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#1
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Re: Last Minute Changes
Wasn't too involved before 2010, so can't comment past "of course".
2010: Kicker did not work when robot went into crate. Partial redesign of it before week 1 SD regional. Intake still didn't work. Complete intake redesign before LA regional. Changed kicking element (angle + reinforcement) and increased kicker power between SD and LA, and then again between LA and Champs. 2011: Intake & minibot did not work at SD. Redesign minibot, adjust intake for LA. Intake still sketchy in LA. Redesign for Champs. Minibot too slow during elims at Champs. Remove and replace with 1114's prototype deployer between matches. |
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#2
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Re: Last Minute Changes
At our second regional we had to lower the rod that we used to stop our drawbridge from lowering too soon when we raise our dumper mechanism. Because of that for one of the matches we couldnt shoot. We had to lower it because it couldnt fit into the box. After the next match we fixed it so that it could work and still fit in the box. At the first regional we had angled our front fender to help ead balls in, we fixed it, it didnt really change our game though
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#3
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Re: Last Minute Changes
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It probably should be an FRC build-season mantra: never put off until tomorrow what you can do tonight. |
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#4
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Re: Last Minute Changes
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2011 We had a great deployment mechanism and a decent minibot (4 seconds using the gearboxes on the motors) ready after the build season. After scouting Kettering and seeing the 2 second direct drive units we went that direction and had the new ones ready for our first competition (W. MI district) and it worked for us well on to MSC and St Louis. 2012 Our original idea for balancing 3 robots was to be a robot "car hauler" and have a robot on top of ours. After the West Michigan District where we did not see many robots suitable to ride on us, We built a "stinger" to replace our ramp appendage for Niles district. If we had not had the ramp idea we would not have had the room or weight to have the stinger. We still have the ramp and could rapidly change it in the pit but I think the stinger is much more useful as we can rapidly co-op balance in the seeding matches and the ramp was only an end game piece. |
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#5
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Re: Last Minute Changes
One of my key FRC philosophies is: if you aren't improving, you're falling behind. What is successful in Week 1 may not cut it by Championship, so continuous improvement is an absolute necessity! After each event this year we had a full team meeting to discuss what went well and what we could improve for the next event.
Since we "finished" our robot, a couple days before Stop Build Day, we have changed pretty much every subsystem at least once, be it a subtle or drastic change. Among other things, we went through:
It's a very different Scorpion than we first put together 7 weeks ago. Iterative design has always been a big thing for 148, and this year was no different! |
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#6
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Re: Last Minute Changes
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#7
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Re: Last Minute Changes
I'd like to know how you made your robot modular enough to change that one. Usually for our team, our frame has a massive amount of welds that make it short of a miracle to change our wheels, lest they are fairly similar in dimension. Though, with it being 148, I'd bet money on your frame being amorphous metal controlled by thought alone.
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#8
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Re: Last Minute Changes
Seeing teams like 166 at our regional this weekend, this isn't far from the truth.
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#9
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Re: Last Minute Changes
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#10
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Re: Last Minute Changes
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#11
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Re: Last Minute Changes
In 2011, we didn't have a minibot or deployment until our second competition, and we were constantly tweaking it.
This year, we added pneumatic "Stingers" to our robot to aid balancing, and removed our shooter hood adjustment system in favor of a fixed hood, and added a second pneumatic tank. |
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#12
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Re: Last Minute Changes
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Last edited by PAR_WIG1350 : 06-04-2012 at 18:10. |
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#13
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Re: Last Minute Changes
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In that situation, I'd like to give the team the benefit of the doubt with the most lenient interpretation consistent with the rule, but I'm not entirely convinced that the modification vs. module dichotomy can be stretched that far. There's a continuum between a modification entirely conceived and built from raw materials at the event, and a prefabricated module; how do we decide where to draw the line? The rule doesn't really give any guidance. I'm inclined to think that if the team intended the part to be used on the robot as a replaceable module, and prepared it in advance, it was their obligation to understand that [R03] might be applicable, and plan accordingly. For modifications undertaken from materials gathered at the event (which were unlikely to have been originally intended as robot parts), I've previously ruled that they were legal, provided the modification wasn't going to be reversed at the event. (The status of the modifications/modules at subsequent events would depend on what the team did and intended to do with them.) 1 I mention that because of course a strict reading of that rule makes no sense—just about anything could be added to a robot, but it's not practical to weigh it all. |
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#14
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Re: Last Minute Changes
We had barely a hint of our current shooter on bag day. Since that time we have changed our firing mechanism, tried to put panels on the wheels and fill the space with foam--but only succeeded in splattering it all over the whole thing when it was turned on--then put stickers over the panels to hide the mess behind them, then took those same panels off and made some "other" changes to the wheels. We also took off the turret motor and chain--opting instead to bolt the shooter down on its lazy susan--moved both motors to the same belt and changed the gear ratio. In addition, we changed the compression factor on the ball and its points of contact within the shooter track, and the release point (anchoring it where it had been already).Finally, we got an encoder and PID loop working, entered preset speeds onto the controller, got vision tracking to work for auto-aiming (albeit for only one attempt before it went haywire--possibly for good) and a distance readout (though it is still in question whether or not we will use it due to the lag it causes on the camera).
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