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Do you think a practice robot is needed to compete?
So this has come up in several topics as of late. So I'd like to post a poll for it and see what kind of response we get. Do you think you need to build a practice robot. These are used: after the bag day when you normally would loose access to your robot and before your first competition appearance.
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One reason we build more that one robot is because we have so many students and building more lets you engage the students more during build. With the big influx of members this year we have decided to build three robots. At the end of it our students will have more hands on experience and a higher level of involvement.
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5. We're tired of building robots by the middle of February
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We started building practice robots for the 2014 season, and I can say that it helps a lot. Especially this year. Every day we would have our driver practice stacking, and it's one of the reasons we made the improvement that we did from week 1 to week 3. Only modification we made to the robot was a cardboard box with a slanted top for a ramp, but the practice bot helped a lot with driver practice. It was actually so dead from all the usage that at off season events it couldn't make stacks of more than 2 or 3 totes without the lift trolley coming off the guides :P.
I don't necessarily think it is necessary to compete, but it would be necessary to be really competitive. |
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6. We have the resources and the drive, so we build it. We're always working to improve.
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Of course you don't need one to compete. There are Regional Winners, Einstein teams, and (in many seasons) even World Champions that don't build them.
What a practice bot buys you is (a) extra practice time for your drivers and programmers, (b) the ability to test out and develop improved versions of mechanisms to swap onto your comp bot, and (c) some measure of insurance on your season if after 6 weeks the robot isn't done due to unanticipated design issues, weather, sponsor delays, work travel, etc. If you design the right robot for the game and for your team's abilities, are able to finish it on time to practice and tune it, and don't encounter any performance issues that you can't fix at an event, you might not need a second robot. But most (I'd argue all) teams are not good/lucky enough to ensure that all of that happens season after season. For this reason, building a practice robot is one of the first pieces of advice I give to a team that is looking to increase the effectiveness of their robot. It can rescue your season from early mistakes, and even if you nailed it on initial design, your drivers will only get better. |
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7: It depends on the team's geography.
I don't think they're necessary at all to be competitive at Minnesota events, but I'm pretty sure there are regions where that might not be the case. |
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If you have the money, then go for it, but honestly I think the money and materials could be much better spent. We never use practice bots and we fare fine with out them.
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Practice robots? What's that? :rolleyes:
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Nothing more than a (single) toaster on wheels (or whatever a kitbot-plus-nothing-else is called in your neck of the woods) is needed to "compete".
In this thread and the parallel one, folks keep talking past each other by using different definitions of "compete" and of "competitive". Using the word "competitive" when you mean "performs well", "performs very well", or "good chance of winning a banner"; is a mistake because the people you are trying to communicate with are unlikely to define that word the same way you do. The term "compete", and its cousin, "competitive", are far too imprecise in discussions like this one. They are words that looks good on a PowerPoint slide, but that don't help you much when you try to get down to brass tacks. Blake [EDIT]To be more precise, any (immobile) lump the inspectors will let you put on the field for a match "will enable you to participate in an FRC competition". In other words, "will enable you to compete".[/EDIT] |
At a lower ny event you could probably win with an Ri3d build. In fact I believe in all of lower ny (around 100 teams) only one team builds a practice robot.
Now if your talking winning svr, or dallas, or waterloo then yes to win you pretty much need a practice robot. Less with dallas because of the time but you get the point. This year we are making a prototype bot so we will have something to drive around after bag day but, Idk if I would call it a practice bot. If however we have a simple robot we might change stuff up and have a full fledged practice robot. The biggest obstacle is money especially since we will have to buy another kop drive train (missed the opt out period). Overall no at most events. |
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You don't need it. But if you can afford it than it will only help you improve.
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For all possible definitions of "compete" and "competitive", a practice bot is likely to have a high ROI. |
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Our practice robot is a key part of our prototyping process. It allows us to test our designs before building the final product. Over the years we have worked to make the practice robot as similar to the competition robot as possible with varying success. Building a practice robot is as much of an exercise in engineering as it is a competitive advantage for our team.
