--- In
Homebrew_PCBs@yahoogroups.com, "crankorgan" <john@k...> wrote:
>
> Phil,
> What I ment was he may work on circuits that don't require a
> certain type component layout. I have trouble shot micro circuits
> where traces ran all over the board in order to get to their
> destination. By using manual routing and a few jumpers, alot of
> circuits can be done with a single sided board. Unless you know Eagle
> very well it will produce a double sided board. Some people "Get to
> the Getten" (American Chopper) instead of thinking things out like you
> or me. I try for a single sided board with no ground loops. Explaining
> manual routing to people who don't understand how circuits work would
> require more work. Most people just enter in the schematic and accept
> the board they get. I have seen tons of circuits on the Internet. Most
> are missing the standard .1uf DeGlitching caps.
>
> John
OK. It is unfortunate that people skimp on bypass caps but that seems
independent to routing. I suspect an autorouted board can have just
as many problems as a hand routed one. Maybe more so since there is
no smarts about keeping classes of traces seperated.
I'm not sure at all that describing manual routing is that hard.
Williams does talk about how to get eagle to route single sided boards
(enter NA for top side routing direction in the autorouter dialog).
He also talks about giving a very high cost to top side routing to get
just a few top-side traces and using jumpers instead of traces -
something that I have done on occasion before I found out how easy
double sided boards are to make.