I’ve seen a lot of great robots over the years, but this one is: wow!!! Too bad we won’t see you in St. Louis this weekend.
Faster spin up times with less current through each motor?
For when your robot has to be a literal bench grinder
Simple and effective feeder… overall excellent robot of titanium this year.
Most importantly shorter velocity rebound times
In our view you can achieve rock solid speed with either overwhelming power or overwhelming inertia. We chose power, as it allows nimble control of a widely varying load.
I’d really love to see the driving side of the shooter. The 5 motor idea sounds pretty neat.
I also really like the 8 wheel mecanum, I’ll definitely try that out myself sometime as I have stacks on mecanum wheels lying around at 1102s shop.
Amazing robot as always! I’m excited to see how it performs.
How does the 60 Kpa auto work on the other side of the field? Do you have a separate blue alliance version?
It seems like the asymmetry of this robot would make the other side more complicated.
I would be very interested in learning more about the controls side of your shooter. Between the five motors and relatively long contact patch, it strikes me that the interaction with a ball might be long enough and the shooter responsive enough to meaningfully react to detected differences in load. This could allow you to, for example, propel fuel that comes in with the seam oriented one way differently than other fuel. Is there more going on than just a “maintain speed X” control loop?
Incredible robot as always!
https://drive.google.com/open?id=0B_xZWFfHxcxMbnJieE5ua3pOc3c
https://drive.google.com/open?id=0B_xZWFfHxcxMaGFkYklGNkhGRWM
Both documents are private.
Fixed.
Beautiful and well thought out robot as usual. It is really cool how you switch from loading a gear to loading fuel in just a second or so. It seems that of the large number of fuel shot at the boiler, only 3 (?) did not go in! Is this the only video where the robot collects the whole line of fuel?
Do you get some of both with the 5 motors? The rotors in those motors have pretty significant mass though it is not clear what fraction their rotational momentum would be of your whole shooter system.
Yes there is another version, and yes it is more complicated, but it does do blue.
Is that a fixed angled shooter? Or is it on a turret?
Just wondering, because those shots look like they can only be taken from that boiler. Overall, it’s a great robot, and I can’t wait to compete with y’all at Kansas City!
No there are some bad ones on the editing room floor.
The shooting wheel is quite large, and as you say the mass of the whole spinning system is significant, but as far as power vs. inertia designs go, this is heavier on the power.
I can’t claim the system is reacting within the contact time of a single ball, but it might be. The PID loop does have a lot of power at its disposal. We simply have the PID tuned to the best of our ability, there is not more going on than “maintain speed X,” although it may be with an exclamation point. There are other aspects of the shooter design that address the variations in the ball.
So how do you get the 5 motors to spin the one belt output?