Inchworm (#331)

* images for inchworm project

* binding pictures

* updated inchworm lesson

docs/projects/inchworm/code.md

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+# Code
+### @description code to make the inchworm alive
+
+### ~avatar avatar
+
+Add code to make the inchworm move.
+
+### ~
+
+## Duration: ~15 minutes
+
+## Step 2: walk forever
+
+In order for the inchworm to move, the @boardname@ needs to command the servo to go between ``0`` and ``180`` degrees
+at a certain pace. In the code below, the user pressed button ``A`` to launch the inchworm.
+
+```blocks
+input.onButtonPressed(Button.A, () => {
+    pins.servoWritePin(AnalogPin.P0, 0)
+    basic.pause(500)
+    pins.servoWritePin(AnalogPin.P0, 180)
+    basic.pause(500)
+});
+
+### ~ hint
+
+You may have noticed that the inchworm can be rather slow or simply won't move. Try to improve the design of your legs, teeth
+so that the inchworm goes as fast as possible. Trying it on carpet also great helps avoiding skidding.
+
+### ~
+
+## Step 3: radio controlled inchworm
+
+You will need 2 @boardname@ for this part. By using the radio, we can make the inchworm controlled by another @boardname@.
+Download the code below to the @boardname@ on the inchworm and another "controller" @boardname@. Whenere A is pressed, the inchworm will move once.
+
+```blocks
+radio.onDataPacketReceived(({receivedNumber}) => {
+    pins.servoWritePin(AnalogPin.P0, 0)
+    basic.pause(500)
+    pins.servoWritePin(AnalogPin.P0, 180)
+    basic.pause(500)
+})
+input.onButtonPressed(Button.A, () => {
+    radio.sendNumber(0)
+})
+```