Homebrew PCBs

Hi Hans,
        I am in New Jersey. The area I am in is very populated. Any
type of problem causes the area to grid lock. I walk everywhere!
There was a laser site on the internet that has simple cutting
lasers. They are quite large. About 3 feet in length. One of those
deals where the laser stays still and the board does all the moving.
Maybe I will go looking again. If my sales ever go back up I will
get a batch of boards made. Right now I only make boards as they
are ordered. My booklets are done the same way. The last few days I
have been designing a homemade heatsink for the L298. I ended up
using three pieces of scrap aluminum that form a fan. My new board
has 2 relay drivers 5 inputs and four stepper motor outputs. I left
out the L297. I went with 7486s and 7474s to drive the L298. I wanted
a simple board for beginners. The current is set by resistors in
series with the motor. A very crude but effective BiPolar board.

                                        John

                                     




--- In Homebrew_PCBs@y..., HW <hans@c...> wrote:
> John,
> Laser sounds interesting. I think what I would need is a source for 
the
> laser and it's control electronics, the rest I can myself...
> Do you have any sources for reasonable priced cutting lasers ?
> 
> Is that bridge in Texas ?
> 
> Hans W
> 
> crankorgan wrote:
> 
> >  Hans,
> >      Texas has some good scrap plastic places.  I got lucky,
> > there is a place that will sell me scrap within walking
> > distance. The catch is they took the bridge down to build a
> > new one. Now I have to go seven miles in each direction
> > out of my way. The car broke down twice in the detour
> > route. Now I buy on Ebay.
> >       A year ago I was helping a guy build a laser powered
> > circuit board machine. Once he got the laser to fire and
> > cut the copper, then he disappeared! Maybe he pointed it the wrong
> > way.
> >
> >                                            John
> >
> >
> >
> > --- In Homebrew_PCBs@y..., HW <hans@c...> wrote:
> > > Houston, Texas
> > >
> > > crankorgan wrote:
> > >
> > > >  Hans,
> > > >      Where are you located? Texas? I keep thinking Germany for
> > > > some reason.
> > > >
> > > >                               John Conrad Kleinbauer
> > > >
> > > >
> > > >
> > > > --- In Homebrew_PCBs@y..., HW <hans@c...> wrote:
> > > > > Thanks .. he has some good deals..
> > > > > hansw
> > > > >
> > > > > crankorgan wrote:
> > > > >
> > > > > >  Hi Hans,
> > > > > >         In Ebay, check out  hman16  auctions. He is based 
in
> > > > > > Florida. He sells scrap plastic.
> > > > > >
> > > > > >                                    John
> > > > > >
> > > > >
> > > > >
> > > > > [Non-text portions of this message have been removed]
> > > >
> > > >
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