Author Topic: FIRST Robotics Competition Discussion  (Read 4528 times)

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Offline pimathbrainiac

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Re: FIRST Robotics Competition Discussion
« Reply #15 on: February 19, 2014, 07:32:39 am »
[...] Surprisingly, everything was working for the most part today and we were ready ahead of schedule.

Same here. (For the first time since 2007, actually).
I am Bach.

Offline fb39ca4

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Re: FIRST Robotics Competition Discussion
« Reply #16 on: February 19, 2014, 12:51:14 pm »
Hmm, that's quite a short lever arm on that shooter.  How is it powered?
It isn't shown in the CAD model, but cables run around those pulleys on the side of the shooter arms, and then attach to four springs which then attach in the back of the chassis. To pull the arm back, we have shamelessly copied this mechanism. From testing yesterday, we found out it is sufficient to throw a ball in the high goal from 20 feet away, which is actually too far, so we will have to do some tweaking.

Offline fb39ca4

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Re: FIRST Robotics Competition Discussion
« Reply #17 on: February 23, 2014, 01:12:42 am »
My team hates pneumatics, so I designed a servo actuator for the VexPro Ball Shifters, and from testing today, we found out that it works!
« Last Edit: February 23, 2014, 01:15:16 am by fb39ca4 »

Offline pimathbrainiac

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Re: FIRST Robotics Competition Discussion
« Reply #18 on: February 23, 2014, 10:05:53 am »
That's cool!

My team still uses pneumagics, though D:
I am Bach.