On Sat, 23 Oct 2010 17:33:02 +0100, you wrote: >Hi, > >I have had some moderate success designing PCBs in Eagle and having them=20 >made by BatchPCB. I currently use a fairly crude method of soldering=20 >SMD parts, but it seems to work (info at http://tinyurl.com/2brjyn6).=20 >I'm pretty happy with this workflow. > >However, the skills I built up manually routing double sided=20 >through-hole boards with "huge" components don't translate well to=20 >surface mount. > >As an example, see the board at http://tinyurl.com/35gdrpx (none of the=20 >finishing e.g. silkscreen/ground pours is done yet). It is a simple=20 >breakout for the FT232RL so I can use it with a breadboard, but getting=20 >all the wires routed without hundreds of vias is challenging me. > >So I would welcome any tips for SMD boards. Do people use the=20 >auto-router?=20 NO! NO! NO! Don't even think about it! > Would it be more sensible to layout on 2 sides somehow=20 >(e.g. Vcc/GND on one, signal on the other).=20 Yes - normally you'd put a groundplane on the bottom and do as much routin= g as possible on top, using the bottom for occasional jumpers to preserve the connectivity of th= e groundplane. Ground is usually the place that the largest number of connections go to, = so putting it on a plane instantly means you can pretty much forget about all of these connections.= =20 > Do I just need lots more=20 >practise at component layout and routing? Yes. practice is the only way to get better - It can't be taught - you will= develop a feel for what will work. =20 The main thing to remember is that placement is everything - time spent= getting the placement right is saved many times over when routing. And don't be afraid to rip-u= p... Also, take a hard look at existing boards to see how other people have done= it. You can learn from both good and bad examples! --=20 http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist .