Have you heard of openDog, the open source hardware robot quadruped? A google
for open source robot dog brings up it and some others people are working on.
Boston Dynamics has been a big inspiration.
Now when do we get open source bipedal robots?
On Thursday, March 11, 2021, 12:58:00 PM MST, Chris Albertson
<albertson.ch...@gmail.com> wrote:
THanks, all for you advice. I think the best way to get a small ring gear
is to buy one.
What I'm doing is a design-study to find out the best kind of reduction
system. Timing belts are very easy to use but sun/planet gears are far
more compact. I want to make a machine, using machine-tool terminology it
will be a 12 axis system where every axis is rotary. Using robotic
terminology it will be a quadruped where each leg has 3 degrees of freedom.
My goal is to design something that can be made for under $100 per axis
($1,200 total cost) This is actually possible but performance is poor. I
want both the < $100 cost and excellent performance. I think it can be
done by using motors from quadcopter drones and then using a reduction
drive of 6 or 8 to 1. Harmonic and cycloidic reduction drives are to slow
6:1 or 10:1 should work.
The only way to know which design is best is to do multiple designs and
test simple prototypes. One of the options is gears.
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