Added capacitors for IO-expander.

See
 - https://github.com/blemasle/arduino-mcp23017/blob/6196c96805f504707e6d23b12a5021a0f73a350e/examples/PortCopyOnInterrupt/PortCopyOnInterrupt.ino#L6
 - https://github.com/davetcc/IoAbstraction/blob/2a8fd3fcbfbfd5c44d882bb14c6715a306103558/examples/ledsOnMCP23017/mcp23017-schematic.png

Author: dhebbeker

hardware/robot-control-circuit/robot-control-circuit-cache.lib

@@ -256,6 +256,44 @@ X Pin_9 9 -200 -200 150 R 50 50 1 1 P
 ENDDRAW
 ENDDEF
 #
+# Device_C
+#
+DEF Device_C C 0 10 N Y 1 F N
+F0 "C" 25 100 50 H V L CNN
+F1 "Device_C" 25 -100 50 H V L CNN
+F2 "" 38 -150 50 H I C CNN
+F3 "" 0 0 50 H I C CNN
+$FPLIST
+ C_*
+$ENDFPLIST
+DRAW
+P 2 0 1 20 -80 -30 80 -30 N
+P 2 0 1 20 -80 30 80 30 N
+X ~ 1 0 150 110 D 50 50 1 1 P
+X ~ 2 0 -150 110 U 50 50 1 1 P
+ENDDRAW
+ENDDEF
+#
+# Device_CP
+#
+DEF Device_CP C 0 10 N Y 1 F N
+F0 "C" 25 100 50 H V L CNN
+F1 "Device_CP" 25 -100 50 H V L CNN
+F2 "" 38 -150 50 H I C CNN
+F3 "" 0 0 50 H I C CNN
+$FPLIST
+ CP_*
+$ENDFPLIST
+DRAW
+S -90 20 90 40 0 1 0 N
+S 90 -20 -90 -40 0 1 0 F
+P 2 0 1 0 -70 90 -30 90 N
+P 2 0 1 0 -50 110 -50 70 N
+X ~ 1 0 150 110 D 50 50 1 1 P
+X ~ 2 0 -150 110 U 50 50 1 1 P
+ENDDRAW
+ENDDEF
+#
 # Device_LED
 #
 DEF Device_LED D 0 40 N N 1 F N