I think what teams should do is find a way to automate NOT getting 4+ discs. I may use a limit switch, though that might not be the best way to do itā¦ a color sensor is so expensive too. maybe an ultrasonic? The no 4+ Discs rule I feel is quite limiting, i think it shouldāve been at least 4 or 5. But then again, thereās only 60 discs on the fieldā¦ I just donāt see this game being as offensive as the creators wanted it to be. Anyways, automating the discs will probably lead to much less calls by the referee, and therefore give you a better chance at winning. Especially if youāre doing a turret design.
Yup, good idea. Years past teams have used line trackers to identify if an object is in a location. Basically a touchless touch sensor ā an object directly in front of the sensor blocks light and that signal can be used to stop the intake system.
Limit switches or line sensors can be used to detect the position of multiple discs inside the robot, just like what teams did in Change Up and Turning Point.
Iām Dan from 46P. The only competition this bot competed at was worlds. Before worlds, we replaced the offending c-channel with uncut half c-channel.
Will skirts be necessary?
Also do I need a piston to raise the skirts/intake to drive into the low goal?
What is a skirt? sorry iāve never heard this term used before.
Itās where you have a short sheet of plastic across the bottom of your robot. They were used a lot in Tipping Point to keep rings out of under the wheels.
okay thank you!
no. they wont.
I wouldnāt be so definitive about this, while I think the rings where more annoying the disks are really easy to run over and could throw off launchers. Are they necessary? probably not, but are they going to be useful probably.
I feel like skirts will be fairly important. Since discs are flat, the intake is going to be quite low to pick them up, so itād be possible to get stuck on a disc underneath the intake.
The only tradeoff to having a skirt is that you can get stuck on the low goal guide things, but since itās still possible to drive in through the edges, it should be fine. Iād prefer having to do that over getting stuck on a disc.
Also skirts allow you to push around discs out of reach of opponents easier
The discs might affect odometry for turrets, so skirts should still be important.
One thing I think most turret people are overlooking is, with a X drive it can rotate all the time so if you program it right you hold a button and it auto locks onto the goal, rotates and changes speed/angle, whatever flywheels system you want to use and you could still have X,Y movement without angle movement /with angle movement changed by the code looking at goal because your moving
Yep! Shameless plug but x drives are amazing in that it can rotate while moving as seen here
One question Iāve had about odometer is why 3 of them if you have X axis with one and Y axis. Why do you need 2 of them in the same Direction
The two parallel wheels are used to measure the heading of the robot. This can be replaced by the inertial sensor which can provide the same data without the need for a third wheel.
So, if I use an inertial, I only need one wheel for x and one wheel for y?
Yes, that is correct.
Ohh okay thanks, I am in the process of cadāing a X drive and didnāt know Iāll just have to put in a inertia sensor
This sounds like field oriented controls mixed with constant targeting of the high goal, which makes sense, but I feel like speed is important, and even if you have an X drive with fast turning, a turret makes the shooting cycle faster, so I think the teams that can make working turrets are going to be strong, and might become the meta