Since building a practice robot for the first time in 2013 we have become a decent team. **Written based on experience on 1318** |
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If only there was a way to get the same Return without the Investment of building a second robot... :D |
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We have found that the price is really not much more because we initially used the pre2015 components and used it to test and prove/improve our manipulators. We typically competed in a week 5 or 6 event so to keep our fab kids interested and motivated, it was a great tool. We are by no means a big budget team - and this year may be a bit of a struggle because we have seemed to have lost one of our big sponsors (fingers crossed that we can get them back into the fold). But the second bot is a great way to keep the younger kids engaged in the development process throughout the season. Many of our experienced kids mentor the young'uns after bag and tag and show them the ropes. Again, the biggest component to all of this is managing the build and the team. Without an ample supply of students and mentors, this effort would not be worth it. My two cents! |
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Some people like it, I personally think it creates an uneven playing field. |
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To my knowledge 694 doesn't build one and neither does 2601 arguably the 2 of the highest funded; best teams in nyc. On li I'm pretty sure only 329 builds one which makes sense since they have an 80% practice field. |
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558, starting in 2014, builds at a minimum a second chassis. Given the withholding allowance this allows us the ability to iterate our superstructures while not breaking our bank. As a smaller team with limited resources and funding we are working to expand our abilities but living within our current limits.
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The poll answers aren't all inclusive.
As others have mentioned, you don't "need" a practice robot to compete, but I feel it helps if you can pull it off. We have had practice robots in the past few years that aren't as complete as the competition one, for drive practice and working out programming etc. There should be a category: "We build one if we have the time and resources to be better prepared for competition" We are going to try to build (2) robots this year as complete as possible for better practice and fixing problems as the season progresses. |
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We have never built a practice bot.
I like the idea of having separate hardware for the programmers to work on. What kind of schedule do you follow? Is the competitive bot finished before the practice bot is started or do you build a practice bot first to try out the base and some critical design elements and then build the competition bot? Dave |
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I don't see a way to change this on this forum. Is there a way? I was more curious to see if there was a significant majority leaning towards wanting or needing a practice bot and so far there is good reason to look into this further. |
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Here's a question. Suppose the 6 see build system is eliminated and replaced with no bag and tag, would the top teams still build a practice bot?
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But for us, we start building a prototype "base" as soon as we know what type of drive train and base configuration it will be. This is basically for driving around and putting mock items on to check if things are going to fit or work. And for programming. And then once we know what we're building for real, we start to build the real one. For us this year, I suspect we will take the prototype further so there will be (2) robots that function the same way with all stuff on it, one for practice, one for competition. That's my gut feeling anyway, I'm not 100% involved in those decisions. |
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We have never built one but we don't rule it out.
The withholding allowance, bag-n-tag, and the district tournament schedule ("out of bag" time) allow a lot of access to the robot and provide much of the benefit that comes from full-time access to a less-than-perfect-fidelity practice bot (which is what most practice bots really are). Going to a 3rd district event (not always possible) also provides a good return on the investment in "practice". The early results of this survey demonstrate the gap between the "Chief Delphi" crowd and everybody else. What percentage of total teams build a practice bot? Its nowhere close to 80%. |
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I used to go around as CSA and, in addition to my duties, ask about which programming language and speed controls (also CAN or PWM) teams use. In that capacity I could get real data on what people are really doing and, as the CSA, I could see what's working and not working. This also made it possible to be ahead of an issue - if everyone with a particular part is seeing a problem I know where to go immediately if it becomes apparent. So this is, at best, a barometer of the sentiment of the people who bother to contribute and should not be used in place of a proper study. However the fact it's not all inclusive doesn't remove the fact that there is a clear majority from those that do contribute at this time. Also at this time only 8.63% see no value in a practice bot at all. So 91.37% can find a good reason to do it or would consider it if they had the resources. |
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It'd be nice to redo this poll w/ noting who is in districts and who isn't.
A lot of mid to top level CA teams build a somewhat decent practice bot, and I think they'd stop doing so under bag and tag. |
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We aren't in the district model and built a practice robot for the first time last year. We didn't manage our time as well as we should have and ran into rushing to complete the competition bot near the end of the 6 weeks. We also had quirks pop up on the competition robot that we didn't have on the practice bot.
The biggest thing it gave us was more drive team practice and the ability to iterate between events. Without it we wouldn't have been able to add can grabbers or practice with our ramp, both which were added mid-season. We have already decided we will be building 2 again this year. Once we go to the district model we may not because of the un-bag windows. |
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Since we have been building practice bots for the past 4? Years, our results are much improved. Since we have used swerve since I and my sons joined 1640, using the practice bot has greatly improved our drivers ability to do the things necessary for each game. It also allows us to make any adjustments needed on doue ( the practice bot ) and install them on prime ( our competition bot ) during the season.
