Start on the big motor controller boards

Change-Id: Ia9fc9158a861be664bf77cf3309860af75b18ff8
diff --git a/motors/big_schematic/control-main.sch b/motors/big_schematic/control-main.sch
new file mode 100644
index 0000000..9de88d3
--- /dev/null
+++ b/motors/big_schematic/control-main.sch
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+v 20130925 2