Meet Hi No Hikari

[darkback2]

This is my latest project spurred on by Tybes' post on PLM design.

My wife got a bunch of AX-12s over the summer planning to build a robot. Well her busy schedule made building a robot all but impossible. so I decided to put those robot parts to good use. :-p

I designed all of the brackets using turboCAD, cut the parts out using a bandsaw and drill press. I then bent them using a bench vice and hammer. you can see the dings in all of the parts. The only parts left are the 3 DOF arms. Because we are on a tight budget I have to wait until next month to get the servos for those. I'm not sure about the weight. Adding arms might put it over the limit for AX-12s, and I can't really swing 18Fs right now. I have teflon for the bottoms of the feet, though I'm not sure I'm going to make those right away. I sort of want to see it moving first.

If possible I will be saving up to build an RX-24F version over the next two years... of course by then the RX-24Fs will be old hat and we will be using something really incredible.

Here are some pics and stats. I'll try to post more video as I get things up and running.

Current stats:

Height 18.25 inches
Legs 12.75 inches
Current weight 1.76 kg :-(











Here are the PDF files if you want to build one yourself. I'll update them periodically.

[Connor]

DB, I'm a little concerned about how far apart you have the hips.. That looks like it might be a little to much.. you may need to bring them in to keep from overloading the ankle role servos...

[darkback2]

DB, I'm a little concerned about how far apart you have the hips.. That looks like it might be a little to much.. you may need to bring them in to keep from overloading the ankle role servos...

I hear you there. The hips are currently 11cm wide at the center of the servo. I'm looking at making the feet smaller because right now they are redonculous. I was also considering switching up to AX-18s in the future though I'm not really into strong arming my way around solving a problem.

I'm hoping to get it wired today and I'll do some tests to see if I need smaller hips, and conversly feet. I was originally hoping to keep the payload down, but there are no ways around the laws of physics. :-)

DB

[Tyberius]

I'd keep those feet as is, you're going to be unpleasantly surprised at how hard stable walking gaits are to develop.

The hips are a bit wide but it looks great!!

[darkback2]

Part of my hope is that I can use all 4 corner leg servos so both ankles and both hips to tilt the bot and shift its weight and sort of shuffle walk. I know that still puts a strain on the ankles, so we'll have to see how bad it is after its wired. In any case banging out smaller hips wouldn't take that long. The feet are 13cm * 8cm so they are really big, but big means stable. :-)

[RobotAtlas]

While the leg design is great, I was really amazed at this:

My wife got a bunch of AX-12s over the summer planning to build a robot.

[Matt]

Um, what the hell is slithering through the background? LOL

[sthmck]

Um, what the hell is slithering through the background? LOL

Julius Squeezer- the python code snake

[gdubb2]

DB.. That's looking great.. and congrats on keeping Maya so busy that you were able to abscond with the servos..Brilliant..

Gary

[animeunplugged]

Awesome!!! Now all you need is a head and a body!