X-Drives can’t climb platforms? - Hold my beer
[UPDATE]: Tested parking with an alliance tree wedged in the middle of the robot. It was a struggle but it did eventually manage to park.
In all seriousness though, x-drives and platforms have a lot of complications:
Approaching the platform at a slight angle caused the drive to spin as the wheels leave the ground at different times.
There was noticeable wheelspin while climbing. This is the first robot to use that platform and the wheels are only one season old. As the platforms and wheels become less grippy the chances of successfully parking will decrease significantly.
I could not get a tree to balance on the robot long enough to see if it could climb the platform with the extra weight. My best guess would be that any complete x-drive robot will only be able to park itself without carrying any trees.
Sketch on the face of the sprocket to the cup of a tooth, expand that by a mm or so, extrude the two sections, loft to join the two sections, mirror to the other side of the sprocket, mirror round the other sprocket, then make a circular pattern.
wait, what? How do I create a sketch on the sprocket that folds the same shape as the curve and how do I angle it at each groove so that it is the correct angle?
Create a sketch on the face of the gear (circle with Y shapes off it). Project the necessary bits of the tooth curves into the sketch. Draw the straight lines. I guess ideally I (or whoever) would record a screen cap tute of the process if it’s a Fusion familiarity thing. I can’t do that just now, and won’t promise. Maybe that should be its own post somewhere off the TP specific stuff. In the meantime, just drop in a cylinder that indicates the swept surface of the bands. Set its transparency to something helpful, possibly in the region of 30%. You could equally drop thin cylinders roughtly where the bands would be between the gears in a circular pattern. They don’t have to be flat straps for illustration purposes.
Can we use digital notebooks this year for Tipping Point? I read a forum and there was debate about whether or was legal or not and if Vex has said anything yet.
and the Q&A says you are responsible for the game objects your alliance placed still being under the platform in the last 30 seconds of match, even if the opposing alliance had ample opportunities to remove it. https://www.robotevents.com/VRC/2021-2022/QA/813
So this Q&A states that the tiles are not a 3D box, but simply the plane, meaning that for goals to be scored, they have to be touching the tiles or they have to be balanced, and this Q&A states that there’s no elevation points at the end of autonomous, but if one were to balance goals at the end of autonomous, would they still get the 20 points that you would get for scoring on the gray tiles, or would you get nothing?
A goal on a balanced platform at the end of the autonomous period is probably worth nothing.
If you look under scoring, a goal can only be scored in one of two ways:
In a home zone (contacting the tiles, as clarified by the Q&A)
Elevated on a balanced platform
If you look closer at the definition of Elevated, the key phrase is:
A Robot or Mobile Goal is considered Elevated if all of the following criteria are met at the end of a Match:
Key words here being at the end of a Match. The end of the autonomous period is not the end of a match. Therefore, a Mobile Goal cannot be elevated at the end of the autonomous period.
In general, don’t be afraid to go down the rabbit hole of looking up each definition in turn to see exactly what they say.
actually, I believe a goal on a balanced (or unbalanced for that matter) platform at the end of auton is worth 20 points for being scoring in that alliances home zone.
You are correct to say that it’s not worth any points for being elevated, since it does not meet the definition for elevated. However, it does meet the definition for being scored in that alliance’s home zone, since the platform is considered part of the home zone. Goal does not have to be touching the tiles, since the platform (and tape lines) are also considered part of that home zone surface.
Has there really been anything that definitively states how unbalanced platforms are scored? From what I understood, an unbalanced platform meant that you just get no points for the mobile goals, but looking back, there doesn’t really seem to be anything really definitive on the topic. If all you need to consider it “scored” is touching the platform or the gray tiles, couldn’t you theoretically just put the goal up against the platform on the outside, while holding it, and have it considered scored?
if a goal is on the platform and it is not balanced, that goal is worth points for being in that alliances home zone, but it’s not worth points for being elevated (since it’s not meeting the definition)
yes, if you touched any part of the base of the goal to any part of the platform, it would be considered scored in your home zone (but not elevated)
Good catch. I guess I didn’t follow the rabbit hole deep enough. The one key limitation I see in that issue is that transitive contact only applies to a Balanced platform. As a result, the base of the goal has to be actually touching the platform for that to apply. Holding the goal and being on the platform isn’t enough.
Grant (not tagging) announced that the definition of the home zone will be changed to a 3D plain instead of just the tiles. If any part of the mobile goal base is within the alliance home zone it will be scored, including on an unbalanced platform.
There hasn’t been clarification yet, but I do believe it’s just alliance rings (I think an admin agreed somewhere but I can’t remember), because the goals can’t be scored per the definition “end of the match”, whichever thread that was discussed in.
this is quite a big change actually because it means a robot doesn’t have to set down a goal or touch it to the platform for it to be counted as scored, which means a goal lift that is a one time deploy is viable. so a passive goal lift is completely viable now imo if you use it on a goal you never want to set back down (like the tall neutral goal)
