Crap-Crab ... The quadruped

The trick is to have more

The trick is to have more patience than the computer/hardware. The only way you can fail is to give up. I’m sure it will all work great in the end!

Good to know :slight_smile: I hope you
Good to know :slight_smile: I hope you will get the electronic and mechanics working in a way that you can experiment with the AI. I would love to spend more time on my Chopstick Junior but now he’s sitting in a shelf with broken legs.

Not sure I can compete in

Not sure I can compete in patience with the computer/hardware :confused: But sure as hoot ain’t giving up either :wink:

New update!

Added another update with Crap-Crab v2.0. I think I’ll have to do a bit more reconstruction on some of the legs for better precision, but still it’s starting to look like something :smiley:

Looks cool!

The robot could have another couple of cd if you run out of space. I can’t wait to see it walking!

Looks professional. Did you

Looks professional. Did you solve the servo problems?

Professional hardly! But I

Professional hardly! But I don’t care I’m still in love :smiley:

And I don’t know about the servos yet. A large part of the problems was probably (and hopefully) the power supply, e.g. the breadboard not being able to supply enough current. But I still haven’t tried the two boards I’ve soldered with the servos. When I wrote that I’ve tested them I meant with a LED just to check that all the connections are ok.

Regarding the problem of not having a full 180° range, you made me aware of the fact that this i normal with low budget servos, so that’s just a limitation I’ll have to live with rather than a problem.

Anyway I’ll be connecting all the servos to do some testing and calibrating later on today or tomorrow when I get the time, so then I’ll know more.

Ah and thanks again for all your advice during this whole process :wink:

Yeah well about the CDs…

Yeah well about the CDs… They’re not the wonder material I first thought them to be. They tend to crack up when you put screws through them and apply a little presure, even though I burnt screw holes in them. The first one broke pretty fast, and these two new ones are allready cracking up bad. For now they are held together by the glue in the sense that one of the CDs is intact where the other is cracking and vice versa. But I fear it’s only a matter of time. Currently considering other options for the body…

Cardboard, wood, plastic and

Cardboard, wood, plastic and steel. Package cardboard is light, cheap and easy to shape. 3 or 5 layers of cardboard hold like 0.7mm hard plastic, but the biggest downsize is the allergy to water:)

NASA LEMUR

looks kinda similar… http://www-robotics.jpl.nasa.gov/systems/system.cfm?System=5