Homebrew PCBs

--- cristian <cristianbip@...> wrote:

>May I have the schematics, please?
>Cristian


Cristian

I'm not sure whether you were referring to Carl's
schematics or mine.

I had already started a design slightly different to
Carl's using a pic as a controller rather than a 556.
The reason for this is that I can easily tweak the
timing by software and in circuit programming rather
than changing components, variable resistors etc.

Also I have been waiting some weeks for delivery of
Ben's book haere in UK thru Camden Steam Services, so
I currently have no details of the servo drive that
Carl use's ie Ben's design.

My own experiments had showed that circuit board
copper ablation was definitely possible, and Carl has
confirmed this. I personally think the success of this
project is in controlling the wire drive, for which I
have already constructed a miniature geared drive,
which will track the set peak discharge voltage.

You are welcome to my schematic in a few days on the
basis that it is purely experimental, but it would be
nice to collaborate with someone who also has a desire
to see trhis thing cutting track. I will attach the
pic asm code when i have got it working. Do you do
PIC's?

Both the IPS5451 and the IPS5751 are listed by Farnell
UK as high side drivers, and the 5751 seems quite
suitable. 

I really want this m/c to be sitting on the bench
turning out PCB's ready for roller tinning while I do
other useful things.

Roger



	
	
		
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