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RObot #1 (Mark II) — Parallax Forums

RObot #1 (Mark II)

Benbo231Benbo231 Posts: 26
edited 2009-04-19 02:40 in Robotics
Hi people
···· I kinda suck at programming, so I decided to go with an oopic stamp for my next project. Electronics for dummies say they're easier to program. Does an OOpic 24 pin stamp work on a BOE?

Also, I want to know if there is a 'sound to text sensor' that can hear what you say and give input. Does An RFID tag have a different frequency then another RFID tag? Does the GPS sensor work inside?

Mynewest and coolest program is a robot that uses GPS, RFID, Compass, and Ping))) to carry my books from one class to the next. I figure I'll power it up, swipe an RFID tag, and it will go to the class where the RFID tag says to in the program. The ping sensor will be to stop if a person's in front of it. the SOund to text will be so I don't need like 6 RFID cards to make it work, I could say "science" and it will go to science.

This is the spring board for a robotic car I will build.

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When you're dating a pretty girl, an hour seems like a minute.

When you're sitting on an oven, a minute seems like an hour.
That's relativity.
-Albert Einstein

Post Edited (Benbo231) : 4/13/2009 1:14:13 AM GMT

Comments

  • Mike GreenMike Green Posts: 23,101
    edited 2009-03-21 18:20
    We really can't help you with the OOpic. The BOE is designed and tested with Parallax Stamps. To the extent that other manufacturer's devices are compatible with Parallax's Stamps, the BOE will probably work with them since there's not much special about the BOE. It provides power, a serial programming port, and connections to the 16 I/O pins.

    There are sound to text devices. You have to hook up your own microphone and you have to program them with a vocabulary. They're also not cheap and not as reliable as you might think. Good voice to text processing for more than a few words really takes a lot of processing power.

    There are many different RFID frequencies. The ones Parallax uses works at 125KHz. Read the Wikipedia article on RFID for more information.

    GPS sensors either don't work at all or work poorly inside. They're really designed to work with a direct view of the satellites in the sky. They also don't have the kind of resolution needed for your project. Minimum distances are on the order of many feet.

    Consider using a standard universal remote control. These use IR and a Stamp can receive and decode it. You could create a simple map inside your program with distances from one doorway to the next and the relationships from one hallway to the next. The robot could use its compass and PING sensors along with keeping track of its movements (wheel revolutions travelled) to compare its current surroundings to the map to figure out where it is. There are always errors in determining position and referring to markers along the way (like doorways) can help.
  • Benbo231Benbo231 Posts: 26
    edited 2009-03-31 20:21
    (Consider using a standard universal remote control. These use IR and a Stamp can receive and decode it. You could create a simple map inside your program with distances from one doorway to the next and the relationships from one hallway to the next. The robot could use its compass and PING sensors along with keeping track of its movements (wheel revolutions travelled) to compare its current surroundings to the map to figure out where it is. There are always errors in determining position and referring to markers along the way (like doorways) can help.)



    now how would I go about making a map for it??? is there any other language that's easier than basic???

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    When you're dating a pretty girl, an hour seems like a minute.

    When you're sitting on an oven, a minute seems like an hour.
    That's relativity.
    -Albert Einstein
  • Benbo231Benbo231 Posts: 26
    edited 2009-04-01 00:26
    also...

    the Ping Sensor I have Hooked up does not light up-i know it does because i did have hooked it up where it lights up

    I am following all the instructions in the parrallax manual... is it faulty or wrong wiring or what??

    ▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔
    When you're dating a pretty girl, an hour seems like a minute.

    When you're sitting on an oven, a minute seems like an hour.
    That's relativity.
    -Albert Einstein
  • Mike GreenMike Green Posts: 23,101
    edited 2009-04-01 00:39
    Basic is about as easy a programming language as there is. Parallax has lots of tutorials like "What's a Microcontroller?" that can help you learn their version of Basic and how to use the Stamps. Some of the information there is applicable to the OOPic, but some of it is not. You'll have to use the OOPic's manufacturer's documentation and tutorials.

