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Cartographer robot help! — Parallax Forums

Cartographer robot help!

HenrymouHenrymou Posts: 128
edited 2007-02-01 05:38 in Robotics
Hello, My name is Henry Meier
I am building a robot for the Synopsis science fair in San Jose. Recently I learned that to map an enviroment, you need a data logging module, a bunch of sensors to measure distance travelled, speed, and location. Instead of buying these sensors and making my robot too complex to form a stable hypothesis for my project, i have decided to just add the parrallax GPS sensor:
28146.jpg and a CMUcam1 to detect objects:
cmucam.jpg all mounted on a powerful ATR base from roguerobotics.com:
stepnine-small.jpg the small motors are controlled by the motor controller included with the kit.
I seem to be all set, If anyone has any ideas for the storage module for my robot, or tips on mapping, please let me know.
-Henry

Comments

  • HenrymouHenrymou Posts: 128
    edited 2007-01-23 06:11
    ALso, the robot is controlled via a BS2 microcontroller, just so you know. I do have moderate experience programming in basic, and this robot will teach me to be an expert in Basic.
  • GadgetmanGadgetman Posts: 2,436
    edited 2007-01-23 08:20
    You are aware of the accuracy of the GPS module?

    +/- 5meters positional accuracy, and +/- .1meters/second velocity accuracy.
    (that would be +/- 17' or 4" respectively)

    For a slow-moving unit, like a tracked robot, you can probably forget all about the velocity measurements.

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  • HenrymouHenrymou Posts: 128
    edited 2007-01-23 15:23
    oh no, no, I would love to track the velocity measurements, to track how far the robot has gone from it's starting part an determine it's current location. y robot is acctually pretty fast because of it's two powerful motors.
  • allanlane5allanlane5 Posts: 3,815
    edited 2007-01-23 15:51
    His point is that the GPS will give you positional accuracy to +- 15 feet. That's not going to help you map a room.
  • HenrymouHenrymou Posts: 128
    edited 2007-01-25 01:44
    then how should I map a room?
  • DiablodeMorteDiablodeMorte Posts: 238
    edited 2007-01-25 03:52
    Probably with your original plan of sensors and such. You might be able to simplify it some if you ultrasonic rangefinders and polar coordinates.
  • HenrymouHenrymou Posts: 128
    edited 2007-01-26 03:10
    Ultrasonic rangefinders?! but i wanna use the camera to determine distance! i guess I can use an odometer and comp(expletive) to find my relative location, but not my EXACT location(he he I learned that in Geography cl(expletive)) If my robot slipped on an obstice, it could alter the entire map off by a few inches!
  • HenrymouHenrymou Posts: 128
    edited 2007-01-26 03:18
    why can't I say (expletive)! (expletive)!
  • HenrymouHenrymou Posts: 128
    edited 2007-01-26 03:41
    if anyone know's how to make the CMIcam1 sense obsticles, please tell me.
  • LarryLarry Posts: 212
    edited 2007-01-26 04:39
    OK, potty mouth, here ya go

    http://www.seattlerobotics.org/encoder/200110/vision.htm

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  • HenrymouHenrymou Posts: 128
    edited 2007-01-26 06:07
    yeah.gif THANK YOU!!!!!!!!! the laser range finder sounds pretty cool, but what about the comp(expletive) and accelerometer?
  • crgwbrcrgwbr Posts: 614
    edited 2007-01-31 14:34
    "but what about the comp(expletive) and accelerometer?"

    wow, the language filter has been messing up a lot. lol, compass.

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  • FranklinFranklin Posts: 4,747
    edited 2007-01-31 22:25
    Maybe we should spell it comparse. [noparse];)[/noparse]

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  • HenrymouHenrymou Posts: 128
    edited 2007-02-01 05:38
    hahahahha i get it
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