Time to Knock Down 10pt in Auto
 

For all the teams who are trying to knock off the 10pt ball during autonomous and for all the teams that have succeeded in doing so... how long does it take?

Re: Time to Knock Down 10pt in Auto
 

I would like to know the same thing. My team didn't have enough time to test the IR sensors, I have always been wondering if they work and how well.

Re: Time to Knock Down 10pt in Auto
 

~4.16 seconds... :D
Thats of course if all works well like it did at the test facility!

I heard that the fastest time so far was about 2 seconds.

Re: Time to Knock Down 10pt in Auto
 

IMHO, it dosn't matter. Unlike last year where to the top of the ramp ment points, I think speed to 10pt ball is useless. Life will not be easier if you get ther first or last.

Re: Time to Knock Down 10pt in Auto
 

Speed will be important to some strategies. Especially since the balls contol when the other balls drop I can see being able to control at least your side will be important. I'd have to as to see how fast ours was but I know it will be around 5 seconds as a rough estimate. That's being conservative though.

Re: Time to Knock Down 10pt in Auto
 

But... getting thier faster does leave you time to do other things or get in position for the drivers to take over. That's the plan!!

Re: Time to Knock Down 10pt in Auto
 

thats not entirly true; if you are a ball collector and someone knocks your ball off before you get into posting that could ruin your whole stratagy

Re: Time to Knock Down 10pt in Auto
 

Yar, our team got auto working the night before ship around 9:30pm... It took 10.5 seconds (after 3 trials). This was due to a little programming bug (robot turns around 360 in opposite direction instead of turning quickly towards the ball and was not at full speed in code). It should be down to < 7 seconds by regional since that'll be fixed. Regardless, speed doesn't seem very important.

Re: Time to Knock Down 10pt in Auto
 

Hmm, If i had to guess, the fastest time we will see will be around 3 seconds. Maybe we will see high 2 seconds, MAYBE. But I seriously doubt it.

I figure that it is about 30 feet from the wall to the ball, if a fast robot travels at about 10 feet/second, we're looking at about 3 secs.

We max out at about 8-9 ft/sec so it would take us about 3.5 secs to knock the ball off.

Everything depends on the form of sensing, line trackers will take the longest at about 10-15 secs, IR tracking will be about 8-12 seconds, inertial guidance will take about 4-6 secs (depending on the skill of the programmers) that will be followed by dead reckoning and encoder based systems which I will predict will be the fastest. This is all of course dependant on the skillz of the programmers and the hardware design.

I would guess, that depending on practice and skill, encoder and inertial systems will be tied for the fastest systems. Combinations of those systems will also be in contention for the fastest.

If that is our autanamous stratagy... :D

Good Luck!!!

-Andy

Re: Time to Knock Down 10pt in Auto
 

The ball is <24 feet. There are several robots that can go 15ft/sec +. So I expect to see several 2 seconds and possibly even a sub 2.

Re: Time to Knock Down 10pt in Auto
 

2 seconds would really be impressive

not only being able to move that fast from a dead stop

but being able to track the ball position while moving that fast, stay on course

and detect precisely when to trigger whatever it is that knocks the ball off.

Sounds like a good basis for an unoffical team sponsored award - fastest time to release ball - the silver bullet award :^)

Re: Time to Knock Down 10pt in Auto
 

So how fast does your team do it, Ken?

Re: Time to Knock Down 10pt in Auto
 

our carpet was a little short to have the right size on the field, so we never got an official time test

we will be there around 5 seconds - we are using the stock sprocket trannys this year - not real fast, but they do what we want.

Re: Time to Knock Down 10pt in Auto
 

As my good alumnist cliff put it, "we get there in 3.7 seconds only because we have to slow down to turn." From what you are all saying, it is pretty quick I guess.

Re: Time to Knock Down 10pt in Auto
 

About 3 seconds for us. Our carpet was slightely rougher than the FIRST carpet though and we will have to adjust the program a little.

Re: Time to Knock Down 10pt in Auto
 

Out of those who are knocking the 10pt ball of how many are knocking the ball out of play?

Re: Time to Knock Down 10pt in Auto
 

I'm not sure how fast ours can nock it off, but it's not slow. We're using the IR sensors, and we get it under 10 I believe. And that's only because we need to line up the arm with the ball. At the Upstate scrimmage we went to, 343 (Metal-In-Motion), had a great auton mode that worked really really quickly. I'm not sure what they used though.

Re: Time to Knock Down 10pt in Auto
 

Yes, we only have the capability to knock it out of play.

Re: Time to Knock Down 10pt in Auto
 

Is that 24 feet from start. Meaning one wheel over the line

Re: Time to Knock Down 10pt in Auto
 

On a direct route it is 23.88 feet from the wall to the ball tee. You are starting around 3 feet in front of that with a 36" robot. Your arm poker that is in front of you covers the other .88 feet so you only have to travel 20 feet. If your top speed is 15 ft/sec I imagine in a direct route you could manage to knock the ball off in around two seconds. There might be one sub two (1.9999 sec) and several near two (2.0-2.2) but I imagine it will be few in number. Less than ten definitely less than twenty. In the 1 to 2 percentile. I see more of the better autonomous mode being in the three to four range so that they don't just ram the ball off. Maybe someone can grab it in less than five or someone will do multiple task like knock that ball of and grab the 2x with 10 seconds.

Re: Time to Knock Down 10pt in Auto
 

3.4

Re: Time to Knock Down 10pt in Auto
 

Out of play I think. We could hit it in if we wanted but, nah.

Re: Time to Knock Down 10pt in Auto
 

Around 3.2-3.5 sec at our home practice field. Never really tried in comp. We dont want to endanger the arm so we use a piece of fiberglass. It wacks the balls out of play, but who cares about those things anyway? The 10 pts in not worth the effort.

Re: Time to Knock Down 10pt in Auto
 

All I can say for sure is that it can be done in 2 sec or less. If you are at a reigonal with the KillerBees (team 33) you'll see it. If you want to know how, look for the recent thread on transmissions. A 4 speed autoshifter, combined with a straight line auto mode, and the balls are on the field before the starting music is finished.

As to why, there are many strategies that depend on ball control, and if you can get there first you get the control.