As with my Nano walker, the walking mechanism's taken soo long to build! Each piece was 'milled' by hand out of polycarb using my dremel and a small drill bit. To make the holes in the cams for the motor D-shaft, I ground down a piece of 3mm silver steel to match, then heated it up with a lighter and used it to melt the right shaped hole.
Below is a picture of all the finished leg pieces:
and here's it all assembled into a leg unit:
It all mounts directly onto the motor shaft, and is a very tight fit so no glue required. It works remarkably well given it's fairly rough construction. Each leg weighs about 10g, so leaves plenty of extra weight to play with. It's currently built into the chassis of the lifter grabber thing; the weapon on that worked well, but nothing else about that robot was good..
Here's a video of it walking: https://www.youtube.com/watch?v=YuJaRKL ... e=youtu.be
It's a bit slower than I'd hoped, but it's very smooth and controllable. Still yet to add proper feet so that'll likely change it's performance somewhat.
Not sure what weapon I'm going to put on it... Walking spinners have been done plenty of times before, and I already have two spinners on my team. I was planning on using a beetleweight drive motor as a really powerful flipper, but that requires a load of extra custom electronics to control it which is a bit of a pain to put together in less than a week. The other option is to put the lifter grabber mechanism back on, and use the extra available weight to try and make it less useless, but not sure how well that'll turn out.. I'll think of something :L
. I can probably get it in weight ok, but getting it to fit in the 4 inch cube is more of a challenge.