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9069RE: [SeattleRobotics] way beyond a newbie....

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  • dlc@verinet.com
    Nov 1, 2001
      Great post! It brings up some ideas that I didn't initially think of for
      helpful resources.

      For beginners in electronics, these are great resources:
      Radio Shack: Forrest Mimms' electronics series - great helpers.
      Don Lancaster's "TTL Cookbook" is great for using and understanding
      logic chips.

      Beginners in robotics
      Parallax Basic Stamp II and Scott Edwards "Programming and Customizing
      the Basic Stamp Computer (2nd edition)", The Board of Education goes
      well with this book and the Stamp II (IIP,IISX,...)

      There is no gentler introduction to sensor/microprocessor interfacing
      than the Stamps. When you graduate out to HC11/12, AVR or PIC chips you
      can still find a use for that Stamp II!

      Tons of fun out there - go for it!

      Dennis Clark dlc@...

      > You have a number of options.
      > Get a processor evaluation board and a good book. The '11 is a pretty
      > advanced chip,
      > but with a good book and an intuitive language like sbasic, (I think 681x
      > asm is pretty intuitive, but...)
      > you could go far. Get the book first. Go to the local library or book store
      > and read the book before
      > you buy it, then get the processor to match. Don't buy an 11 because I said
      > so, other processors
      > like the PIC or Stamp have cheap boards with excellent references. (anyone
      > have a good package to recommend?)
      > Take a class at the local college/university. I got my start in a
      > microprocessor course. Stay away from high-level
      > languages like C, C++ or Java, as these courses tend to be application
      > oriented and do not address hardware.
      > The class I took was in the Engineering curriculum, not the CS side. CS
      > offered a "Small Systems" course for
      > Intel assembly. That class learned PC IO programming that could be used to
      > control a robot from a PC.
      > Start with RC controls. Many of the robots in SRS use hobby servos for
      > movement and control. These can be
      > used with a traditional RC receiver, or patched into a microcontroller. A
      > working RC robot is simple to retrofit w/ a
      > brain.
      > Stick with your strengths. If you build a switch controlled robot, it is
      > relatively simple to replace the switches
      > with relays. You can then gradually introduce more advanced
      > electronics/software as you learn. A reversing motor
      > controller can be made w/ 2 SPDT relays or 2 SPDT switches, you dont get pwm
      > control or PID, but it will move.
      > There will be plenty of time to add such things as you are more comfortable.
      > Books on electronic circuits, logic, or one of the many robot building books
      > would be a good reference as well. Go
      > to the bookstore, read a bunch of books, buy the one that you understand the
      > most (the one that you say "I could do that!")
      > and get to work.
      > If you are going to take a course, post a link to the description here and
      > we could tell you if it is what to expect. We could
      > recommend books, kits or web pages to read. (plug your favorite
      > site/board/book here)
      > Of course, read the Encoder, and post questions here.
      > Have Fun
      > TE
      > -----Original Message-----
      > From: dragnfyr [mailto:dragnfyr@...]
      > Sent: Thursday, November 01, 2001 3:16 AM
      > To: SeattleRobotics@yahoogroups.com
      > Subject: [SeattleRobotics] way beyond a newbie....
      > I joined this list in hopes of learning some robotics, and I believe that
      > I will, however I am way below most of you on the robotics scale it
      > appears... Are there web sites and/or other groups like this where I can
      > learn the basics of robotics? The mechanics I understand, but how to
      > integrate that with the electronics and its coding have me at a loss.
      > To the gentleman (or lady) who was trying to figure out how to mount a
      > bearing, THAT I know the answer to assuming you have access to a drill press
      > or drill. I can suggest two fairly easy ways of mounting a bearing if it has
      > an inner and outer race. The first way is to simply sandwich the bearing
      > between two pieces of metal bolted together around the flat sides of the
      > bearing with a hole thru each side for the shaft and inner race clearance.
      > The second is two use two plates and the frame of the bot, all three
      > drilled for the bolts to hold them together, the outer and the frame also
      > have the hole for the shaft and inner race, the center plate is the
      > thickness of the bearing and has a hole the size of the bearing drilled in
      > it so that the outer race fits inside it snuggly. Either way is doable by
      > someone who understands the mechanics of a bearing, or can be machined for
      > just the right appearance if you are also going for looks. Hope this was
      > of some help
      > Drag
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