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So what robot is that? - Page 2 — Parallax Forums

So what robot is that?

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  • TimmooreTimmoore Posts: 1,031
    edited 2009-07-01 22:21
    So you want the rollers at 45 degree. Looking at the picture of the wheel again, it doesn't look to me that the rollers are skewed, it looks like there are 2 rows of rollers. The 2nd row are 45 degrees offset but the individual rollers look flat so I dont think they will do what you want.

    Just found them by accident on mcmaster.com part no 2289T3, they have other sizes as well.

    Post Edited (Timmoore) : 7/1/2009 10:47:50 PM GMT
  • John R.John R. Posts: 1,376
    edited 2009-07-01 23:10
    Timmoore said...
    So you want the rollers at 45 degree. Looking at the picture of the wheel again, it doesn't look to me that the rollers are skewed, it looks like there are 2 rows of rollers. The 2nd row are 45 degrees offset but the individual rollers look flat so I dont think they will do what you want.

    Just found them by accident on mcmaster.com part no 2289T3, they have other sizes as well.

    Thanks for finding the McMaster Carr reference.

    Correct, the wheels on the Parallax model and at McMaster Carr do not have the rollers "skewed" but "staggered". However, the rollers themselves look like they could be relatively easily adapted to the "macanum" configuration on a home made hub. I may order a few of the smaller sets from McMaster to try out.

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    John R.
    Click here to see my Nomad Build Log
  • TimmooreTimmoore Posts: 1,031
    edited 2009-07-01 23:28
    If you want to try mecanum without the cost you can do what I did. I built a octagon shaped base. Put 4 omniwheels in each corner and drive all the wheels together. Gets you the same handling as a mecanum system.
  • PrettybirdPrettybird Posts: 269
    edited 2009-07-02 11:11
    Looks good. Parallax needs a bigger version for sure. The boe bot is impressive but still sort of a toy compaired to other platforms. DC motors are much more suitable for wheels and track bots.
  • W9GFOW9GFO Posts: 4,010
    edited 2009-07-03 02:40
    Chris Savage (Parallax) said...
    The remaining 24 pass through the level shifters in groups of 8, so each group of 8 I/O pins can be 3.3V or 5V, but at the servo connector they are inherently 5V. To access them as 3.3V you must connect to the pads provided. Take care.

    What is this jumper for?

    attachment.php?attachmentid=61983

    Rich H
    jumper.jpg
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  • Chris SavageChris Savage Parallax Engineering Posts: 14,406
    edited 2009-07-04 19:51
    That jumper disables the level translators so that you can use the I/O pins directly at 3.3V. Normally these pads will not be populated on the control board as it comes, but in the picture you have you can see have stuffed them with a SIP header making it easier to connect to them for experimenting.

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    Chris Savage
    Parallax Engineering
  • Tex4uTex4u Posts: 30
    edited 2009-09-25 01:25
    Any new information on the Stingray? It's been a while since there has been any info on this thread.

    Thanks for all prior photos and info.

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    Of all the things I have lost...

    I miss my mind the most.
  • Chris SavageChris Savage Parallax Engineering Posts: 14,406
    edited 2009-09-25 01:54
    I'm thinking some news might be available by tomorrow...we'll have to see what happens.

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    Chris Savage

    Parallax Engineering
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  • WhitWhit Posts: 4,191
    edited 2009-09-28 16:41
    Chris Savage (Parallax) said...
    I'm thinking some news might be available by tomorrow...we'll have to see what happens.
    O.K. Chris, how much are the Gracey boys paying you to whip us into a frenzy? smilewinkgrin.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
  • Brandon C.Brandon C. Posts: 106
    edited 2009-09-28 22:57
    I hope this is available by November. I would like one for my birthday! tongue.gif

    Brandon C.

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    No purchase necessary. See back panel for more details.

    Tired of the same old robot brains? not enough processing power? Get the Propeller Robot Module now!!

  • UnknownUnknown
    edited 2009-09-29 14:34
    I suggest adding a keypad to the·Robot and emulating the Bigtrak from the 80's for one modification.
    ·
  • Chris SavageChris Savage Parallax Engineering Posts: 14,406
    edited 2009-09-29 17:15
    Sorry Whit, I really thought we would have had something. I have it from a higher source they will be available this week. Take care.

    The Big Trak thing really brough back memories...I just may have to do that. =)

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    Chris Savage

    Parallax Engineering
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  • WhitWhit Posts: 4,191
    edited 2009-09-29 17:43
    Chris Savage (Parallax) said...
    Sorry Whit, I really thought we would have had something.
    No apology required! I was just kidding. I know that exact deadlines are very tricky. You guys have really been coming out with some really interesting new products lately!

