DIY circuit boards

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Bern
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DIY circuit boards

Post by Bern » Tue Nov 23, 2004 5:14 pm

Please bear with me, but after reading a lot on different board design software, and methods, I am still not sure what would be the best way for me to go. I want to be able to lay out small, single and double-sided boards. I want to be able to make my own boards for testing, or where one or two are needed, and also be able to order small numbers of production boards. Looking at some of the various free software, and places to order small quantities. At this time, I don’t see need for silk-screening, or solder mask. (Also what is the best method for making DIY boards?) What has worked best for you???? Thanks again!

Mike
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Re: DIY circuit boards

Post by Mike » Wed Nov 24, 2004 9:01 am

Double sided is VERY hard to do because it's hard to line both sides up.<p>To make my pcbs, I go to kinkos and buy some sheets of their glossy laser paper, they have two thicknesses, get the thinner one.<p>Then, print the image onto it with a laser printer (1200dpi being the best, don't go below 600dpi).<p>Next, heat the board with an iron on full heat for about 30 seconds, place the paper ink down, then iron it on for about a mintue and a half, then put it in warm water for about 10 minutes. I use my laundry sink, put a little hot water in it and let the paper soak.<p>Finally, take off the paper. Some will stick, which is OK. Just rub it off lightly with your finger.<p>You may have to do some touch-ups, with a sharpie-type marker. Sharpies dont work well though. I have good results with a maxell cd pen. If you could find them, they come in a pack of 4 colors, use the black one for touch ups.<p>Hope this helps!

paulrevelcet
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Re: DIY circuit boards

Post by paulrevelcet » Wed Nov 24, 2004 9:17 am

I agree with mike, I have tried different methods of making pcbs having best results with the laser printer method.

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haklesup
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Re: DIY circuit boards

Post by haklesup » Wed Nov 24, 2004 9:34 am

Best you can get from a fab on 2 layer would amount to about $75 for 5 boards shipping included delivered in about 2 weeks. This covers 2 layer standard process up to 20 square inches and it's not much more for 10 boards (sometimes the same).<p>Several fabs offer this similar low pricing on "Proto" work and all have soldermask and silkscreen included.<p>You just have to find the line where personal time and enjoyment turn into frustration and wasted materials. Then you'll know which boards to make yourself and which to let the pro's handle.<p>For larger boards with many layers, the key to getting a good price is in getting quotes from at least 4 vendors in different geographical areas and using that info to negotiate with your preferred vendor.

Mike
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Re: DIY circuit boards

Post by Mike » Wed Nov 24, 2004 2:20 pm

www.olimex.com has them for only $25 each.<p>But I don't think he wants that, he wants to make them himself :)

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jwax
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Re: DIY circuit boards

Post by jwax » Wed Nov 24, 2004 4:19 pm

Hint for frontside/backside alignment-
Put 3 circles near 3 of the 4 corners, for drill holes, on front and back of artwork. Once the holes are drilled, alignment front-back is easy.
;)
John

Bern
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Re: DIY circuit boards

Post by Bern » Thu Nov 25, 2004 6:54 pm

Thanks guys. I just went ahead and ordered Al Williams book. I hope it can lead me by the hand, and is worth the price.

howard123456
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Re: DIY circuit boards

Post by howard123456 » Mon Nov 29, 2004 3:31 pm

For home brew builders of pc (printed circuit board)projects, I offer to some one a service of laying out a board from schemitic. I limit this service based on size and time required.
[email protected]
Custom design UPS and Inverters, and Power Line conditioner and pc board layout

Mike
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Re: DIY circuit boards

Post by Mike » Mon Nov 29, 2004 3:43 pm

again, please stop spamming this forum.<p>And, he already has the PCB layout, he's just asking how to make the physical boards.

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jwax
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Re: DIY circuit boards

Post by jwax » Mon Nov 29, 2004 4:33 pm

[email protected], custon, whatever you call yourself:
Obvious you cannot write, but if you can have someone read this for you......LEAVE THIS FORUM.

Mike
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Re: DIY circuit boards

Post by Mike » Tue Nov 30, 2004 11:45 am

He is even posting on my bulletin board. There were 3 posts with the identical text as he wrote here.<p>There was one post in the how to section, one in the techinal suppotrt, and he hijacked a post of somebody asking how to download the eagle files.

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philba
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Re: DIY circuit boards

Post by philba » Tue Nov 30, 2004 10:16 pm

Double sided PCBs are quite easy to make via toner transfer. I do it all the time (ok,not all the time but I made like 50 in the last year). I don't bother with single sided any more because I like the other side to be a ground plane. You should start with single sided, though. <p>All you need is a laser printer (or photocopier), an iron, some coated paper (see the links) and etchant. Your first one will take some time but I've gotten it down to a couple hours start to finish. <p>The williams book is a good guide to eagle but doesn't really talk about home fabrication of PCBs.<p>Here are several links that will help you.
http://www.fullnet.com/u/tomg/gooteepc.htm
http://geocities.com/pdmtr/
http://www.pacificsun.ca/~robert/pcb/pcb.htm <p>The last one has lots of pictures and is the best (imo) but all three have something to add.<p>
There is a yahoo home brew PCB group worth checking out of you are serious about making your own. http://groups.yahoo.com/group/Homebrew_PCBs/<p>pm me if you have any questions.<p>[ November 30, 2004: Message edited by: philba ]</p>

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