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> Projects and Ideas > For Engineering Enthusiasts|How to make a PCB |
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typedef
This is so cool, I want to do this before I die.
http://www.riccibitti.com/pcb/pcb.htm http://myweb.cableone.net/wheedal/pcb.htm Tools: http://www.expresspcb.com/ |
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21 Apr 2011, 05:42 |
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Artlav
Without special materials? What do you call all this stuff then?
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21 Apr 2011, 15:02 |
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roboman
You could go real old school and draw the traces with a pen
 The last couple of pcb's I did with a cnc mill, just cut off the copper that you don't want.... |
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22 Apr 2011, 01:16 |
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typedef
roboman wrote: You could go real old school and draw the traces with a pen Can I see you guys' pictures of your PCBs, if you still have them.  |
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22 Apr 2011, 01:19 |
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roboman
I'm not sure I still had any hand drawn stuff. Been doing a major clean out of old junk and last week end nearly all my old electronics stuff went to e-waste or the free section of crags list. They looked like a 5 year old's line drawings. The milled out stuff, check out http://www.pcbgcode.org/
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22 Apr 2011, 13:27 |
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JohnFound
typedef wrote: Can I see you guys' pictures of your PCBs, if you still have them. Here is one, made in 1996 by drawing the tracks with home made ink (bitumen solved in turpentine), home made pen (from insulin syringe needle cut to 5 mm) and etched in hydrochloric acid and hydrogen peroxide solution. It is fast ADC module, with it's own memory buffer (256kx12bit DRAM).
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22 Apr 2011, 14:14 |
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Artlav
For quick prototyping i prefer simple 3D soldering - no fussing, no layouting.
For something more permanent dot boards are quite good, and more dense than free hanging: 
Why go all the trouble making a PCB for a simple circuit, no idea. And i never made anything complex enough to warrant one. |
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22 Apr 2011, 15:42 |
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typedef
wow those are really cool.
i just need to learn how to map the modules. does yours have a clock chip? and @JohnFound how did you make your own memory buffer? Last edited by typedef on 18 Jun 2011, 02:07; edited 1 time in total |
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22 Apr 2011, 22:34 |
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JohnFound
typedef wrote: and @JohnFound if i how did you make your own memory buffer? Using 12 DRAM chips of course - 41256 if I remember correctly. It is the cube in the center. |
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23 Apr 2011, 06:12 |
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Madis731
@Artlav: Your 3D soldering is scary
but I guess its effective |
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25 Apr 2011, 13:52 |
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bitRAKE
I haven't tried it, but I guess SMD parts could also me soldered together in a lump (ie without board). I've build a circuit on a copper penny (heatsink, lol).
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26 Apr 2011, 01:40 |
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Octavio
revolution wrote:
I think you are using the wrong type of flux.A flux made with a alcohol + rosin no needs to be cleaned and also protects the circuit. For making pcbs i like more to use a photosensible board it is not more difficult but is more precise and accurate,in the photo (usb audio device) some wires are 0.2mm with 0.2mm spacing .
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17 Jun 2011, 10:59 |
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Enko
the little square resistors are better soldered using a hot air gun. You just put some soldering paste on the board, hot air... 2-3 min and they soldered. And it can be done soldering a bunch together.
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17 Jun 2011, 13:16 |
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revolution
Rollerball-pen ink to draw circuits on ordinary paper
Although they don't say how successful it is (or not) soldering the components with a paper substrate. |
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28 Jun 2011, 16:40 |
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Artlav
What about homemade lithography?
http://colossus.cs.rpi.edu/~azonenberg/papers/litho1.pdf 
15um for sure, 2um potentiallly. Could be fun. |
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28 Jun 2011, 17:05 |
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