----- Original Message ----- From: "jrem" To: Sent: Sunday, May 29, 2005 11:08 AM Subject: [OT] Eagle board layout questions > I am looking for Eagle Light clues for the best way to layout a single > sided board with the minimum number of top side routings and vias. Are > there any hints as to board layout which can help me accomplish this? > I typically lay out the board then move stuff around, ripup, ratsnest, > and auto to try to minimize the top laer routings, but I never can seem > to get it optimized. > > Thanks, John. Some very GENERAL suggestions. Your milage may vary. 1) Don't bother with the auto router for a single layer board. Do you yourself. It is an OK autorouter but sometimes it just isn't worth fooling with. This sounds like one of those times. 2) Watch the rats nest when initially placing parts. Keep in mind that you can switch back to the schematic and swap gates and if necessary re-connect pins (ie exchange A for B on 2 input AND gate). 3) When routing, route power and ground first as these are going to be serpentine traces on single sided boards. Use wider than normal trace widths for power and ground. Item #2 is probably going to pay the biggest dividends. Rob -- http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist