motor tutorials (#895)

* updated pivots

* redirect support to forum

* adding top level FLL link

* updated wording

docs/tutorials/motors.md

@@ -9,6 +9,24 @@
   "cardType": "tutorial",
   "url":"/tutorials/run-motors",
   "imageUrl":"/static/tutorials/run-motors.png"
+}, {
+  "name": "Spin Turn",
+  "description": "Turn the driving base around its center.",
+  "cardType": "example",
+  "url":"/tutorials/spin-turn",
+  "imageUrl":"/static/tutorials/spin-turn.png"
+}, {
+  "name": "Pivot Turn",
+  "description": "Turn the driving base around a wheel.",
+  "cardType": "example",
+  "url":"/tutorials/pivot-turn",
+  "imageUrl":"/static/tutorials/pivot-turn.png"
+}, {
+  "name": "Smooth Turn",
+  "description": "Turn the driving base in a smooth motion.",
+  "cardType": "example",
+  "url":"/tutorials/smooth-turn",
+  "imageUrl":"/static/tutorials/smooth-turn.png"
 }, {
   "name": "Tank ZigZag",
   "description": "Use the tank block to keep motors in sync.",
@@ -21,3 +39,7 @@
 ## See Also
 
 [Run Motors](/tutorials/run-motors),
+[Spin Turn](/tutorials/spin-turn),
+[Pivot Turn](/tutorials/pivot-turn),
+[Smooth Turn](/tutorials/smooth-turn),
+[Tank ZigZag](/tutorials/tank-zigzag),

docs/tutorials/pivot-turn.md

@@ -0,0 +1,12 @@
+# Pivot Turn
+
+A **pivot turn** happens when a [EV3 Driving Base](https://le-www-live-s.legocdn.com/sc/media/lessons/mindstorms-ev3/building-instructions/ev3-rem-driving-base-79bebfc16bd491186ea9c9069842155e.pdf) turns around a wheel by spinning a single wheel.
+
+You can achieve turn with a ``tank`` or a ``steer`` block.
+
+```blocks
+forever(function() {
+    motors.largeBC.tank(50, 0, 2, MoveUnit.Rotations)
+    motors.largeBC.tank(0, 50, 2, MoveUnit.Rotations)
+})
+```

docs/tutorials/smooth-turn.md

@@ -0,0 +1,12 @@
+# Smooth Turn
+
+A **smooth turn** happens when a [EV3 Driving Base](https://le-www-live-s.legocdn.com/sc/media/lessons/mindstorms-ev3/building-instructions/ev3-rem-driving-base-79bebfc16bd491186ea9c9069842155e.pdf) turns around both wheels at a different speed.
+
+You can achieve turn with a ``tank`` or a ``steer`` block.
+
+```blocks
+forever(function() {
+    motors.largeBC.tank(50, 20, 2, MoveUnit.Rotations)
+    motors.largeBC.tank(20, 50, 2, MoveUnit.Rotations)
+})
+```

docs/tutorials/spin-turn.md

@@ -0,0 +1,12 @@
+# Spin Turn
+
+A **spin turn** happens when a [EV3 Driving Base](https://le-www-live-s.legocdn.com/sc/media/lessons/mindstorms-ev3/building-instructions/ev3-rem-driving-base-79bebfc16bd491186ea9c9069842155e.pdf) turns on the spot, by spinning both wheels in opposite directions.
+
+You can achieve turn with a ``tank`` or a ``steer`` block.
+
+```blocks
+forever(function() {
+    motors.largeBC.tank(50, -50, 2, MoveUnit.Rotations)
+    motors.largeBC.tank(-50, 50, 2, MoveUnit.Rotations)
+})
+```