Re:Raspberry Pi reveals the final PCB design for the $25 PC
by easp on Tuesday November 15, 2011 @06:35PM
(#3240900)
Yup, it was interesting reading some of the discussions about the design of the device. PCB cost was a major consideration. They aren't exposing some of the I/O pins on the SoC because it would require a more expensive PCB to do so.
Amortising the tooling / artwork costs into big volumes helps, but even then the PCB is usually one of the more expensive items on the parts list.