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For those that don't build a practice bot, do you have other "experiment bots" that you can use as a drive platform for testing mechanisms, drive trains, autonomous modes?
My team hopes to build a practice bot if for nothing else than to have something for the programming and controls teams to have something to experiment with in parallel with other stuff being developed. And then for next year to have something driveable during the pre-season. |
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- regionally, in areas where there are fewer events vs. a greater number of competitive opportunities - by team age, showing a greater number of rookies or 2nd year teams not (/not yet?) utilizing this strategy - by enforced competition model, district areas vs. open competition areas - by declared team sponsorship level/yearly budget amount ...and potentially by other socioeconomic or program-specific factors I'm not considering. We're also being pretty broad at what a "second robot" constitutes. Are we talking about teams that knowingly mill or punch a second or third set of pieces during the build season and assemble within the current 6 week window? Are we counting those who use scrap wood in the shop, but only after the robot has been bagged? What if the second robot doesn't have electronics, but they've mocked up a new arm on an immobile frame? Or what if the team continues building new appendages without a base? My point is, we've got enough potential variables here and zero data aside from CD's poll as far as "second robots" are concerned, and even that has many different definitions. I've got a gut feel and an opinion myself, but I am sure everyone else does, too. I think the real question for FIRST is: how many teams put down the tools completely until their event? I'm not talking just CAD, I mean teams that have any physical work going on whatsoever. If that number proves to be the overwhelming majority, what is lost by giving them the opportunity (but again, NOT the obligation) to continue building until their first competition and on throughout the FIRST season? And with that question, we've once again returned to this thread. |
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Improving your design and fixing problems make you more competitive. Practice robots are one method. There are several threads swirling around this same issue and the polls do not reflect simple available options. I feel a six week build plus an out of bag system for regionals would be the best fix for now. I would probably drop the practice bot and make incremental improvements during those windows. Of course, I would not need a practice bot if the 6 week build limitation was gone. Our last regional is week 2. Assuming that we qualify for championship, I would take those practice robot resources and build a new machine.** Is that what we want as a community? Personally I'm a fan of incremental improvement. David Disclaimer... this is my opinion and does not reflect my team's views. ** I understand trying to copy components of another design is not simple, nor will it automatically be successful. |
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On 461, the past few years we have built a majority of a full practice bot but after this year with districts we will likely be building just one bot and spend more time on iterating and testing sooner. The unbag windows were so large and the time between events was so short that we hardly used the practice bot since we could just unbag the main bot and practice/improve.
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I've created this thread to try to generate such a canvas/questionnaire. |
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My favorite reason to build a practice bot is because we get to hang out with our friends on other teams more. During the competition season I normally attend three-four regionals (2 competing with 3847 and 1-2 as a volunteer). The other 3-5 weeks we are regularly practicing with our friends in Houston. Often it's at 118's facility but last year we went to 624's home base and 5414's shop on different weekends. We have also been up to visit Texas Torque as well and practice with them. Those days are honestly some of my favorite days of the entire year. 2-6 teams just driving around having fun and working to improve during the season. You can't have that experience with out a practice bot (or at least most teams don't).
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Allen, that sounds like a great reason to build a practice bot.
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(There was also a 2015 version of Skystalker, but it was far less comical to watch). If you are lucky/guess right/use a similar chassis and drivetrain every year, there is nothing to prevent you from having a rolling base ready to go at kickoff. This (along with the ability to have design, fabrication, and driving experience carry over from season to season) is a huge reason why many successful teams do not tend to deviate a lot in drivetrain design from year to year. A "free" facsimile on day one! |
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But even disregarding the future on-field success, I thought it was really cool. It was a unique bonding experience for the teams in the region. Hopefully we will do the same thing in 2016 (2015's game didn't have quite the same dynamic, so most teams could practice alone). |
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Besides practice and development with the practice bot, we use the practice bot as a source of spare parts. It's stripped and then put back together for each competition.
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We had a great time practicing that day. Despite being spread out, CA's network of teams is one of our biggest inspirations/resources/motivations. -Mike |
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I answered #1 because it's closest to our reasoning, if not entirely accurate.
