I Still Haven’t Found What I’m Looking For

Posted: February 13, 2014 in Fridge Note, Shovels, Thread Open; have at it.

Busy, me.  Robots, you know.

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We had a couple of minor setbacks and had to relocate the components and re-wire the thing.  Finishing catapult on Saturday, Scrimmage on Sunday and Stop-Build on Tuesday.  Will be back to normal, or as normal as I get, later next week.

As usual, I apologize for any inconvenience or anger this engenders.

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Comments
  1. mikey says:

    I don’t think I ever asked – what’s the onboard processor/RAM/Storage Programming Language environment for those things?

    • You’re such a gearhead.

      It’s a National Instruments cRio with breakout modules. If you look at the upper photo, the grey box on top right is the unit. This is the one we’re using this year. This is the unit we’ve used in prior years, but since we usually only use three modules, it’s way more than we need.

      You can see them using these things on Mythbusters occasionally. Sometimes they’ve even had a NI geek along to set up the data acquisition.

      We use NI’s LabView software for programming. Although these are intended for data acquisition, they work fine for the simple levels of programming and control we are performing.

      The cRios, of course, will support whatever language you load. Some teams use C++, but a fair number have gone to programming in Java.

      Last night, we lost the power connection plug to the damn cRio. Which poses a significant problem, since it is the first time we’ve used this model, it is OF COURSE a different little dongle than the other model, and we don’t have a spare. After a fair amount of panic, blame, personal abuse and physical assault, we found it under a robot wheel.

  2. I’m assuming that’s pneumatic actuation stuff for the catapult and the drive is electric?

    Since you can’t have rotating knives, it could at least have a speaker to talk smack to the other robots. “Was your mama a vacuum cleaner? ‘Cause you suck!”

    I know, I know, “friendly competition” “kids” yadayada. Phooey.

    • we couldn’t get pneumatics to operate fast enough for the catapult. the spring assembly delivers the energy to loft the tater. the compressed energy is between 300 and 400 pounds. It’s actually quite alarmingly dangerous.

      The pneumatics operate what we have called the Yoke, to deploy the wheels that draw the tater into yoinking position. We are also using pneumatics to re-cock the catapult and trigger it.

    • Cool, that makes sense.

      It’s actually quite alarmingly dangerous.

      Yeah, I bet!

    • mikey says:

      You could tack a little striker on the catapult part and mount a cowbell above the stop block so you could get a sound that everyone in the venue would notice. Branding, dontchaknow…

    • I like the way you think. However, not only do the rules restrict the use of any mechanism using noise, lights, flames, or other things that will tend to disrupt and distract the other teams, you misunderstand the level of noise on the field. It’s VERY loud.

      Although we released the catapult in the shop last night, and it makes a really loud CRACK noise on it’s own.

  3. herr doktor bimler says:

    I was told there would be trebuchets here.

  4. herr doktor bimler says:

    I Still Haven’t Found What I’m Looking For

    Inevitably, I prefer the Wire version:

    I’ve found something. No one else is looking for.
    I’ve found something. That there’s no use for.
    And what’s more. I’m keeping it to myself.

Go ahead, tell me how I fucked up this time.

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