Hanging robot staying hanging

VEX V5 Technical Support
1

Im trying to make my robot hang. But when the game ends the motors “power down” so the robot drops down. How can i make the robot keep hanging when the game ends?

2

Install a ratchet or locking mechanism, your motors will always disable at the end of matches.

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3

Hi! This question has been asked before on the forum, so I would recommend searching it up and see if it helps to answer your question.

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4

You can use a rachet or some sort of passive lock. There are plenty of resources online for how to make either of these.

5

You could make some sort of ratchet or pneumatic clamp.

6

Try building a ratchet mechanism to hold up the robot whilst it is not powered. A good starting pint would be this: https://youtu.be/VskZwlPGRRg?si=r8jSrj2a6PXQzC28

7

the problem with this is is that it can only go one way so i cant move arm up and down!

8

That is why it is helpful to install a locking mechanism other than just a passive ratchet, maybe something on the body of the robot that clamps onto the arm when you tell it to. There are many good ways to stay hanging as robots have had to elevate many times before.

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9

This may be too complicated, but you can create a ratchet and have a piston power something to make it come together, so you can click a button on your controller, or have it done in your code, so once you want to, the rachet will start working.

10

Another option to consider would be using a worm gear, as the mechanism can’t be backdriven, however worm gears have low efficiency and are tricky to mount.

Although it isn’t a locking mechanism, you should also consider using rubber bands to reduce the stress on the motors, allowing them to hold the drive up even when not powered, similarly to what is shown here https://youtu.be/WDS0q0ZtknE?si=QJtp1Jmfa_2WxY-5.

I would urge you to test these methods for yourself, as they all have pros and cons.

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11

I also had this question so here is the topic I created a lot of people gave great advice.

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