Re: IRI - 2014 Team Invitations
 

We did this back in 2003 so our robot could sense collisions in autonomous and shift to low gear to push (you'll have to find some videos of 2003 to see why this was important that year).

Back then there were no bumpers on robots so the collisions easily saturated the 100G accelerometer we were using. I would love to repeat this with bumpers.

Re: IRI - 2014 Team Invitations
 

I imagine you could extrapolate crash g's (decelleration) from the graph of the wheel encoders, as long as the crash was in the direction of travel. How accurate could that be?

Re: IRI - 2014 Team Invitations
 

The dt of a drive encoder is on the scale of 0.1 ms (360 ticks/rev encoder 1:1 on 4 inch wheels at 20 ft/s), so the largest acceleration you could meaningfully measure would be something around 20 ft/s / 0.1 ms = 200000 ft/s^2 which is about 6000 G's. However, this response would have to take place in the FPGA, which the cRio is not currently programmed to do (the encoder rate is also computed in the FPGA, built-in to the image provided by FIRST - WPILib just pulls this value). Outside the FPGA, the response time is more like 10 or even 100 ms, limiting your accel to 60 G's, or perhaps even just 6 G's.

Re: IRI - 2014 Team Invitations
 

We'll be representing West Virginia with pride! I'm so excited and really hope I can make it to either volunteer or travel with MARS!

Re: IRI - 2014 Team Invitations
 

It is with much disappointment that 2848 is not going to be able to attend IRI this year. We wanted to go so badly to play with many friends again, but there were a number of circumstances that are keeping us away.

Good luck to all the teams competing and we will be routing specifically for our fellow world champions 254, 469, and 74 and our Texas friends to bring it home.

Re: IRI - 2014 Team Invitations
 

We just learned today that Shockwave WILL be going to IRI! PNW and Oregon represent!

Re: IRI - 2014 Team Invitations
 

Sadness. We will miss you!

Re: IRI - 2014 Team Invitations
 

The Roboteers are stoked to be attending IRI this year! We are looking forward to seeing all of our friends who we've competed with in the past and making new friends from the amazing teams that we haven't had the privlidge to work with yet. It will be an honor, as always, to work with all of you! Should be an amazing time!

PS - We've got a dream of seeing an all swerve drive alliance in action...hopefully we'll get the chance, at some point, at IRI. ;)

Re: IRI - 2014 Team Invitations
 

3467 will regretfully not be able to attend this year! :( We had such a blast last year and wished we could make the trip again to play with the amazing teams at IRI this year. We hope we can make it back next year!

Best of luck to our fellow friends from New England: 125, 175, 195 & 20 (who we'll count as NE since they've competed here forever ;)).

Also good luck to our fellow partners from Archimedes 1477, 1625, & 2590! Three utterly amazing teams on and off the field and we wish you the best! :)

Re: IRI - 2014 Team Invitations
 

I feel like i'm holding back tears right now :'(

Re: IRI - 2014 Team Invitations
 

Don't make me start crying! :rolleyes: This means 195 needs to sign up for River Rage so we can play again. Or you convince us to come to Bash! ;)

Re: IRI - 2014 Team Invitations
 

This needs to happen.

I'm disappointed Windham can't make it. Your robot was certainly one of a kind.
:)

Re: IRI - 2014 Team Invitations
 

399 sent in their acceptance!

This is going to be a wicked good time. We're excited :)

Re: IRI - 2014 Team Invitations
 

610 will have to respectfully decline our invitation. We will be cheering on our fellow Canadians, honorary Canadians 1477, and all of the teams we traded paraphernalia with at champs, specifically 16, whose lanyards are worn proudly by many 610 students around school :] Apologies to the anonymous awesome team whose spot we took.

Re: IRI - 2014 Team Invitations
 

Team 359 has paid and officially ready to go!
Airfare, hotel, rental cars all booked!