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PLP Robot --> Build Thread — Parallax Forums

PLP Robot --> Build Thread

ScopeScope Posts: 417
edited 2010-06-02 02:39 in Robotics
Can anyone help me understand the HB-25 connection w/the BOE?

Does this look correct?

I can't tell anyone what "PLP" stands for - it's a secret, but Whit knows.

Thanks,

Scope

Post Edited (Scope) : 5/13/2010 1:27:31 AM GMT
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Comments

  • WhitWhit Posts: 4,191
    edited 2010-04-07 02:50
    Scope,

    Looks correct to me. You are running the HB-25 in mode 1 according to your drawing/pic - so the jumper on the HB-25 is in place - yes?

    As far as the secret - anything·confessed to a priest must remain confidential. wink.gif

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    Whit+


    "We keep moving forward, opening new doors, and doing new things, because we're curious and curiosity keeps leading us down new paths." - Walt Disney
  • ScopeScope Posts: 417
    edited 2010-04-07 03:03
    Thanks!

    Wednesday, I'm going to request a project number for the 2010 RF Design Contest.

    I believe when this project develops I may end up going with the Propeller however I'm going to get the ball rolling with the Stamp 2 (sorry the Stamp didn't show up in my image above - I was in a hurry).

    Scope
  • ercoerco Posts: 20,256
    edited 2010-04-07 16:05
    Propeller-Loving-Priest, I'll bet.

    ▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔
    ·"If you build it, they will come."
  • ScopeScope Posts: 417
    edited 2010-04-07 16:27
    LOL!

    No, not even close but very good guess.

    I'll send you a PM
  • W9GFOW9GFO Posts: 4,010
    edited 2010-04-07 18:00
    Scope said...
    Can anyone help me understand the HB-25 connection w/the BOE?

    Does this look correct?

    You don't need the red wire that goes from the BOE to the HB-25.

    You probably already knew that...

    Rich H

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    The Simple Servo Tester, a kit from Gadget Gangster.
  • ScopeScope Posts: 417
    edited 2010-04-07 18:35
    No, I did not know that but mega-thanks Rich for the heads-up.
  • WhitWhit Posts: 4,191
    edited 2010-04-07 19:39
    Scope,

    I just figured you were using a standard three wire·servo connector - the red wire spot on the HB-25 is not connected to anything. It shows that in the documentation. W9GFO (Rich)·is correct - no wire is required, but a standard three wire connector can still be used and is probably easier. Likewise - the jumper on the BOE for·Vin or Vdd doesn't matter either, becase the red wire pin is not connected on the HB-25.

    @erco - while your answer for meaning of PLP is true - it is not what Scope is referring to - Now - back to work you trouble maker! wink.gif

    ▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔
    Whit+


    "We keep moving forward, opening new doors, and doing new things, because we're curious and curiosity keeps leading us down new paths." - Walt Disney

    Post Edited (Whit) : 4/7/2010 7:48:15 PM GMT
  • ScopeScope Posts: 417
    edited 2010-04-07 21:17
    Ok, thanks Whit

    My request for a project number has been completed & submitted.

    I think I'm biting off more than I can eschew.

    Or something like that.

    Cheerios!
  • ScopeScope Posts: 417
    edited 2010-05-08 20:28
    Making progress . . . but slow . . . (first photo, the PLP is upside down) . . .
    bw_plp_truck_030.jpg
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  • ScopeScope Posts: 417
    edited 2010-05-08 22:36
    . . . a bit more . . . I still haven't decided whether or not to use the Propeller or the Stamp . . . ya, you knew the foam was coming . . .
    bw_plp_truck_037.jpg
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    bw_plp_truck_038.jpg
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  • Martin_HMartin_H Posts: 4,051
    edited 2010-05-08 23:28
    Well what ever it does it is looking pretty neat. It looks like either a monorail or a downspout/gutter cleaning robot.
  • ScopeScope Posts: 417
    edited 2010-05-08 23:37
    Thank you.

    Excellent guesses . . . no, and no.
  • Tony B.Tony B. Posts: 356
    edited 2010-05-09 12:39
    Scope,

    You install gutters and you’re going to use it to accurately feed down spouts to your cutoff saw in the exact length you tell it too by RF?

    If not, it still looks intriguing.

    Tony
  • ScopeScope Posts: 417
    edited 2010-05-09 16:40
    LOL

    No - another great guess
  • Phil Pilgrim (PhiPi)Phil Pilgrim (PhiPi) Posts: 23,514
    edited 2010-05-10 02:52
    A server 'bot for a sushi bar?

    -Phil
  • ScopeScope Posts: 417
    edited 2010-05-10 11:36
    Um . . . no . . . interesting guess though . . . does give me ideas . . . hmmmm . . .
  • ScopeScope Posts: 417
    edited 2010-05-12 22:44
    Here's the beginning of "Prototype 02" . . . you knew foam would be involved, eh? roll.gif
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    bw_plp_truck_105.jpg
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  • ScopeScope Posts: 417
    edited 2010-05-13 01:08
    Testing fit of parts before assembling "the box" . . . I can't remember why I called it that . . . hmmm . . .
    bw_plp_truck_110.jpg
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  • rpdbrpdb Posts: 101
    edited 2010-05-14 01:11
    Is it a mono-rail tractor travelling on gutters for a rail, for passing out papers?

    rpdb
  • ScopeScope Posts: 417
    edited 2010-05-14 02:33
    No, but your guess is getting closer.

