[127X] 7 Cones From the Field in 19 Seconds

We redid the top of our robot. It’s much faster, as you can see. https://youtu.be/5yqbPt2nLfA

Looks good! What changes did you make to make it faster?

It’s a shorter chain bar (as opposed to the longer four bar) mounted farther forward. It’s more level and it’s 1:3 turbo instead of 1:3 speed (or maybe 1:3 torque in the last video of our other bot, I don’t remember when we changed it). Plus, the roller is much lighter because it uses less metal and most of its screws are aluminum and the locknuts are half thickness.

It is far more stable and consistent, enough so that I actually have the cone automatically drop now, too.

@Aponthis How much time has your driver had for practice? It looks like they (I’m assuming you) really has stacking on point. Do you have autostack?

You assume correctly. I have been driving robots in general for four years, so that experience adds up. But, I probably have 20 hours of experience driving internal stackers. You should know that I only press one button to stack, though. It’s basically automatic.

One thing I struggle with (I’m really new to driving robots) is when I’m trying to pick up a cone that is directly in front of the robot when the robot is facing away from me. The issue is I can’t see the cone I’m trying to pick up. In some of your videos I have seen that you’re quite good at doing this. Do you have any tips regarding this?

8373H tried to replicate the zip-tie claw on 127A’s (I think it was) bot. it didn’t work as well as we’d hope

It was 127X (we switched designs). 127B currently has one that is better in some ways and worse in others… We will see how it goes for them. I gave them a lot of advice on it.

It’s not easy, but the only tip is that you need to know where the cone is on the field in relation to everything else before you lose sight of it. Then, you know where your robot is in relation to everything else and where the cone is in relation to everything else (especially tiles)… So you can figure out where your robot is in relation to the cone. It becomes second nature with practice. Basically, figure out where the cone is before you lose visual contact, and remember.

ah. we’ve moved on from that to a mogo lift cause our normal lift kept having problems

What’s your lift ratio?

Also how long is your chainbar now?

DR4B is 1:5 speed, chain bar is 1:3 turbo.

I can’t remember but am going to guesstimate 8 inches. My guess is as good as yours, but specifics don’t matter unless you’re reconstructing my whole robot. (Based on YouTube comments, some people would like to.)

No, I just wanted to know so I could do a comparison to see how fast I could get our chainbar to go, as it is currently 10 inches.

We did totally convert our intake to your guy’s cool thing that rolls right over and onto the cone, though.

I didn’t mean to imply you were copying my bot, of course. I was just making a joke. Experimenting will be your best bet for optimizing your specific robot. Bear in mind that the aluminum screws make our rollers really light, too.

These rollers don’t actually roll over cones quite as well as the other ones, unfortunately, so we will probably just be dropping down on cones…

What I’m trying is just using rubber bands and having the front one have loose rubber bands while the back one has really tense rubber bands. I’m hoping it will allow it to roll over the cone really easily but still be able to hold it in the intake well.

I didn’t do anything special. It probably helped the the intake flipped down and was held down only by gravity, though. Also, the speed of the rollers is super important.

I actually pulled together a few autonomous routines!!!