Inchworm (#331)

* images for inchworm project

* binding pictures

* updated inchworm lesson

docs/projects/inchworm/chassis.md

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+# Chassis
+### @description Building the cardboard inchworm
+
+### ~avatar avatar
+
+Turn a piece of cardboard into an inchworm!
+
+### ~
+
+## Duration: ~45 minutes
+
+## Materials
+  * Cardboard
+  * Scissors or cutters
+  * glue gun or tape
+  * 1 paper clip
+
+## Step 1: cardboard
+
+Cutout a cardboard rectangle. You can use the @boardname@ as a ruler to figure out the size.
+
+![](/static/mb/projects/inchworm/chassis1.jpg)
+
+## Step 2: center fold
+
+Fold the cardboard in half over the short edge.
+
+![](/static/mb/projects/inchworm/chassis2.jpg)
+
+## Step 3: legs
+
+Fold each end so they rest flat on the ground.
+
+![](/static/mb/projects/inchworm/chassis3.jpg)
+
+## Step 4: front teeth
+
+Fold each corners on one end of the cardbard. This will be the front of the inchworm which is supposed to grip the ground.
+
+![](/static/mb/projects/inchworm/chassis4.jpg)
+
+## Step 5: back teeth
+
+Using a scissor or a cutter (watch the fingers!), cut out various strips in the other edge. Fold one after the other.
+
+![](/static/mb/projects/inchworm/chassis5.jpg)
+
+## Step 6: mounting the board
+
+Using tape or a glue gun, mount the @boardname@ on one side and the microservo on the cardobard.
+
+![](/static/mb/projects/inchworm/chassis6.jpg)
+
+## Step 7: mounting the servo
+
+Attach the servo on the **edge** of the other cardboard side.
+
+![](/static/mb/projects/inchworm/chassis7.jpg)
+
+## Step 8: Cable clean up (optional)
+
+Use tape to route the cables nicely on the inchworm.
+
+![](/static/mb/projects/inchworm/chassis8.jpg)
+
+## Step 9: attaching paper clip to servo
+
+Unfold a paper clip and attach it to the servo arm.
+
+![](/static/mb/projects/inchworm/clip2.jpg)
+
+## Step 10: attaching paper clip to cardboard
+
+Slide the folder paper clip into the cardboard, and use tape to secure it. 
+You might need to toy around with the size of the clip so that the servo rotation opens the inchworm sufficiently.
+
+![](/static/mb/projects/inchworm/clip3.jpg)
+
+
+## Step 11: it's ready!
+
+Your inchworm is ready!
+
+![](/static/mb/projects/inchworm/ready.jpg)
+
+### ~button /projects/inchworm/code
+NEXT: Code
+### ~