    "faulth or wrong wiring or what??" Who knows? You will need to make up a diagram showing how you've hooked things up and post that. We can't guess what you've done. It may also be your programming. The PING has to be triggered by a short pulse as described in the documentation for it.

    How about learning first how to program and how to do something simple like turn an LED on and off and detect whether a switch is on or off. That's a good beginning.
  • LarryLarry Posts: 212
    edited 2009-04-01 01:05
    Remember-

    The Ping))) sensor LED only lights up when you are actually ranging with it.
  • Chris SavageChris Savage Parallax Engineering Posts: 14,406
    edited 2009-04-01 18:42
    Hello,

    When the PING))) is triggered the LED comes on as the signal line goes high. At the receipt (or timeout) of the return pulse, the signal line goes low and the LED goes out. So if the LED is never coming on, then the PING))) is not seeing the trigger pulse or there is a problem with your power supply or connections.

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    Chris Savage
    Parallax Engineering
  • Benbo231Benbo231 Posts: 26
    edited 2009-04-02 23:11
    mike green-i already programmed a working robot, it's just that it fell apart



    thx 4 the ping tip-i'll be checking in with more ?s later

    ▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔
    When you're dating a pretty girl, an hour seems like a minute.

    When you're sitting on an oven, a minute seems like an hour.
    That's relativity.
    -Albert Einstein
  • Mike GreenMike Green Posts: 23,101
    edited 2009-04-02 23:19
    Robots usually don't just fall apart. What happened? Duct tape, rubber bands, and hot glue often help ... and make your construction look more authentic.
  • Benbo231Benbo231 Posts: 26
    edited 2009-04-11 13:05
    I was using 2 leaf spring switches on front, and wanted to hook up a part of a clothes hanger to each, for 'feelers'. i TRIED GLUE, SODER, EPOXY, INDUSTRIAL STRENGTH ENGINE EPOXY with a max capacity of 2 tons per sq inch and nothing could hold it on. I got a PING sensor for my birthday and finally wired it up, and it works even better now. I am only waiting for the PING servo mount to finish it. Video·+ Pix·coming soon.

    ▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔
    When you're dating a pretty girl, an hour seems like a minute.

    When you're sitting on an oven, a minute seems like an hour.
    That's relativity.
    -Albert Einstein
  • Mike GreenMike Green Posts: 23,101
    edited 2009-04-11 13:50
    Clothes hangers are tough. They're usually aluminum wire and painted. There's also tremendous leverage at the point where they attach. Sometimes you can use a hammer to flatten the end so you can drill a couple of holes and use screws and nuts to hold it.
  • Benbo231Benbo231 Posts: 26
    edited 2009-04-12 01:02
    I got the mount a few hours ago. It`s all set up, just gotta let the glue dry. The robot works great. it goes until it is 10 cm away from something, then looks 45° left, 45° right, and takes Ping readings at each. whichever reading is bigger, it turns 90° in that direction, and repeats.

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    When you're dating a pretty girl, an hour seems like a minute.

    When you're sitting on an oven, a minute seems like an hour.
    That's relativity.
    -Albert Einstein
  • MovieMakerMovieMaker Posts: 502
    edited 2009-04-12 03:38
    How about letting us see your code? and schematics? And pictures?
  • Benbo231Benbo231 Posts: 26
    edited 2009-04-13 01:10
    Heres some pix and flix taken from a dinosaur of a camera (my grandmom couldn't figure it out, she gave it to me).

    Made with a plywood base
    Powered by a BOE and BS2
    2 drive servos
    1 ping and ping mount

    code comin up... as well as better vids

    jus gotta 'borrow' my mom's camera

    ▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔
    When you're dating a pretty girl, an hour seems like a minute.

