Pic-O-Botboard URL:

http://www.oricomtech.com/bot40.htm

I'm Building one now to go in my mowbot.

-- Lawrence Lile


----- Original Message -----
From: "Richard Hughes" <richardhughes260@yahoo.com>
To: "Lawrence Lile" <llile@toastmaster.com>
Sent: Thursday, May 31, 2001 11:33 AM
Subject: Re: PIC-O- Botboards docos


> IS there a URL for the PIC-O-BotBoards?
>
> --- Lawrence Lile <llile@TOASTMASTER.COM> wrote:
> > Dan,
> >
> > Here's some erratta for you - just started slapping
> > down components today!
> > So far no showstoppers, just annoying little things:
> >
> > 1.  On the Schematic, the Serial EEprom U7 is listed
> > as U4.  There are two
> > U4's, the eeprom and the L293D.
> >
> > 2.  The hole for the heatsink tab of the 7805
> > doesn't line up with the case
> > very well, had to redrill it.   A cheap trick:  You
> > can suck more heat out
> > of a 7805 by putting copper areas on both sides of
> > the board, and putting a
> > few plated through holes under the component.  They
> > will conduct a
> > surprising amout of heat.  There is room for this,
> > and you can never have
> > enough heat sink.
> >
> >
> > I'll keep you posted on any other gotchas I find.
> >
> > Generally, documentation is complete and accurate.
> > Some other general
> > comments:
> >
> > The dot-matrix printed schematics are hard on the
> > eyes, in this jaded age of
> > perfect laserprints.  This is probably a function of
> > your software.  Some of
> > the components are a little hard to make out in the
> > schematic, just because
> > I'm not used to the symbols.  Not a giant problem.
> >
> > In the pictorial view, the dot matrix printing is
> > also hard on the eyes.  My
> > own preference is to take pains to make the picture
> > of the part really look
> > like the part, and a lot of the pictures look kinda
> > boxy.  This may also be
> > a limitation of the software you are using, and is
> > also not a big deal.
> >
> > On the pictorial view, I went through and labeled
> > the IC's with the actual
> > part type , i.e. U3 = L293, so that I can keep them
> > straight.  This might be
> > something to add to help the builder.
> >
> > It would be really cool if there was a silkscreen
> > layer with outlines for
> > components and component designations.  If I had
> > thought about this I would
> > have printed off the pictorial view to scale and
> > pasted it onto the board,
> > for a homemade silkscreen layer.  I'm sure adding a
> > silkscreen layer would
> > affect the cost, maybe too much?
> >
> > Having lots of fun with it!
> >
> > -- Lawrence Lile
> >
> > --
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> > email listserv@mitvma.mit.edu with SET PICList
> > DIGEST in the body
> >
> >
>
>
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