Merge pull request #15 from hybridgroup/9-motor-driver

Adds motor driver example and led brightness.

examples/led_brightness.coffee

@@ -0,0 +1,20 @@
+Cylon = require('..')
+
+# Initialize the robot
+Cylon.robot
+  connection:
+    name: 'arduino', adaptor: 'firmata', port: '/dev/ttyACM0'
+
+  device:
+    name: 'led', driver: 'led', pin: 3
+
+  work: (my) ->
+    # we do our thing here
+    brightness = 0
+    fade = 5
+    every 0.05.seconds(), ->
+      brightness += fade
+      my.led.brightness(brightness)
+      fade = -fade if (brightness is 0) or (brightness is 255)
+
+.start()

examples/motor.coffee

@@ -0,0 +1,20 @@
+Cylon = require('..')
+
+# Initialize the robot
+Cylon.robot
+  connection:
+    name: 'arduino', adaptor: 'firmata', port: '/dev/ttyACM0'
+
+  device:
+    name: 'motor', driver: 'motor', pin: 3
+
+  work: (my) ->
+    speed = 0
+    increment = 5
+    every 0.05.seconds(), ->
+      speed += increment
+      my.motor.speed(speed)
+      console.log("current speed => #{ my.motor.currentSpeed() }")
+      increment = -increment if (speed is 0) or (speed is 255)
+
+.start()