Getting the Totes Right Side Up from the Chute Door
 

I've seen that some teams could get the totes right side up out of the tote chute. Normally totes tend to fall over when they fall on the carpet and there is obviously a technique to prevent that.

Can someone explain what are the methods in order to achieve that?
Thank you!

Edit:
I guess I didn't explain my intention well enough,
What I intended was getting the tote right side up without touching the robot (only the carpet)
You can see it very well in this video: https://www.youtube.com/watch?t=45&v=oiOZN4G4OxI
Look at the bottom right feeder (red side). Team 548 get the tote right side up every time.

Re: Getting the Totes Right Side Up from the Chute Door
 

We have a lip extending out from our frame to "catch" the front edge of the tote before the tote hits the floor. We back up slightly and the tote falls upright.:) :)

Re: Getting the Totes Right Side Up from the Chute Door
 

Hi, there are a few techniques that I've seen.

Some teams are building ramps, which they tether to their robot, so the totes slide nicely into the field.

Some teams push a tote - often one of the yellow totes - up to the chute door. (yes, chute door) The long side of the tote is against the wall. This creates a ramp of sorts, and totes generally bounce over the "ramp tote" and land upright on the field. It does not seem 100%, but it works pretty well.

I've not seen this myself, and my team didn't play with it since we have a slide built into our robot, but I've read that some teams will, as the tote is sliding down the chute, lower the door onto the top of the tote before it exits the chute - and are able to bump it in such a way as to help it land upright.

Hope that helps!

Steve

Re: Getting the Totes Right Side Up from the Chute Door
 

We have an actuating claw for our lift, so we line up at the feeder station, and close the claw on the tote before it hits the ground, open, and it lands flat. It has worked every time, providing we are lined up with the chute door.

Re: Getting the Totes Right Side Up from the Chute Door
 

What we do is set our robot a little ways away from the door, and then just let the tote fall naturally. The front hits our robot and the rest falls back onto the ground level and ready to be picked up. It might be a little slower than using a ramp, but it saves weight and has yet to fail us once.

Re: Getting the Totes Right Side Up from the Chute Door
 

Our team discovered this by accident. If our grabber is closed, the tote will land on the grabber. Then the driver opens the grabber, and the tote lands on the floor right side up. Then the driver can grab the tote correctly.

Re: Getting the Totes Right Side Up from the Chute Door
 

Our team has a method that I haven't seen many others use in the form of a conveyor belt through the middle of our robot. We load totes into the back of the robot and they slide out to the front where our stacking mechanism is located. We also have two rails that actuate in and out (one on each side of the tote) to re-align the tote if we didn't back up to the chute perfectly square.

Re: Getting the Totes Right Side Up from the Chute Door
 

Thanks for all the comments!
But I guess I didn't explain my intention well enough,
What I intended was getting the tote right side up without touching the robot (only the carpet)
You can see it very well in this video: https://www.youtube.com/watch?t=45&v=oiOZN4G4OxI
Look at the bottom right feeder (red side). Team 548 get the tote right side up every time.

Re: Getting the Totes Right Side Up from the Chute Door
 

I don't know how they are doing that in that video but at 10k lake I saw a team able to do that too. Their human player would barely put the tote in the chute then let go of it and open the chute door before the tote would hit the door. This allowed the tote to gain enough speed to not tip on its side. I asked the head ref about it and he said it was a grey area.

Re: Getting the Totes Right Side Up from the Chute Door
 

I was intrigued also.

I am uploading some close up videos from Bedford.

2015 Bedford FRC548 HP Tote Loading
548 does not use a ramp. I think I saw one tote that did not land flat.

2015 Bedford FRC 2137 HP Tote Loading

Re: Getting the Totes Right Side Up from the Chute Door
 

Hi, as far as getting the tote to land perfectly without it touching anything but the chute, I'd say it comes pretty much down to luck. Our human tried a lot of different things like angling the tote in the chute and hitting the tote with the door on the way out to slow it down. None of these techniques yielded a desirable outcome. :/

However, we are able to get the totes out of the chute perfectly every time without touching them with our robot. Well, technically it does touch our robot. We built a table that sits in front of the chute that catches the totes and lets them land perfectly every time. This table is tethered to our robot so we can move independently from it #teamtether. We call it "El Stackador"

https://drive.google.com/file/d/0B8z...ew?usp=sharing

Now, obviously this won't work for you if you are usually picking up from the ground. What you might want to try is building just the top of the table and sitting it on the ground where the totes land, possibly with an open front if your robot sucks the totes in from the front. I know team 3310 has a similar mechanism that acts like the top of our table, but it fold down from the front of their robot.

Good luck,
-3481

Re: Getting the Totes Right Side Up from the Chute Door
 

Our Human player does this. What he tells me is that he lifts the chute door, lets the tote slide out, and hits the tote really hard with the chute door on the back end of it (he estimated about the last 1/4th of the tote). He was pretty good at it, I would say he got them right side up 80% of the time. Its really all about timing.

For me however, even 80% of the time wasn't reliable enough, so we ended up going with a ramp, but its up to you. Hope this helped!

Re: Getting the Totes Right Side Up from the Chute Door
 

I've seen teams slam the chute door down on the back end of the tote as it's exiting the chute. It seemed to be effective in getting the tote to land in a nice orientation.

Re: Getting the Totes Right Side Up from the Chute Door
 

That's the technique we use. We hit the last few inches of the tote as it exits. Use just a bit of pressure. The tote will nose dive if you hit it too early or too hard.

David

Re: Getting the Totes Right Side Up from the Chute Door
 

It's not luck; it's practice. There are actually [at least] two main methods, one faster than HPs typically go and one slower. Neither involves violating G5, G6 or any other rules. There's no visible delay in overall throughput between them, though in reality there probably is some incremental difference. Personally I find the slower approach easier and more consistent--actually, I had trouble making totes land on end that way--but I know people who can do the faster approach all day long.

Actually, on looking at the 548 video, I'm not sure he's doing either approach I mentioned. (Though he may be; it's hard to tell.) So maybe there's more than two approaches.