Our sponsorship resources have been generally rising year-over-year, despite a number of big "hits". On several occasions, our coaches, mentors, and boosters have explicitly considered "what do we add" nearly as seriously as we would address "what do we cut" if finding were to decrease. Each time, we have applied resources to both outreach and competitive capacity. On the competitive side, we did a "prototype" robot with a wooden frame in 2014, and in 2015, we did "twin" robots. Each of these gave us more driver practice than ever before, and better use of the withholding allowance to implement improvements worked out after stop build. While the second robot isn't strictly necessary to be competitive, we've found it to be a highly useful and cost-effective tool to help get there. |
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#1
The last week of build season, we decided to go ahead and build one this year for the first time. A materials sponsor came through for us by doubling their donation, so we could make it happen. We built an exact duplicate, minus outer coverings and a roboRIO (they shared to save money) in two days. It made a huge difference in our competitiveness, and we were much more successful than in previous years. It wasn't the only factor, more like one of three or four changes we made, but enough that we will definitely continue. |
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Edit: Ninja'd. Twice. |
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Deleted because the post seemed too rude.
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If you're going to make warnings, make them specific ;) It's legal at all times to walk into an event with a purely cots item, where I got that 5 mins prior is irrelevant. |
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No, none of the parts was machined, or otherwise modified from the COTS state. For the record, the "shaft" was actually a COTS bolt and nut. As a matter of fact, KoP COTS part, as it was from our KoP chassis. After popping out the bearings and taking the belt sprocket off, this was a pile of COTS parts. It took less time to put them back together than it took to get them off of the practice robot. We never intended (nor did) to use the practice robot for fabricated parts, but as a ready store of exactly the same COTS parts as we had on the competition robot. The handful of fabricated parts from the practice robot that we intended to use on the competition robot (mostly the pickup rake) were removed the night before competition and brought as part of the withholding allowance.
Appended: I had not read the 2014 Q&As, and was unfamiliar with the ruling referenced above; I was going purely by the 2015 rules and the Q&As which I saw for 2015. While I did not look at every Q&A as it happened, I recall going through the whole list of Q&As a few days before Bayou to make sure I hadn't missed something. I have again reviewed the 2015 rules, and still cannot find anything we did here which violated those rules. Here are some interesting and/or applicable quotes from the 2015 rules. The bolding (other than on the terms being defined) is my emphasis. Quote:
Please note that without the prepositional phrase in which it will be used on the ROBOT, each of these items would have been a FABRICATED ITEM. Not that it really advances the case much, but it is interesting to note that the "practice 'bot" is arguably not a "ROBOT" or even a "FABRICATED ITEM" by the above definition if it is not going to be used to compete in the current game. And, here are a couple of "blue box" items of interest: Quote:
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I fully FULLY agree that if the purpose of keeping the practice robot nearby were to harvest it for FABRICATED ITEMS, or if we had done so, it would have been against both the letter and the spirit of the rules. This was so far from my mind that it did not occur to me that it had to be explicitly stated in my earlier post. |
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EDIT: And you bet your butt that Team 900 knows this rule and has read it over a few times. The first step in pushing boundaries is knowing where those boundaries are. |
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[quote=marshall;1507367
EDIT: And you bet your butt that Team 900 knows this rule and has read it over a few times. The first step in pushing boundaries is knowing where those boundaries are.[/QUOTE] Just out of curiosity, what happened to team 900? Also, thanks for the information. I remember seeing that rule. Just forgot about it since all I focus on is scouting. That is definately an issue then. |
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It's interesting that with nearly 300 polled members still 90%+ of the teams have some interest in building practice robots. I would have thought with time such a large margin would erode. Guess it's either the composition of ChiefDelphi's active members or just not enough interest.
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Even with an extended build season we would build multiple robots. The practice bot gets way more run time than the competition robot and is falling apart by championship.
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There are exceptions to the rule (610 and 359 come to mind) but it seems pretty clear - the return on investment on a practice robot, given enough time and resources to use it, is a tremendous advantage. The number of people who aren't on CD, are on highly competitive teams, and don't build a practice robot, that number is really small. Maybe 10%? |
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I feel like the reason teams are successful without practice bots is because they come out in week 1 with a really really good bot or they really use Thursdays well in the pits. In districts, having a practice bot is very valuable since you can perfect mechanisms on your practice bot and make duplicates for your competition bot. Since you can unbag your bot for 6 hours in the week before a competition, having the practice bot to test new mechanisms takes less time of bag time to add new mechanisms.
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Makes a lot of sense, if you can build and test items on an identical robot and like how it works, you can then make duplicate item(s), un-bag and install it, quickly test it and bag 'er up! Love it! |
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