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Want to make a Sumo-Bot confused about BASIC STAMP 2 — Parallax Forums

Want to make a Sumo-Bot confused about BASIC STAMP 2

Kd7laxKd7lax Posts: 42
edited 2005-05-21 02:26 in BASIC Stamp
Hi,
I am new to this robot thing.... but I have been into electronics for some time now.. and have designed and built a few PCB boards along the way.

But I am stumped this time !
I want to make a Mini-Sumo Bot so I thought I would buy a micro controller and then just design my own PCB board.... but I am confused at the difference between the http://www.parallax.com/detail.asp?product_id=27291 and this http://www.parallax.com/detail.asp?product_id=BS2-IC ?
can any one help me out here? I am not sure witch one I want.... are they the same thing?... I noticed the through-hole version has a Serial port built in?

also when building a sumo bot would I have to buy other components for my board? like a motor controller?

Comments

  • kb2hapkb2hap Posts: 218
    edited 2005-05-17 00:41
    Operation wise they are the same. physically they are much different.· One is a SMD component mount board pre-made which makes it much smaller.· The thru-hole mount board is much larger but some use the components to set the stamp directly into there design (mass production).· You could use an motor controller. I really depends on exactly what you whant to accomplish with you sumo-bot. You should really check out the listings below:

    this gives you an idea and starts you off with micrcontrollers:
    http://www.parallax.com/dl/docs/books/edu/wamv2_2.pdf

    this is the Parallax robotics link:
    http://www.parallax.com/html_pages/robotics/index.asp

    this is the SUMO-Bot manual:
    http://www.parallax.com/dl/docs/prod/robo/sumobotman.pdf

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    DTQ
  • Kd7laxKd7lax Posts: 42
    edited 2005-05-17 02:52
    I want to accomplish building one for under $125.00 [noparse]:)[/noparse]
    I think I am just going to use cheapo servo's for the drive system... I am just going to use it to compete against a friend .. I don't know if I will ever use it in a compitition.
    thanks.
    Mike
  • Russ FergusonRuss Ferguson Posts: 206
    edited 2005-05-17 05:03
    Have you considered making a Mini-Sumo from the BS2-OEM board? If you have some proto board handy, you can pretty quickly mount the BS2-OEM on it for easy I/O connections. The BS2-OEM already has the serial connector on it, so just add a 4 cell battery pack and it is ready to take a program.
    http://www.parallax.com/detail.asp?product_id=27291
    Sale price is $30.
    The two pictures may give you some ideas about what can be done.
    IMG_0658.jpg
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    IMG_0659.jpg
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  • Kd7laxKd7lax Posts: 42
    edited 2005-05-17 06:02
    Yeah thats what I was wondering ! thanks for the help.. [noparse]:)[/noparse]
    I confused about wich one to use the BS2-OEM or just the BS2-Chip now I know I can build it with the OEM through-hole version.

    thanks guys!
    any other info or tips on building sumo bots would be helpfull !
    I need a parts list ( save on shipping by ordering it all at once) so if you guys could help me that would be great.

    So far I have:
    BS2-OEM board.
    (2) QTI Sensors ( I think thoughs are the ones I should use )
    Battery holder
    Serial Cable
    (2) Continuous Rotation Servos

    Any thing else?
    thanks for the help
    Mike
  • Russ FergusonRuss Ferguson Posts: 206
    edited 2005-05-17 12:38
    1. Buying the wheels that mount directly on the servos will save you alot of trouble.
    http://www.parallax.com/detail.asp?product_id=721-00001-721-00002

    2. The sumo needs sensors for the edge of the circle (which may be the QTI that you are talking about), but the photo resistors will work just fine:
    http://www.parallax.com/detail.asp?product_id=350-00009

    3. The sumo needs ensors for "seeking" the other sumo and the IR stuff works pretty good for that:
    http://www.parallax.com/detail.asp?product_id=350-00014
    http://www.parallax.com/detail.asp?product_id=350-00017

    It is hard to beat the price of the BOE-BOT from Radio Shack to get all of this stuff. You may also want to wait for the next sale on the Parallax EBAY page. The BOE-BOT was recently listed with a "BUY-NOW" for $99.
  • Kd7laxKd7lax Posts: 42
    edited 2005-05-18 05:29
    OK,
    the QTI sensors that I was talking about are just what I saw on this website http://www.parallax.com/detail.asp?product_id=555-27401 and it said they are made for detecting the white line for sumo bots.... but photo resistors are cheaper and if they do the same thing I will just go with them.

    So when are they going to have there next ebay auction ? or do we just have to watch and wait ?

    and also how do I know how long the sale will be on the OEM BS2 kit? or is it one of toughs for ever sales? I don't want to miss it but I am just trying to think off all the parts I need before hand.

    I am still a little confused about the BS2.... so there are pin outs and what do I hook up to the pin outs? will they hook directly up to servo's and sensors? or will they hook up to another controller circuit ? I started to read the WAM but it was confuesing me even more [noparse]:)[/noparse]

    thanks for all your help guys!
    oh and has any one used an Etch Circuit for there bots? I have a bunch of photo-board that I need to use up so I figured I could make it etched....... if any one has a circuit design let me know [noparse]:)[/noparse]

    -Mike
  • dandreaedandreae Posts: 1,375
    edited 2005-05-18 15:56
    The servos connect directly to the I/O pins and they use Vdd and Vss.· The Red wire goes to Vdd, the white wire goes to the I/O pins, and the black wire goes to the Vss.· If you are controlling more than five servos you will need a servo controller.

    Dave

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    Dave Andreae

    Tech Support
    dandreae@parallax.com
    www.parallax.com



    Post Edited (Dave Andreae (Parallax)) : 5/18/2005 4:15:51 PM GMT
  • Russ FergusonRuss Ferguson Posts: 206
    edited 2005-05-19 06:51
    KD7LAX:

    Here is a schmatic·of·the experimental circuits used in the "Robotics with the Boe-Bot". The book will help you understand exactly how the sensors work and how the BS2 uses them.

    The schematic is drawn so that a BS2 OEM is supposed to be plugged into connector 'J1'.

    The QTI sensor array will be a very reliable sensor for detecting the edge of the circle. The photo resistors will require you to experiment until you get it working the way you want it.
    Robotics.GIF
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  • Kd7laxKd7lax Posts: 42
    edited 2005-05-20 19:23
    Hi again!
    thanks for all of your help...
    I have a few more questions [noparse]:)[/noparse]

    ok so how many QTI sensors am I going to need? and how many IR transmitters/receivers am I going to need?

    here is my list of things to get:
    BS2-OEM board
    (2) QTI Sensors
    Battery holder
    Serial Cable
    (2) Continuous Rotation Servos
    (?) IR transmitters/receivers
    ( custom made PCB board)
    (custom made wheels)
    (costom made body)
    Download Programming software

    One thing I am not sure of are my programming skills [noparse]:)[/noparse] not sure if they are up to snuff or not.
    If you think I need any thing else for the list let me know !

    Thanks guys.
    Mike
  • Russ FergusonRuss Ferguson Posts: 206
    edited 2005-05-21 02:26
    Mike:

    I suppose that you could start out with one of each sensor.

    You will have to decide how competative your robot is going to be. Every sensor that you have on a robot and that you can use effectively will make your robot better.

    Building a robot is allot like getting an antenna for a radio. I may get a G5RV antenna and find that it does everything I need it to do. The antenna for your radio may need to be a vertical of some sort. You really need to establish some parameters of what you will need the robot to do and then design/spend accordingly.
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