Erco's Figure Eight Challenge

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Comments

  • WhitWhit Posts: 4,128
    edited 2013-09-02 - 16:46:33
    Nice work Martin.

    The IV Law of Robotics is that they do not. perform as well when videoed as they do when viewed alone with the Naked Eye. Asimov missed that one...
  • ercoerco Posts: 19,720
    edited 2013-11-24 - 12:20:48
    My laser-guided Terminator bot will soon be on the Figure 8 case, and Spiderbot after that.

    Don't let me have all the fun, guys!
  • ercoerco Posts: 19,720
    edited 2013-11-24 - 22:59:50
    As promised, here's the Terminator doing a Figure 8 using a reflector can as a reference point. Easy peasy!
  • mindrobotsmindrobots Posts: 6,506
    edited 2013-11-25 - 07:26:27
    Circle left and dosey doe,
    Promenade quick and circle right,
    Bow to your partner and shoot 'em in the can....

    Well done, oh great one!!
  • Martin_HMartin_H Posts: 4,050
    edited 2013-11-25 - 07:32:29
    That's a great demo of the laser target finder!
  • ercoerco Posts: 19,720
    edited 2013-11-25 - 08:59:36
    mindrobots wrote: »
    Bow to your partner and shoot 'em in the can....

    HE HATES THESE CANS! STAY AWAY FROM THE CANS!
  • ercoerco Posts: 19,720
    edited 2013-12-31 - 19:24:11
    My final project of 2013, Spiderbot doing a figure 8. Phew! Now I can drink that champagne that Spiderbot walked around. Happy New Year!
  • GarethGareth Posts: 278
    edited 2014-01-17 - 12:06:40
    Another infinity 8 entry from G :-
    [video=youtube_share;aq6g3olGMAA]

    Best regards Gareth
    P.S. (its my lazyest no_need_to_program stint to date..... the "8" is already inbuilt )
  • Martin_HMartin_H Posts: 4,050
    edited 2014-01-18 - 02:55:09
    Gareth wrote: »
    P.S. (its my lazyest no_need_to_program stint to date..... the "8" is already inbuilt )

    But it still counts as the figure eight challenge is a low rules sort of thing. Although slot cars on a figure eight track might be taking things to far.
  • ercoerco Posts: 19,720
    edited 2014-08-22 - 00:36:58
    I can't be the first guy to get a Penguin around a figure 8??? It took a few takes and some patience, but the final result was worth it. :)
  • PublisonPublison Posts: 11,437
    edited 2014-08-22 - 02:59:35
    Good on you, man!

    I see you haven,t modded the board yet. :)

    (I used the same USB battery pack on mine before the surgery)
  • mindrobotsmindrobots Posts: 6,506
    edited 2014-08-22 - 04:28:14
    Well done, good sir!

    It walked a figure eight better than I can!!

    I think the world needs more Penguins or a Penguin 2!!
  • Duane DegnDuane Degn Posts: 10,119
    edited 2014-08-22 - 08:47:34
    I'm happy with that too!

    It's great to see another figure-8 added to the thread. It's about time someone finally got a Penguin to strut its stuff here.
  • DaveJensonDaveJenson Posts: 282
    edited 2014-08-22 - 08:48:03
    erco, Will you publish the code for the Penguin figure 8?
  • TtailspinTtailspin Posts: 1,326
    edited 2014-08-22 - 08:57:11
    Awesome! I'm sure that took some doing.
    Dead Reckoning with a Penguin could not have been easy. You made it look easy, but I can imagine a dozen attempts, and some choice words were used. :)
  • ercoerco Posts: 19,720
    edited 2014-08-22 - 10:48:14
    DaveJenson wrote: »
    erco, Will you publish the code for the Penguin figure 8?

    Sure will, later today. It ain't purty but it worked. Might work for you after some servo calibration and testing.

    OK, LOTS of calibration and testing. :)
  • ercoerco Posts: 19,720
    edited 2014-08-22 - 10:53:41
    I would love to try the figure 8 with a real Parallax Toddler, but alas I don't own one nor can I afford to buy one, given my new "unemployed bum" status. If only there was a small stash of gold Toddlers somewhere in the Golden State. Heck, I'd even settle for a blue one.

    Sigh... A guy can dream, can't he?
  • ercoerco Posts: 19,720
    edited 2014-08-22 - 14:36:27
    Code attached per DaveJensen's request. As promised, it is neither pretty nor efficient, I was just in a "git 'er done" mood before going to sleep yesterday. It will do something in your Penguin, but no doubt, much calibration to match your servos will be required before anything like a figure 8 comes out of your robot.
  • ercoerco Posts: 19,720
    edited 2014-08-23 - 11:16:03
    Has anyone gotten a Stingray around a figure 8 yet? Don't make me do it first, guys!

