This is the technical document for the hexpod walker. The hexpod walker is a six-legged walking robot similar to an insect. The walker's legs have a fully articulate motion. The body and the legs were cut out of plastic that was designed on a CNC machine. The movement of the 12 servos on the 6 legs are controlled by a microcontroller, more accurately a Basic stamp 2.
We started construction of the hexpod walker late October. We started leg
design because we knew it would be the hardest part of the construction.
Our predictions of the legs being the hardest part was true and remains true.
They have been re-designed about 6 times and we still haven't made a perfect
design. We have constructed a design that functions quite nicely, though.
After we finished the legs, the body was a quick design. It only took a couple
of weeks with two re-designs. After the design stage was complete, we started
construction of the hexpod walker. After building the walker with metal screws
we found that the legs wouldn't move freely. So we replaced almost of the
metal screws with nylon screws which allowed the legs to move freely. Then
we moved on to programming the walk into the micro controller to allow the
robot to move around. The programming step turned out to be harder than expected
because we ran into crosstalk problems with the servos. We solved the cross
talk problem and carried on. Then the the only thing left was to program the
walking pattern into the hex pod walker. We went through a couple of walking
patterns for various reasons, then set for a tripod walking pattern.
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