Homebrew PCBs

Hello Kerry,

I am wondering if you might put your talents in a section for know nothings
like myself.?

As long as you are not in the business of actually manufacturing and selling
these types of things, there should not be a problem that I am able to see.

Of course, I fail to see a lot at the best of times.. J

I personally would love a CNC machine.  There are cheap ones on sale
(hardware only) that I might afford.  Then there is the addition of software
and 

stepper motors Etc..  This completely blows my budget out of the water.

Thanks Kerry,

 

Rod

 

From: Homebrew_PCBs@yahoogroups.com [mailto:Homebrew_PCBs@yahoogroups.com]
On Behalf Of Kerry Wentworth
Sent: Tuesday, 3 April 2012 10:40 PM
To: Homebrew_PCBs@yahoogroups.com
Subject: Re: [Homebrew_PCBs] DIY CNC pcb drilling

 

  

Very nice! Mine is a bit different (cruder). I used an industrial XY 
stage, 6"x6" with stepper motors, mounted on the end of my Sherline 
mill. A homebrew Z stage drives a Dremel tool up and down. I have not 
yet optimized for speed, as I have a limited number of bits on hand. I 
use a PIC16F876 to accept (a subset of) CNC commands and drive the 
steppers. A DOS laptop reads the Excellon files and generates CNC 
commands. It also has a jog mode that allows finding the corners of the 
board and rotates the coordinates to compensate for misalignment of the 
transferred artwork relative to the axes.

I did all of the hardware and software myself.

Kerry

DJ Delorie wrote:
> Been working on this project for a long time, finally got some results...
>
> DIY CNC 409 0.0145" holes in 12 minutes
> www.youtube.com/watch?v=SR1y6Eq19EU
>
> The CNC machine uses three brushless DC motors instead of steppers, I
> had to make my own controller boards, write the firmware, build the
> table... many steps.
>
> controller page: www.delorie.com/electronics/bldc/
> photos: www.delorie.com/photos/cnc/ (including close-ups of the drilled
board)
>
> I have an excellon-to-gcode script for drills if anyone's interested,
> although there's some new features I still want to try, and I want to
> see how fast I can get the drilling cycle to go without breaking any
> bits :-)
>
>
>
>
> 





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