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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
  • PyrotomPyrotom Posts: 84
    edited 2009-09-30 17:44
    Looks like I'm going to be getting one of the first ones, having won it in yesterdays one-day raffle! Looks very cool - I can't wait!
  • WhitWhit Posts: 4,191
    edited 2009-09-30 17:47
    Pyrotom,

    Consider me jealous... rolleyes.gif

    Congratulations!

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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
  • AlsowolfmanAlsowolfman Posts: 65
    edited 2009-09-30 18:51
    if you search stingray they have the page upwith the info sheet, but none in stock yet.

    http://www.parallax.com/StoreSearchResults/tabid/768/txtSearch/stingray/List/0/SortField/4/ProductID/601/Default.aspx
  • Brandon C.Brandon C. Posts: 106
    edited 2009-09-30 22:12
    OMG - It's in stock!!

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    No purchase necessary. See back panel for more details.

    Tired of the same old robot brains? not enough processing power? Get the Propeller Robot Module now!!

  • hover1hover1 Posts: 1,929
    edited 2009-09-30 22:49
    I was hoping to win one in the raffle, but I did win a Schmartboard! This is good because I was about a week from ordering one!

    Concrats Pyrotom!

    Jim
  • BaneBane Posts: 41
    edited 2009-09-30 23:08
    I'd like to see some videos with it running around. I will be getting one but i will probably be a few weeks.
  • ZootZoot Posts: 2,227
    edited 2009-10-01 00:18
    Ken, Chris -- any chance Parallax will offer just the Propeller robot control board on it's own? It looks like a great board and I'd love to have a few of those for my own home-brew chassis (plural).

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    When the going gets weird, the weird turn pro. -- HST

    1uffakind.com/robots/povBitMapBuilder.php
    1uffakind.com/robots/resistorLadder.php
  • WhitWhit Posts: 4,191
    edited 2009-10-01 00:36
    Zoot said...
    Ken, Chris -- any chance Parallax will offer just the Propeller robot control board on it's own? It looks like a great board and I'd love to have a few of those for my own home-brew chassis (plural).

    Zoot,

    I agree. It looks perfect for robotics. Of course you need a Stingray too.·smilewinkgrin.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

    Post Edited (Whit) : 10/1/2009 12:58:31 AM GMT
  • RobotWorkshopRobotWorkshop Posts: 2,307
    edited 2009-10-01 00:58
    Yep, one of those cool new Stingray robots is going to be on my Christmas wish list!

    Robert
  • UnknownUnknown
    edited 2009-10-01 02:19
    I think the man who designed the plexiglass cases for the prop board should develop a case top for the Stingray. It at least needs a cover to cover it and all of the sensors and boards which can be mounted which could be hard but someone will think of something.
  • ZootZoot Posts: 2,227
    edited 2009-10-01 02:24
    This is something I was thinking about ... but you could also mount all boards and electronics inside (underneath the top panel). By removing two hex screws on a side sensor panel, and loosening the other two screws on the same panel, you could "swing" the panel open like a door if you didn't want to have to remove the top panel completely for access. Personally, I would rather mount everything inside and have much cleaner and less fragile 'bot.

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    When the going gets weird, the weird turn pro. -- HST

    1uffakind.com/robots/povBitMapBuilder.php
    1uffakind.com/robots/resistorLadder.php
  • UnknownUnknown
    edited 2009-10-01 02:31
    I think the robot would be a great excuse to use gas sensors.· You could operate it in an area to check for gasses.· If the robot detects a gas, it would·play a tune on·the piezo speaker and start blinking led lights.
  • Chris SavageChris Savage Parallax Engineering Posts: 14,406
    edited 2009-10-01 06:34
    Zoot & Whit...the Control Board will be available separately at some point. At this time we're still trying to finalize some items, but that has always been the plan.

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    Chris Savage

    Parallax Engineering
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  • hover1hover1 Posts: 1,929
    edited 2009-10-01 12:50
    There was no mention of using noise suppresion capacitors on the motors in the assembly instructions. Are they not needed or are they built in to the motor?

    The Stingray probably needs it's own new thread now for builds and mods.
  • Chris SavageChris Savage Parallax Engineering Posts: 14,406
    edited 2009-10-01 17:12
    hover, noise suppression capacitors are not needed in this design and are something you would add only if there was noise being generated that interfered with some sensor you were using. Take care.

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    Chris Savage

    Parallax Engineering
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  • WhitWhit Posts: 4,191
    edited 2009-10-02 11:36
    Chris Savage (Parallax) said...
    Zoot & Whit...the Control Board will be available separately at some point. At this time we're still trying to finalize some items, but that has always been the plan.

    Thanks for the info Chris!

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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
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