initial fork

examples/ProportionalControl/ProportionalControl.pde

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+// ProportionalControl.pde
+// -*- mode: C++ -*-
+//
+// Make a single stepper follow the analog value read from a pot or whatever
+// The stepper will move at a constant speed to each newly set posiiton, 
+// depending on the value of the pot.
+//
+// Copyright (C) 2012 Mike McCauley
+// $Id: ProportionalControl.pde,v 1.1 2011/01/05 01:51:01 mikem Exp mikem $
+
+#include <AccelStepper.h>
+
+// Define a stepper and the pins it will use
+AccelStepper stepper; // Defaults to AccelStepper::FULL4WIRE (4 pins) on 2, 3, 4, 5
+
+// This defines the analog input pin for reading the control voltage
+// Tested with a 10k linear pot between 5v and GND
+#define ANALOG_IN A0
+
+void setup()
+{  
+  stepper.setMaxSpeed(1000);
+}
+
+void loop()
+{
+  // Read new position
+  int analog_in = analogRead(ANALOG_IN);
+  stepper.moveTo(analog_in);
+  stepper.setSpeed(100);
+  stepper.runSpeedToPosition();
+}