rename "milk-jar-robot" to "milk carton robot"

docs/projects/milk-carton-robot/code.md

@@ -0,0 +1,73 @@
+# Code
+### @description code to make the Milk Carton Robot alive
+
+### ~avatar avatar
+
+Add code to make the Milk Carton Robot move.
+
+### ~
+
+## Duration: ~15 minutes
+
+## Step 1: wire up the servo
+
+Follow the instructions in [servo 101 manual](/device/servo) to connect the servo to the @boardname@.
+
+https://youtu.be/m-HS8OyS0pw
+
+## Step 2: code light sensor
+
+Code the lightsensor on the @boardname@ to control the servo.
+
+```blocks
+basic.forever(() => {
+    led.plotBarGraph(
+        input.lightLevel(),
+        0
+    )
+    pins.servoWritePin(AnalogPin.P0, input.lightLevel())
+})
+```
+
+https://youtu.be/Ah4fEbJtklU
+
+It works but your servo might be trying to move too much. Let's calibrate it.
+
+## Step 3: calibrate the servo
+
+Download the [servo calibration program](/examples/servo-calibrator) to determine 
+to opening and closing angles of the servo for your robot.
+
+https://youtu.be/lZxWC82HDn0
+
+We are going to map the light level range, ``[0, 255]`` to the
+angle range, ``[closed, opened]`` using ``pins.map``.
+
+```blocks
+let angle = 0
+let closed = 0
+let opened = 0
+basic.forever(() => {
+    led.plotBarGraph(
+        input.lightLevel(),
+        0
+    )
+    angle = pins.map(
+        input.lightLevel(),
+        0,
+        255,
+        opened,
+        closed
+    )
+    pins.servoWritePin(AnalogPin.P0, angle)
+})
+// TODO: use the angle found at calibration!
+opened = 95
+// TODO: use the angle found at calibration!
+closed = 175
+```
+
+
+### ~button /projects/milk-jar-robot/connect
+NEXT: Connect
+### ~