add screw diagram

[challenge-bot] / curriculum / challenge-bot.scm

diff --git a/curriculum/challenge-bot.scm b/curriculum/challenge-bot.scm
index 20093e1fb826a3eb0fe35df7d49260b793967ed5..eda101bfa79a10125117c744bfbe9774bc2cd516 100644 (file)
--- a/curriculum/challenge-bot.scm
+++ b/curriculum/challenge-bot.scm
@@ -7,10 +7,34 @@
   :title [mechanical]
   (section
    :title [arduino to deck]
+   (subsection
+    :title [required materials]
+    (p [you will need the things in this picture.
+            ,(figure :legend "arduino to deck / required materials"
+                     (image :file "arduino-to-deck/0-required-materials.png"))
+            ,(itemize
+              (item [medical kit with bandages])
+              (item [safety goggles])
+              (item [drill bit \(we will determine size in a moment\)])
+              (item [drill])
+              (item [alan wrench])
+              (item [wood block])
+              (item [arduino])
+              (item [#6-32x3/8\", four of them]))]))
    (subsection
     :title [first hole]
     (subsubsection
-     :title [choosing drill bit])
+     :title [choosing drill bit]
+     (p [choosing the right drill bit depends on what job you are doing.
+                  right now, we are making holes for screws to hold the
+                  arduino to the deck.
+                  this means the hole needs to be big enough for the
+                  screw body to fit through.
+                  we want the screw to stay put once it's in place.
+                  the threads of the screw will grip the edges of the
+                  hole it's going through.])
+     (p [here's a diagram of a screw]
+        (figure :legend "screw" (image :file "arduino-to-deck/screw.png"))))
     (subsubsection
      :title [inserting drill bit])
     (subsubsection
@@ -18,10 +42,21 @@
     (subsubsection
      :title [arduino placement]
      (p [the arduino should be placed as shown in this picture.]
-        (figure :legend "arduino placement on deck"
+        (figure :legend "arduino to deck / place arduino"
                 (image :file "arduino-to-deck/3-place-arduino.png"))
-        [the top edge of the arduino should line up with the underside
-             of the holes ]))
+        [here's a closeup]
+        (figure :legend "arduino to deck / place arduino closeup"
+                (image :file
+                       "arduino-to-deck/4-place-arduino-closeup.png"))
+        [the picture above shows where to place the arduino on the deck.
+             the arduino should line up with the holes on the deck.
+             this alignment line is highlighted in pink.
+             on the arduino, there's a hole on the top left, between the
+             orange reset button and black headers.
+             the green circle shows where the hole is.
+             the blue box encloses the arduino hole and two deck holes.
+             place the arduino hole mid-way between the two
+             deck holes.]))
     (subsubsection
      :title [drilling]))
    (subsection