RC car lesson (#519)

* initial drop

* fixing summary

* adding images

* Adding basic connect code

* connect section

* moving video

* adding ignores

docs/projects/rc-car/code.md

@@ -0,0 +1,72 @@
+# Code
+
+## Step 1: Add the Kitronik package
+
+Kitronik published a set of blocks to use their motor driver. We need to add it to our project.
+
+* Click on **Advanced**
+* Click **Add Package**
+* Type ``kitronik``, press **Enter**
+* Select the **kitronik-motor-driver** package
+
+After the package gets loaded, you should see a new **Kitronik" category in the toolbox.
+
+## Step 2: Round and round we go!
+
+https://youtu.be/pD6tM1nXCPA
+
+The first program will have the car drive in a circle for 5 seconds when the user presses button ``A``. 
+This is simply done by turning both motor controllers on for 5 seconds.
+
+```blocks-ignore
+input.onButtonPressed(Button.A, () => {
+    basic.showIcon(IconNames.Happy)
+    kitronik.motorOn(kitronik.Motors.Motor1, kitronik.MotorDirection.Reverse, 100)
+    kitronik.motorOn(kitronik.Motors.Motor2, kitronik.MotorDirection.Forward, 100)
+    basic.pause(5000)
+    kitronik.motorOff(kitronik.Motors.Motor1)
+    kitronik.motorOff(kitronik.Motors.Motor2)
+    basic.showIcon(IconNames.SmallDiamond)
+})
+```
+
+### ~ hint
+
+Make sure to unplug the @boardname@ from the Edge connector while your are connecting it to your computer to avoid any kind of electrical problem.
+
+### ~
+
+Depending on how you've connected your cables to the motor driver, your car may be going backward instead of forward. 
+You can either swap the cables or change your code to account for that.
+
+## Step 3: Figure Eight
+
+https://youtu.be/agor9wtiAkE
+
+Instead of stopping after 5 seconds, we reverse the steering motor to turn the other direction. This will create a figure eight trajectory.
+
+```blocks-ignore
+input.onButtonPressed(Button.A, () => {
+    basic.showIcon(IconNames.Happy)
+    kitronik.motorOn(kitronik.Motors.Motor1, kitronik.MotorDirection.Reverse, 100)
+    kitronik.motorOn(kitronik.Motors.Motor2, kitronik.MotorDirection.Forward, 100)
+    basic.pause(3500)
+    kitronik.motorOn(kitronik.Motors.Motor2, kitronik.MotorDirection.Reverse, 100)
+    basic.pause(3500)
+    kitronik.motorOff(kitronik.Motors.Motor1)
+    kitronik.motorOff(kitronik.Motors.Motor2)
+    basic.showIcon(IconNames.SmallDiamond)
+})
+```
+
+Great! It's now time to use another @boardname@ to remove control the car.
+
+### ~button /projects/rc-car/connect
+
+Connect
+
+### ~
+
+```package
+pxt-kitronik-motor-driver=github:kitronikltd/pxt-kitronik-motor-driver#v0.0.3
+```