I am laying out a new sheild, and have everything done in eagle. I have a few SMD parts and eagle does not seem to want to auto route to them. If I change the packages to dip's every thing works great. I have googled around and can not find the answer to this. Anyone have any suggestions.
Thanks,
Dale
Have you got Eagle set to route both top and bottom layers? If one of them is set to "N/A" it woun't route on that layer, which would explain why it would be not working for you for SMD layer, but when you change them to DIP, and therefore the layer, it does work.
In the "autorouter setup" tab, change the routing grid from the default (0.05 inch) to something at least as small as the minimum pitch on your SMT packages. (0.01 inch is probably good.)
Also check the design rules and make sure they aren't set such that "legally" routing to the SMT pins is impossible (if you have a package with pins on 0.4mm centers, placing 0.2mm traces at least 0.2mm apart is a challenge...)
Changing the autorouter from the default of 50 to 20 did the trick. Thanks for everyones help.
Dale