On Fri, 26 Jun 1998 10:11:08 +0200 Frank Tamminga
writes:
>Michael Hearn wrote:
>
>> I just want to check whether it is true that the PIC models that can
>> deal with analogue ports can only be blown once.
>> I am doing a project at school that involves making a robot that can
>follow
>> a white line made of masking tape (MicroMouse by the IEE) and I was
>> wondering what sort of motor we should use.
As one of the designers of a winning line-follower IEEE project car, I
could go on for quite a while about this. Here's just a couple of major
comments.
If at all possible, don't build your own car. Try to find a R-C model
car that meets the contest rules. You want a conventional design with
two rear wheels driven by a DC motor through a differential, and one or
two steerable front wheels. A suspension system helps a lot as you get
to higher speeds.
A good line following robot need not, in fact almost should not, have a
processor in the loop. Analog circuitry works just as well and is much
easier to "tweak" for best control by installing variable resistors and
socketed capacitors where needed. I would probably include one in the
next car I build to simplify a few parts of it, but that's because I'm
already familair with both line-following robots and PIC processors. If
you're just getting started, stick to op-amps.
_____________________________________________________________________
You don't need to buy Internet access to use free Internet e-mail.
Get completely free e-mail from Juno at http://www.juno.com
Or call Juno at (800) 654-JUNO [654-5866]