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Re: Build challenges, and some advice (maybe)
To the first half, I have always tried to design each part in easily changeable modules. this served 2085 especially well in 2014 when parts broke frequently, but could be quickly and painlessly replaced.
Next, and this is a big one, make the robot as simple as possible. If you can implement a passive mechanism in an actives stead, you're removing complexity. In 2015, we got away with using single motor and no pneumatics to do all manipulating, faring well in competition.
And for the shaft, have you made the gap connecting gearbox to arm as minuscule as possible? or reinforcing the shaft with a broached steel sleeve?
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