    Wandering around Home Depot I discovered a plastic gutter has a fairly impressive strength to weight ratio and I needed a 12' lightweight beam. Ya, the "box" will be traveling on the gutter . . . but why?

    Clue: The gutter beam will be moving.
  • Phil Pilgrim (PhiPi)Phil Pilgrim (PhiPi) Posts: 23,514
    edited 2010-05-14 03:13
    Ah HA! You left bread crumbs in the forum, which I now remember: http://forums.parallax.com/showthread.php?p=877481. Still, though, your students might appreciate a nibble of sushi now and then. smile.gif

    -Phil

    Post Edited (Phil Pilgrim (PhiPi)) : 5/14/2010 3:18:02 AM GMT
  • TinkersALotTinkersALot Posts: 535
    edited 2010-05-14 03:28
    Don't know what it does, but it occurs to me that something like this with a camera transmitter on it would make a nifty "under roof/eaves mounted" security sentry system. I've often wondered about something like that, but had a hard time figuring out how to drive such a beasties; But your drive system seems like a pretty good idea for that kind of thing. Close at all?
  • ScopeScope Posts: 417
    edited 2010-05-14 03:29
    No - the PLP is a completely different project though I can see some similarities with the CMRS (Ceiling Mounted Rail System).

    Think outside . . . as in parking lots & lawns.
  • Phil Pilgrim (PhiPi)Phil Pilgrim (PhiPi) Posts: 23,514
    edited 2010-05-14 03:37
    Striping comes to mind for parking lots, although few lawns that I know of include yard lines. Peripheral Lawn Patrol? "Keep off the grass, please. I am laser equipped. Keep off the grass, please, or you will be evaporated! In 5 ... 4 ... 3 ... Thank you, and have a nice day!"

    -Phil
  • ScopeScope Posts: 417
    edited 2010-05-14 03:45
    Ok, I'll spill the beans "PLP" = Project Lawn Printer, which can also be used to deploy media (water based paint?) to "print" text/graphics on just about any surface, not just lawns. It utilizes a 12' boom and can make several parallel passes for "large" images.

    It's going much slower than I'd anticipated. I'm planning on using the modified E-Maxx for the tractor. I plan on using RF, to control autonomous and semi-autonomous modes of operation.

    Slow, frustrating at times, but overall, it's a very fun project.

    Thanks for Whit not telling anyone (ha).
  • Phil Pilgrim (PhiPi)Phil Pilgrim (PhiPi) Posts: 23,514
    edited 2010-05-14 03:55
    Oh, cool! How many jets will you be controlling at once?

    -Phil
  • ScopeScope Posts: 417
    edited 2010-05-14 04:22
    Phil Pilgrim (PhiPi) said...
    Oh, cool! How many jets will you be controlling at once?

    -Phil

    Prototype 02 will only employ one - if . . . er, when that is operational, we'll move to either dual trucks (?) &/or multiple media per truck.

    I also thought of doing one with the Kansas Dot technique - boom swings around a post as media is disbursed. I was flying over Kansas and saw many of those dots. The x/y system seems to be simpler in most ways.

    Currently, I'm using the nozzles and thin tube nozzle extensions from cans of WD-40 onto paint cans w/high torque servos serving as actuator mechanisms. It's a messy learning curve.

    My primary goal is simply to develop a working model - from that, I'll begin developing and ironing out the many details/shortcomings.

    I also haven't decided on Stamp vs. Propeller. I am not very good w/Spin Tool. Geeze, I'm not very good w/PBASIC either, now that I think about it.
  • Tony B.Tony B. Posts: 356
    edited 2010-05-14 08:31
    Scope,

    What a great idea! My mind is a buzz with ideas an issues that will need to be solved. Looking forward to your progress.

    You mention the "Kansas Dot Technique". Do you mean the device paints large circles/dots in yards? What are the dots for?

    Tony
  • ScopeScope Posts: 417
    edited 2010-05-14 12:06
    Tony B. said...
    You mention the "Kansas Dot Technique". Do you mean the device paints large circles/dots in yards? What are the dots for?

    The "dots" are created by the farms that use rotating irrigation systems - I guess there's a better way to describe them but they look like dots from 32,000 feet. cool.gif
  • Phil Pilgrim (PhiPi)Phil Pilgrim (PhiPi) Posts: 23,514
    edited 2010-05-14 17:20
    It's too bad the original Homestead Act didn't create hexagonal sections, rather than square ones. That way the circles could have been packed more tightly, resulting in yet more arable land. (I guess they were still thinking about efficient plowing with horses back then, not to mention simple surveying.)

    For a circular scan, there's always this technique: hackaday.com/2010/04/26/lawnmowerstakeropeanalog-robotic-lawn-service/.

    -Phil
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