add subsections to left sonar

diff --git a/curriculum/challenge-bot.scm b/curriculum/challenge-bot.scm
index 007918c329cce1ad8eaf2bd78b7aeecc9abb965b..6a3cf5132aa5f84ab97d59cbe9c78a8b9c1c08c0 100644 (file)
--- a/curriculum/challenge-bot.scm
+++ b/curriculum/challenge-bot.scm
@@ -62,7 +62,13 @@
    (subsection
     :title [arduino reset button]))
   (section
-   :title [left sonar])
+   :title [left sonar]
+   (subsection
+    :title [breadboard connectivity])
+   (subsection
+    :title [cable])
+   (subsection
+    :title [arduino headers]))
   (section
    :title [both sonars])
   (section