edits

UrumbotXY-Fall2022/README.md

@@ -83,8 +83,8 @@ Note how the string is inserted on the capstans. The string can be attached to t
 
 <img src=img/capstan.jpg width=100%><br>
 
-
-
+### Add pen actuator.
+<img src=img/pen.jpg width=300>
 
 
 ## Pen plotter