Easy and fun: Worlds smallest FPGA module.

Dec 30, 2005 4 Replies
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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



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



those tiny modules are made by OHO



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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.
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N

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.

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A

"Nial Stewart" schrieb im Newsbeitrag news:43b84d3c$0$29577$ snipped-for-privacy@news.zen.co.uk...

Hi Nial

I found this 'direct toner' method from 'platinen' forum at german site

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

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go 'trickkiste' thee is picture and long story with many pictures

some english links can be found google PCB DIY toner

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have fun!

this was my first testing with that method and really worked

I spent at

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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

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"Nial Stewart" schrieb im Newsbeitrag news:43b84d3c$0$29577$ snipped-for-privacy@news.zen.co.uk...

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

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