diff --git a/.gitignore b/.gitignore
index 7bd4d5d..c83f575 100644
--- a/.gitignore
+++ b/.gitignore
@@ -5,8 +5,8 @@
 *.fls
 
 # PDF output - usually a bad idea to keep this in Git
-*.pdf
-!data/**/*.pdf
+thesis.pdf
+datasheets/
 
 # Latexmk
 *.fdb_latexmk
diff --git a/tikz/gen18v.pdf b/tikz/gen18v.pdf
new file mode 100644
index 0000000..95f5b6c
Binary files /dev/null and b/tikz/gen18v.pdf differ
diff --git a/tikz/mon48i.pdf b/tikz/mon48i.pdf
new file mode 100644
index 0000000..a3b1fac
Binary files /dev/null and b/tikz/mon48i.pdf differ
diff --git a/tikz/mon48v.pdf b/tikz/mon48v.pdf
new file mode 100644
index 0000000..ecac674
Binary files /dev/null and b/tikz/mon48v.pdf differ