How are you guys who are making a tray bot make the tray bend and or lock to not move back and or forward again just trying to get some ideas
Rubber bands should suffice, otherwise you would need to make a locking mechanism
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With most trays gravity will be on your side, which makes things easier. No locking mechanism is really required, just rubber bands. if you really wanted to, you could create some sort of latch, but its not necessary.
Here’s my implementation. The outside C channel is attached to one angle and has a screw joint to the other.
There are standoffs so that when the tray folds in the bands are extended as much as possible. The bands as well as the weight of the tray do much to fight against people trying to force my tray.
I would put a screw in the bottom c channel going outward which would snap into a groove on a small latch. I’m not too worried about the slop because the bands do well to negate that.
I’m not too worried about people pushing up my tray because I have a sharper angle on my tray in comparison to most teams. And if they try to push me they will struggle against the bands. They Can’t get good leverage near the pivot point and probably can’t get high enough to do any damage at the point furthest away.
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What do you mean by a bending tray, one that flips out when engaged by something?
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No. Trays are vulnerable to other bots going under them and pushing their foldout up, which can interfere with feeding and scoring by dropping cubes out and being a nuisance
Happy cake day @meepmeepme (that’s what the cake is right?)
Well, a lock could help, but a cube cage might also work.
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How do you get the tray to deploy and unfold when you want it to? I am planning on putting standoffs on the intake rollers that would hold down the tray when the rollers are folded in, but when they fold out the tray would deploy, and the standoffs would be facing outwards so it won’t interfere with the cubes. However, there are probably better ways that I could come up with once I put everything together and see what it looks like.
My tray will stay in the folded position by itself, and I use my preload cube to push the tray out until the rubber bands take over
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I wedge my tray between my rollers. The 3rd stage is held back by screws on the tip of my tray. My intakes are banded down
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That’s probably how I’m going to trigger my tray fold out. I’m just worried it might make auton inconsistent, but considering how I’m a simple tray, I dont really see any other options.
how would this make auton inconsistent?
To be honest, I have no idea, it’s just a concern right now. Not sure whether itll materialize into an actual issue
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with a longer tray the intertia of the tray deploying can move the bot, as well as the shock of it when it is fully deployed.
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Just a thought, but you could back up into the wall after unfolding to re align. I should increase your reliability, although it wont make it perfect since you will probably have some movement to the side (as opposed to just moving away from the field wall).
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