FPGA Central

A picture says more then words but having something on your hands is even
better.
I found lately that an German company is manufacturing small FPGA and PLD
boards
with an DIP24 (GAL like) socket header. They looked nice but when actually
having
them in my hands, well I instantly wanted to check something out.
And I did, and I liked the easyness and fun I had, here is the story

http://xilant.com/content/view/33/55/

full project (from schematic design to working proto!) was done within 6
hours.

those tiny modules are made by OHO

http://www.oho-elektronik.de/

Ohooo!

--
Antti Lukats,
who hopes others will have fun too

http://www.xilant.com


PS if somebody wonders why I am not having some rest -
well I am locked in into the office as I left my keys at home.
Waiting for the children to fall a-sleep so my wife can sneak
out to a rescue mission.

"Antti Lukats" <[email protected]> wrote in message news:dp40cs$65f$02$[email protected]..
> They looked nice but when actually having
> them in my hands, well I instantly wanted to check something out.
> And I did, and I liked the easyness and fun I had, here is the story
>
> http://xilant.com/content/view/33/55/


That's an interesting read Antti, a couple of questions....

"Cutting out some pages from an stupid catalog (the normal office paper is
no good). Replacing the paper in Laser printer with the catalog paper."


I presume here that you're trying to use glossy paper so when you
reverse it and iron it onto the copper clad board what's printed will
transfer better than with normal paper? I also presume that you
run it through a laser printer?

Any tips on the best sort of paper to use? What about glossy photo paper?


"Now taking 100ml water and a little from that fine-acid thing."

What do you mean by 'that fine-acid thing'?

This sounds like a useful technique, recently there have been a couple
of occaisions when I would have like to have been able to knock together
a _really_ simple PCB to help with some proto-typing/testing.


Nial.

Yahoo group for making PCBs:

http://groups.yahoo.com/group/Homebrew_PCBs/

Leon

"Nial Stewart" <[email protected]> schrieb im Newsbeitrag
news:43b84d3c$0$29577$[email protected]..
>
> "Antti Lukats" <[email protected]> wrote in message
> news:dp40cs$65f$02$[email protected]..
>> They looked nice but when actually having
>> them in my hands, well I instantly wanted to check something out.
>> And I did, and I liked the easyness and fun I had, here is the story
>>
>> http://xilant.com/content/view/33/55/
>
>
> That's an interesting read Antti, a couple of questions....
>
> "Cutting out some pages from an stupid catalog (the normal office paper is
> no good). Replacing the paper in Laser printer with the catalog paper."
>
>
> I presume here that you're trying to use glossy paper so when you
> reverse it and iron it onto the copper clad board what's printed will
> transfer better than with normal paper? I also presume that you
> run it through a laser printer?
>
> Any tips on the best sort of paper to use? What about glossy photo paper?
>
>
> "Now taking 100ml water and a little from that fine-acid thing."
>
> What do you mean by 'that fine-acid thing'?
>
> This sounds like a useful technique, recently there have been a couple
> of occaisions when I would have like to have been able to knock together
> a _really_ simple PCB to help with some proto-typing/testing.
>
>
> Nial.
>

Hi Nial

I found this 'direct toner' method from 'platinen' forum at german site
http://www.mikrokontroller.net

there was reference to a real great manual (unfortnatly in german)

http://thomaspfeifer.net/
go 'trickkiste' thee is picture and long story with many pictures

some english links can be found
google PCB DIY toner

http://www.michaeladams.org/?Electronics:PCBs

have fun!

this was my first testing with that method and really worked

I spent at www.conrad.de

2 EUR for the fine aetz kristall (for acid making)
3 EUR for 20 bx 30 cm PCB
2 for plastik thing where to put the acid in

thats it. I have almost all the PCB and acid overleft so can make more
boards within a few hours from idea to ready board

Antti
PS I will post the picture of my first board to my website as soon as get
shot

"Nial Stewart" <[email protected]> schrieb im Newsbeitrag
news:43b84d3c$0$29577$[email protected]..
>
> "Antti Lukats" <[email protected]> wrote in message
> news:dp40cs$65f$02$[email protected]..
>> They looked nice but when actually having
>> them in my hands, well I instantly wanted to check something out.
>> And I did, and I liked the easyness and fun I had, here is the story
>>
>> http://xilant.com/content/view/33/55/
>
>
> That's an interesting read Antti, a couple of questions....
>
> "Cutting out some pages from an stupid catalog (the normal office paper is
> no good). Replacing the paper in Laser printer with the catalog paper."
>

I added as promised the pictures of the PCB made with that catalog paper
trick

it really does work, only need to iron pretty well, I wanted it all to be
done very
quickly so I did rush a little and did not get the maximu possible quality.
One
geman guy is able to make track-clearance as small as 3 mil using that
technology

have fun
Antti