    When you're sitting on an oven, a minute seems like an hour.
    That's relativity.
    -Albert Einstein

    Post Edited (Benbo231) : 4/13/2009 1:17:26 AM GMT
    800 x 600 - 74K
    800 x 600 - 73K
  • MovieMakerMovieMaker Posts: 502
    edited 2009-04-13 01:56
    Thanks! Cool.· It is hard to imagine without pictures.
    ·
  • P!-RoP!-Ro Posts: 1,189
    edited 2009-04-13 23:11
    You want to build a robot car? What is your timeline?

    I can help your book-carrying·robot; however I first have a few questions for you. First, what kind of size limits do you have? Does it need to be large to carry·text books, or can it be fairly small? Second, what type of budget are you working with? Earlier on, while working on my robot FHR (five horse robot) I had too much I needed to buy, and very little money. This really slowed me down.

    One more thing that could help is a description of what·you would like your robot to look like. One easy way to do this is to sketch a picture and post it here, or make a CAD image. With this done, I'll be able to give you some·help.

    BTW, look at the beginning of my·FHR robot post. You'll find it started very similarly to·yours right now.

    -Derrick

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    PG
  • Benbo231Benbo231 Posts: 26
    edited 2009-04-17 01:27
    here it is

    uses h-bridge, ping, and IR beacon to follow me around

    should I use Prop, pr BS2

    ▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔
    When you're dating a pretty girl, an hour seems like a minute.

    When you're sitting on an oven, a minute seems like an hour.
    That's relativity.
    -Albert Einstein
    1700 x 2338 - 534K
  • W9GFOW9GFO Posts: 4,010
    edited 2009-04-17 19:29
    Nice idea. I would design it in such a way that wether loaded or empty the weight distribution between the drive wheels and the swivel wheel are consistent. Meaning that the books would be placed just behind the drive wheels. You would then need something under the front to keep it from tipping fwd when stopping abruptly. With the weight of the books far back you avoid the tipping problem but then the turning behavior will vary greatly depending on how many books you have loaded. When pivoting with a lot of books on board the robot will want to keep going because of all the mass. It will want to swing out. If you keep the design as it is now it might be better to have it drive with the swivel wheel at the front. The weight in the front will be more stable in turns and it has the advantage that you don't have to reach around to grab your books.

    Rich H
  • P!-RoP!-Ro Posts: 1,189
    edited 2009-04-18 01:30
    You may wish to allow the ping to pivot. The way it is right now, you may have a little trouble preventing your robot from hitting the wall, as well as finding your classroom. To help you out, I've provided a link to a variety of turrets below.

    http://www.budgetrobotics.com/shop/?shop=1&cart=758217&cat=118··
    ·
    Also, you haven't stated what kind of budget you're working with. If it is fairly limited, a good place for you to get parts is the junkyard. You can get old motors out of car doors and the windshield wiper motors could work well, too. If you aren't too worried about speed, there some fairly powerful brushless motors in old VCRs, as well.
    ·
    Also, what kind of a frame are you thinking about? Will it be plastic, aluminum, wood? If you are looking to save weight on your project, PVC board might be interesting to use, as well. The only problem with it, however, is it is easy to bend and dent. In some cases this might be good, like if you are worried about your robot scratching things up in your school. If you are interested in it, there is a link below.
    ·
    http://www.budgetrobotics.com/shop/?cart=758217&cat=103

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    PG
  • Benbo231Benbo231 Posts: 26
    edited 2009-04-19 01:04
    budget- 100 to 150 a month

    gonna use like ...

    pvc plastic stuff



    ping is just so it doesn't run anyone over.

    ▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔
    When you're dating a pretty girl, an hour seems like a minute.

    When you're sitting on an oven, a minute seems like an hour.
    That's relativity.
    -Albert Einstein
  • P!-RoP!-Ro Posts: 1,189
    edited 2009-04-19 02:40
    "budget- 100 to 150 a month"

    So does that mean you'll have to cut costs to save money or not? That's what I meant by budget--how much you want to spend on the robot. Sorry abou' that.

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    PG
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