey Keith, Many thanks for the info, I may have to get back to you for a bit more detail and maybe some pics close up, I have just bought Tom Changs Biped scout, It would be nice to see if a conversion is possible with your system?.