December 3, 2000

Progress

Platform:

  • One upper leg mostly constructed, most parts of the second upper leg ready to go.

Sensors:

  • No progress.

Software:

  • No progress..

Motors:

  • No progress.

Other:

  • Nothing much else.


One of Bing's upper legs.  Three servos, twelve custom pieces of aluminum, twenty seven machine screws, and (for Christmas cheer) a partridge in a pear tree (partridge and tree not shown).  Click for a larger image.

Work on Bing has gone a little slower than expected the last few weeks, but I'm not terrified about that yet.  I have been focusing completely on getting Bing's frame made -- which for now means building Bing's upper legs and working on the design of the body.  One of the upper legs is essentially complete and the second will be ready soon.  The project summary on the main web page shows that everything else is drastically behind schedule, but that's ok for now.  Next week maybe I'll readjust the schedule to take this reality into account.  Now I'm looking at late January or so for Bing to be completely constructed and the basic software getting sensor data and communicating with the PC host.  That leaves plenty of time to teach Bing to see, feel, and walk.  Gulp.  Heh.  I hope.

Regarding Bing's body, I have come to realize that I will not be able to design it completely right now; there are too many unknowns.  But I have a basic idea in mind which is enough for me to get started.

My biggest concern right now is that Bing might end up being too tall, despite efforts to keep it small.  It shouldn't be a problem to keep it barely under the 31cm height limit for the Trinity contest, but the rules state that when operating, no part of the robot can go higher than 31 cm and I'm worried that Bing will rise slightly as it walks.  So I'm going to be scrambling to figure out how to cut an inch off its height (which won't be easy).  One possibility is to build my own universal joints to replace the ones I'm using now at the ankle and hip...  that would be a complicated piece of work but I don't really see any other place I can cut.

In other news, I have yet again started rethinking the vision system; now I have no idea what I'll end up doing.  All of the components are up for grabs.  I still have about two weeks to figure it out, I guess.

I took a bunch of photos while building the upper leg, and have compiled them into a little pictorial essay, which the interested reader can view by clicking here.  A word of warning:  because of all the pictures, the page will take a while to download.