PID control with a lowpass filter to make the motor follow pot1

Dependencies:   HIDScope QEI mbed

Revision:
0:28db0afc950f
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/QEI.lib	Thu Sep 24 16:04:43 2015 +0000
@@ -0,0 +1,1 @@
+http://developer.mbed.org/users/aberk/code/QEI/#5c2ad81551aa