explain where first arduino hole should be drilled

diff --git a/curriculum/challenge-bot.scm b/curriculum/challenge-bot.scm
index 6e9f79319582e467efc88049cf0dc4e6795ae3ed..63aa0d0cd2d6d5dcb5d3c1642e47bc3d735c551c 100644 (file)
--- a/curriculum/challenge-bot.scm
+++ b/curriculum/challenge-bot.scm
@@ -35,7 +35,12 @@
         (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 ]))
+             of the holes closest to the edge of the deck.
+             on the arduino, there's a hole on the top left.
+             that hole should be mid-way between two of the holes in the
+             grid of holes on the deck.
+             put the arduino hole between the third and fourth holes
+             from the left side of the deck.]))
     (subsubsection
      :title [drilling]))
    (subsection