diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 0674bcd..e1091a0 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -1,7 +1,7 @@
 name: Build Jekyll site
 on:
-  push:
-    branches: ["main"]
+  pull_request:
+    branches: main
 permissions:
   contents: read
   pages: write
diff --git a/blog/assets/img/old-backup/connected-roomba-demo.gif b/blog/assets/img/old-backup/connected-roomba-demo.gif
new file mode 100755
index 0000000..ed12ac4
Binary files /dev/null and b/blog/assets/img/old-backup/connected-roomba-demo.gif differ
diff --git a/blog/assets/img/old-backup/transition_one.gif b/blog/assets/img/old-backup/transition_one.gif
new file mode 100644
index 0000000..3b5c8f1
Binary files /dev/null and b/blog/assets/img/old-backup/transition_one.gif differ
diff --git a/blog/assets/img/old-backup/transition_two_speed.gif b/blog/assets/img/old-backup/transition_two_speed.gif
new file mode 100644
index 0000000..09ec40f
Binary files /dev/null and b/blog/assets/img/old-backup/transition_two_speed.gif differ