Milk Jar Robot (#377)

* first draft

* fixed code section

* calibration

* fix broken link

docs/projects/milk-jar-robot.md

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+
+# Milk Jar Robot
+
+### @description A half gallon milk jar robot
+
+### ~avatar avatar
+
+Make a funny Milk Jar robot!
+
+### ~
+
+https://youtu.be/Ah4fEbJtklU
+
+## Duration
+
+3 Activities, approx 30-45 min each based on familiarity with the coding concepts
+
+## Materials
+
+### Recycled
+
+* 1 Milk Carton **without a screwable cap**
+* 2 Coffee stiring wood sticks
+* 2 Straws
+
+### Electronics
+
+* 1 @boardname@, battery holder and 2 AAA batteries
+* 3 Crocodile clips
+* 1 micro servo 9g SG90
+
+### Tools
+* Scissors that can cut cardboard
+* Hol puncher (scissors will work too)
+* Glue gun
+
+![Materials](/static/mb/projects/milk-jar-robot/materials.jpg)
+
+## Preparation
+
+* [Equip the microservo with crocodile clips](/device/servo)
+
+## Activities
+
+* [Make](/projects/milk-jar-robot/make)  
+* [Code](/projects/milk-jar-robot/code)  
+* [Connect](/projects/milk-jar-robot/connect)  
+
+### ~button /projects/milk-jar-robot/make
+
+Let's get started!
+
+### ~