add untethered section's subsections

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

diff --git a/curriculum/challenge-bot.scm b/curriculum/challenge-bot.scm
index 89177b4f8d3fed4b511261cb0daa7eb467aefb2e..8a8ed267a45da480b01f002f47f3867b65229687 100644 (file)
--- a/curriculum/challenge-bot.scm
+++ b/curriculum/challenge-bot.scm
@@ -87,7 +87,11 @@
    (subsection
     :title [analogWrite]))
   (section
-   :title [untethered])
+   :title [untethered]
+   (subsection
+    :title [arduino battery])
+   (subsection
+    :title [off and on functions]))
   (section
    :title [follow])
   (section