Freedom JR robot kit using BIOLOID bits

[billyzelsnack]

http://bipedrobotnewsjapan.blogspot.com/2009/10/freedom-jr-new-humanoid-robot-kit-was.html

I really like that he's using the ankle layout that's all the rage in Japan.

[limor]

all the rage because that foot axis probably breaks after few minutes of usage.
seems like the full weight of the robot is on the output shaft of the foot servo.



hobby humanoid structures traditionally rely on distributing the weight and torque between the output shaft and a free horn on the opposite side of the servo box long the axis of the output shaft.

[billyzelsnack]

Oh man. I didn't see that drawing. Really makes it looks structurally scary. I wonder if the Kondo brackets for this type of layout work any differently so as to span to the other side. Though maybe a cantilever configuration ends out working ok. Not that I am going to risk testing it with my precious AX-12's.

[billyzelsnack]

A grab from some random video I had lying around..
http://www.flickr.com/photos/85327336@N00/4024450209/

Looks like others do this in a bit more structurally sound way.

[Suicidal.Banana]

Thats gotta be the weirdest ever leg/foot design, like limor says that will prolly break after only a few mins into testing your new leg, i wouldn't recommend it.

[Tyberius]

I think its interesting to finally see a 3rd party humanoid using the AX-12+s, but I have to agree with everyone here so far, I don't see the advantage to having an ankle design like that. Almost the entire robot's weight is sitting on that servo shaft. I took note from the stock Bioloid design for my ankle/hip design on Giger:





I'd be much more interested to learn more about their controller, and if its going to be available separately.

[limor]

Giger's leg is beautiful

[billyzelsnack]

http://www.flickr.com/photos/85327336@N00/4084614832/

What do you guys think? This should be less harsh on the servo axis. The coupling between the servos is surprisingly stiff. The screws rub and I need to decide how I want to deal with that. Other than that I think I might have a go with building this out.

[Traull]

is it possible to make this from a standered bioloid or primium bioloid kit??

or could you buy the little parts on thir own?????

[Traull]

looking at it i believe it can be done apart from the chest piece, im not so sure as the board for the back panel looks much bigger than this model any ideas about how to get around this with a bioloid premium pack??

[billyzelsnack]

You can probably mail the guy and ask him if he'll sell just the bits you need.

[Traull]

has anyone attempted this design with a standered bioloid or a premium???

i have started to form the legs and upper body but i am having trouble with the placment of the gyro as it does not leave much space in the body region.

has anyone tried this design???