Interesting leg
Interesting leg parallelogram usage. I’m working through a biped with a similar linked leg, hopefully it’ll work when hooked up.
Cool idea to use a diagonaly
Cool idea to use a diagonaly mounted actuator.
But how do you intend to lift the foot of the ground? with your current mechanical setup you wont get any forward motion. There mus be some sort of mechanism to move the entire weight over to one foot while the other foot is lifted up and swung forward. -Or am I misunderstanding, again? (it’s not that uncommon)
well, here:hows that?
well, here:
hows that?
yeah, look for a robot on
yeah, look for a robot on the site called “NEON Biped,” it was this robot’s prototype or Proof of Concept. it uses the same paralellogram leg
The ankle pivot explains a
The ankle pivot explains a bit, but with that weight on the top where are you going to sit? Unless that weight is actually you and you move from side to side as it walks?
**hows this view? **
hows this view?
you sit right in front of it as it swings moved by a smaller version of that actuator. However, yes, my original plan was to use my body weight to shift from side to side.
HID for human actuators
heheheh
I envision a new “Human Interface Device” to control the human’s weight shifting by the micro controller. Two sharp pins rising from the seat. One under each buttock. With each step the sharp pain or (with learning actuators like these), the anticipation thereof will set the body weight in motion. Just get the timing right.
HA!
HA!
What kind of actuator
What kind of actuator mechanism do you plan to use for the tilting ancles?
Awesome
That thing looks awesome! I hope it works.
thanks! i’ll post a video
thanks! i’ll post a video of my latest progress ASAP!
nope, no tilt anymore
nope, no tilt anymore.
after some thought i fugured a robot this big would have a good chance of breaking if it tilted, because my first attempt (which i never posted) failed totally, and i wanted to be sure that this one works just right
it has wheels on the feet so that they can glide over serfaces more easily as if the foot was off the ground.
i’l be finishing it next month, so I’ll post a video within a few weeks at most.
toy robots with the same
toy robots with the same kind of “walk” usually has wheels that can only roll forward. This make sure that one leg remains stationary while the other pushes forward. With free running wheels, one foot will roll backwards while the other rolls forward, then they’ll both run back to their starting position before repeating again in opposite order for the other step.
The solution used in the toys I’ve disected are variations of this:
The cogwheel is mounted on the same axle as the wheels underneat the foot. When the cogwheel rotates counter clockwise, the red arm just slides on top og the "teeth". But when you try to turn the cogwheel clockwise the red arm will get stuck against the first cog/tooth it encounters.
K.I.S.S.
techspeak
The technical term for that is ratchet. But you may be describing the function of a freewheel.
Yup
Yes, I’ve seen that. in fact, my earliest bipeds used that. This new robot uses a similar technique. a metal bar like below with rubber or something slides along the ground. Then when it backs up, it sticks into the ground, allowing the other leg to move forward. I couldn’y make the “rachet” (that rik said it was called) strong enough for 200 lbs.
I tried to 'Keep It Super Simple" but I think this is pretty good. It is an outdoor targeted robot. And my tests have shown that this would work on coarse surfaces like carpet, cemet, asphalt, etc.
FUSES NOW!!!
FOR ALL THAT IS HOLY IN THE WORLD, USE A FUSE!!! I can truly say from vast personal experience fuses have saved my ass many, many times. On that note -I lost a good motorcycle because of a paperclip (which replaced a fuse)! This is simply the best $3 insurance one can ever buy.
the fuse is a good idea, no
the fuse is a good idea, no doubt, but the fusebox designed for this actuator is not cheap. i may just build my own though, i’ll think it all over
congratulations!You 'll be a
congratulations!
You ‘ll be a local celebrity riding that thing through town to pick up our groceries. But don’t pay any attention to any hecklers, just know that we fellow LMR’ers think it’s friggin’ cool, OK?
Thanks! But I don’t think
Thanks!
But I don’t think its all that great. To be honest, I walks rediculously slow… and it only works on certain ground. When I post the video, you’ll see what I mean…Yikes!
But thanks! Comments like that make building this kind of stuff even more worth it!
It’s Version 1.0
The one you’ve made is nice, and you’ll use the experience from this to build an even better one.