Henrik Forstén built a board with an Atmel ARM processor in 217-ball BGA package using OSH Park and OSH Stencil:
I wanted to try designing a board with BGA chips in it to see how hard soldering them could be. So I decided to design a small ARM embedded system that can run Linux. ARM processor that I decided to use was AT91SAM9N12 in a 217 ball LFBGA package, just because it was the cheapest ARM processor with memory management unit which is required to run Linux.
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