    Mine isn't even assembled yet.

    And my USB charger doctors still haven't arrived. :(
  • PublisonPublison Posts: 11,437
    edited 2014-08-23 - 12:47:02
    erco wrote: »
    I would love to try the figure 8 with a real Parallax Toddler, but alas I don't own one nor can I afford to buy one, given my new "unemployed bum" status. If only there was a small stash of gold Toddlers somewhere in the Golden State. Heck, I'd even settle for a blue one.

    Sigh... A guy can dream, can't he?

    I may take the BXP2 Penguin code and transform to Toddler. I will not take any credit.
  • Martin_HMartin_H Posts: 4,050
    edited 2014-08-23 - 19:06:45
    Nice job with the penguin.
  • NikosGNikosG Posts: 702
    edited 2014-08-25 - 14:32:44
    Better late than never…..
    Here is Artist’s attempt in erco’s figure 8 challenge.

    [video=youtube_share;Ua92RTLxspw]

    This code is appropriate for the Arlo robot and it uses only the drive_speed (int left, int right) function.
    I also use the SD card in order to announce the challenge with speech.


    attachment.php?attachmentid=110636&d=1409001660

    Erco, if you agree I also have and another prospect on your challenge:

    attachment.php?attachmentid=110635&d=1409001640

    It would be interesting if the robot could make a not symmetric 8. For instance what type of “8” could make the robot if we place it somewhere not in the middle of the two points A ,B? ( e.g closer to the A with x<y)
    712 x 486 - 47K
    652 x 626 - 82K
  • TtailspinTtailspin Posts: 1,326
    edited 2014-08-25 - 18:16:52
    That was a fast lap! Good stuff. :thumb::thumb:

    To do a figure 8 with any bot, is not as easy as it sounds. It is easy to say, but challenging to do.




    -Tommy
  • ercoerco Posts: 19,720
    edited 2014-08-25 - 19:28:35
    Είναι όμορφο NikosG!

    Very well done. As Tommy said, you went fast and made it look easy. And a talking robot? Now you're just showing off! :)

    I love your asymetrical 8 idea. Show us how to do it, Boss!
  • John A. WilliamsJohn A. Williams Posts: 8
    edited 2014-08-27 - 19:49:23
    This is my Stingray doing the figure 8.

    [video=youtube_share;FX4oQ8fhMp8]

    John
  • TtailspinTtailspin Posts: 1,326
    edited 2014-08-27 - 20:49:01
    That does a great job of showing the Stingrays slow speed control...:thumb: Wait, a Stingray with slow speed control?, How did you do that?



    -Tommy
  • John A. WilliamsJohn A. Williams Posts: 8
    edited 2014-08-28 - 07:02:25
    Tommy,

    I wish I could take full credit for the speed control of my Stingray, but I can't. My Stingray thinks it is a S2 robot.

    Credit for the speed control has to go to Phil Pilgrim and his S2.spin motor control object.

    The hardware used for this robot:

    Parallax Activity Board
    Pololu Dual MC33926 Motor Shield for Arduino
    Dagu Simple Encoder Kit
    Stingray Kit (Yes, I am using the 30:1 310 rpm motors that came with the kit)

    The Pololu motor driver I'm using is not the same one that Parallax sells. It is the Arduino shield model, but I'm using it as a general purpose driver. It can be used in place of the S2 motor driver chip. This means I did not have to change the S2.spin code. I only had to change some of the constants and I/O pins assigned to the driver.

    John
  • ercoerco Posts: 19,720
    edited 2014-08-28 - 12:27:18
    Fabulous work, John! You nailed the figure 8 (and made it look easy) on your third post. Congrats and welcome to the club!
  • WhitWhit Posts: 4,128
    edited 2014-08-28 - 19:42:18
    Great stuff Nikos and John! erco has wanted to see this a long time...
  • ercoerco Posts: 19,720
    edited 2014-08-31 - 18:53:44
    I have a silly idea to temporarily add two servos to one of my prized 1966 Remco Lost in Space toy robots to make it do a figure 8. One moves the on/off switch and the other changes the steering from left to right circle. Pointless, and I'm not sure when I'll get to it, but the thought of making things "do the eight" that otherwise shouldn't is kind of fun.

    I blame Ttailspin. A while back, he shared a video of his robot riding on top of an S2 which did a figure 8. That's not cheating, that's GENIUS.
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