add overview of arduino to deck section

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

diff --git a/curriculum/challenge-bot.scm b/curriculum/challenge-bot.scm
index bcfc7b209decdadf102035f23a835d9cd26c06cd..3aadc8d2596a71d744053faca63326131bd2f3ab 100644 (file)
--- a/curriculum/challenge-bot.scm
+++ b/curriculum/challenge-bot.scm
@@ -7,6 +7,7 @@
   :title [mechanical]
   (section
    :title [arduino to deck]
+   (p [let's attach the arduino to the deck.])
    (subsection
     :title [required materials]
     (p [you will need the things in this picture.
@@ -37,8 +38,10 @@
                   was bigger than the body and smaller than the thread.
                   we will choose the biggest drill bit that fits through
                   the hole on the arduino.])
-     (p [here's a diagram of a screw]
-        (figure :legend "screw" (image :file "arduino-to-deck/screw.png"))))
+     (p [here's a cross section of a screw in the deck]
+        (figure :legend "screw cross section"
+                (image :file
+                       "arduino-to-deck/screw-cross-section.png"))))
     (subsubsection
      :title [inserting drill bit]
      (p (figure :legend "arduino to deck / insert bit"
@@ -54,7 +57,10 @@
                make sure that the teeth end up gripping the flat part of
                the drill bit.]))
     (subsubsection
-     :title [holding drill])
+     :title [holding drill]
+     (p [hold the drill with one hand on the handle and trigger.
+              put the other hand on the orange nozzle, before the
+              black spinning part.]))
     (subsubsection
      :title [arduino placement]
      (p [the arduino should be placed as shown in this picture.]
@@ -82,7 +88,10 @@
      (p [the "#6" part of "#6-32x3/8\"" is how big around the bolt is.
              it is related to wire gauge.
              bigger numbers mean larger screw.
-             smaller numbers means smaller screws.])
+             smaller numbers means smaller screws.]
+        (figure :legend "arduino to deck / #6-32 screw"
+                (image :file
+                       "arduino-to-deck/6-32-screw.png")))
      (p [check
          ,(itemize
            (item